Skocz do pozycji: 1.

Tytuł:

Dinosaur footprints from the Upper Cretaceous of Mongolia

Autorzy:

Ishigaki, S.
Watabe, M.
Tsogtbaatar, Kh.
Saneyoshi, M.

Powiązania:

https://bibliotekanauki.pl/articles/2059256.pdf

Data publikacji:

2009

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Mongolia
Gobi Desert
Upper Cretaceous
dinosaur
footprint

Opis:

We report new data on 18 dinosaur footprint localities discovered in the Upper Cretaceous of the Gobi Desert of Mongolia, where we have recognized more than 20 000 footprints of dinosaurs. There are at least four types of dinosaur footprints, attributed to theropod, ornithopod, ankylosaurid and sauropod trackmakers. We have also recognized abun dant footprints of un identified trackmakers from each locality. Co existence of footprints and many skeletal remains in the same and/or nearby beds is a remarkable feature of these Mongolian sites. Analyses of dinosaur footprints and associated body fossil remains for each locality reveal that even in the same beds, the ichnofauna differ from the fauna reconstructed on the basis of body fossils of dinosaurs. The results demonstrate that dinosaur faunal assem blages reconstructed from body fossil or footprint evidence solely should be considered very carefully.

Źródło:

Geological Quarterly; 2009, 53, 4; 449-460
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:

A new dragonfly family from the Upper Cretaceous of France

Autorzy:

Nel, A
Neraudeau, D.
Perrichot, V.
Girard, V.
Gomez, B.

Powiązania:

https://bibliotekanauki.pl/articles/21057.pdf

Data publikacji:

2008

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

new species
Cretaceous
dragonfly
paleontology
Enigmaeshna deprei
France
fossil insect
Upper Cretaceous

Opis:

The new aeshnopteran family Enigmaeshnidae is proposed for Enigmaeshna deprei gen. et sp. nov., the first fossil insect collected as imprint in the Earliest Cenomanian clay of the Puy−Puy quarry at Tonnay−Charente (Charente−Maritime, SW France). The bed bearing E. deprei was previously known for its highly diversified fossil plant assemblage. Although this taxon belongs to the much derived clade Aeshnodea, it is characterized by several unique hind wing venation characters, never found in other Aeshnoptera, viz. part of MAb distal of the trigonal planate very long, and presence of five posterior branches of AA directed towards posterior wing margin.

Źródło:

Acta Palaeontologica Polonica; 2008, 53, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:

New specimens of albanerpetontid amphibians from the Upper Cretaceous of Uzbekistan

Autorzy:

Skutschas, P.P.

Powiązania:

https://bibliotekanauki.pl/articles/22623.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Uzbekistan
paleontology
Cretaceous
Upper Cretaceous
amphibian
albanerpetontid amphibian
new specimen
fossil
Albanerpeton
Asia

Opis:

The albanerpetontid fossil record in Asia was limited to five dentaries of unidentified genus from the Upper Cretaceous Khodzhakul (lower Cenomanian) and Bissekty (Turonian) formations, Kyzylkum Desert, Uzbekistan. Here I describe two fragmentary frontals from the Khodzhakul local fauna as the first unequivocal record of the genusAlbanerpeton in Asia.

Źródło:

Acta Palaeontologica Polonica; 2007, 52, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:

The first discovery of pterosaurs from the Upper Cretaceous of Mongolia

Autorzy:

Watabe, M
Tsuihiji, T.
Suzuki, S.
Tsogtbaatar, K.

Powiązania:

https://bibliotekanauki.pl/articles/20444.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

paleontology
pterosaur
Upper Cretaceous
Cretaceous
Mongolia
azhdarchid pterosaur
Bayshin Tsav
Burkhant
Gobi Desert
remains
Pteranodon
Anhanguera
Pterosauria
Azhdarchidae

Opis:

Cervical vertebrae of azhdarchid pterosaurs were discovered in two Upper Cretaceous (Baynshire Suite) dinosaur localities, Bayshin Tsav and Burkhant, in the Gobi Desert. These are the first discoveries of pterosaur remains in the Upper Cretaceous of Mongolia. The Burkhant specimen includes a nearly complete atlas−axis complex, which has rarely been described in this clade of pterosaurs. Although all elements comprising this complex are fused together, a wing−like atlas neural arch is still discernable. The postzygapophyseal facet of the axis is long anteroposteriorly and convex dorsally, and would likely have allowed a fairly large range of dorsoventral flexion at the axis−third cervical joint unlike in other well−known ornithocheiroids such as Pteranodon and Anhanguera. Both Mongolian localities represent inland, terrestrial environments, which were apparently not typical habitats of pterosaurs, thus adding further evidence for the ubiquity of Azhdarchidae during the Late Cretaceous.

Źródło:

Acta Palaeontologica Polonica; 2009, 54, 2; 231-242
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:

Evidence of a new carcharodontosaurid from the Upper Cretaceous of Morocco

Autorzy:

Cau, A.
Dalla Vecchia, F.M.
Fabbri, M.

Powiązania:

https://bibliotekanauki.pl/articles/21129.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

theropod
evidence
new carcharodontosaurid
carcharodontosaurid
Upper Cretaceous
Cretaceous
Morocco
fossil
paleontology
Carcharodontosaurus
Deltadromeus
Spinosaurus
African theropod

Opis:

We report an isolated frontal of a large−bodied theropod from the Cenomanian “Kem Kem beds” of Morocco with an unusual morphology that we refer to a new carcharodontosaurid distinct from the sympatric Carcharodontosaurus. The specimen shows an unique combination of plesiomorphic and potentially autapomorphic features: very thick and broad bone with a complex saddle−shaped dorsal surface, and a narrow vertical lamina between the prefrontal and lacrimal facets. This study supports the hypothesis that a fourth large theropod was present in the Cenomanian of Morocco together with Carcharodontosaurus, Deltadromeus, and Spinosaurus.

Źródło:

Acta Palaeontologica Polonica; 2012, 57, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Osteology of the sauropod embryos from the Upper Cretaceous of Patagonia

Autorzy:

Salgado, L
Coria, R.A.
Chiappe, L.M.

Powiązania:

https://bibliotekanauki.pl/articles/20141.pdf

Data publikacji:

2005

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Cretaceous
ontogenetic development
Auca Mahuevo
Upper Cretaceous
osteology
cranial anatomy
Patagonia
sauropod
Titanosauria
Anacleto Formation
embryo
paleontology

Opis:

Exceptionally well−preserved embryonic skulls of Upper Cretaceous (Campanian Anacleto Formation) sauropods from Auca Mahuevo (Neuquén Province, Argentina) provide important insights into the ontogeny and evolution of titanosaurian neosauropods. The most important cranial modifications occurring during titanosaurian ontogeny appear to be centered on the infraorbital and narial regions, which exhibit a substantial degree of “mosaic” evolution. On one hand, the Auca Mahuevo embryos show a large jugal that forms part of the lower margin of the skull and unretracted external nares, as indicated by the position and orientation of the lacrimals as well as the anterior extension of the frontals. Both of these features are ancestral for neosauropods, being present in prosauropods. On the other hand, the embryonic skull exhibits a large ventral notch, tentatively interpreted as homologous to the neosauropod preantorbital fenestra, that opens ventral to the jugal and between the maxilla and the quadratojugal, and a temporal region that closely resembles the adult neosauropod condition. This mosaic of character states indicates that different regions of the skull of titanosaurian neosauropods acquired their characteristic morphology at substantially different rates during their ontogenetic development.

Źródło:

Acta Palaeontologica Polonica; 2005, 50, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Taxonomy and taphonomy of Cenomanian (Upper Cretaceous) nautilids from Annopol, Poland

Autorzy:

Machalski, M.
Wilmsen, M.

Powiązania:

https://bibliotekanauki.pl/articles/139221.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

nautilids
condensed deposits
taphonomy
cenomanian
Cretaceous
Annopol
Polska
tafonomia
cenoman
kreda
Polska

Opis:

A nautilid faunule of seven specimens, comprising Eutrephoceras bouchardianum (d’Orbigny, 1840), Cymatoceras deslongchampsianum (d’Orbigny, 1840), and Cymatoceras tourtiae (Schlüter, 1876) is described from a condensed middle Cenomanian interval at Annopol, Poland. C. tourtiae is recorded for the first time in Poland. The studied material consists of reworked phosphatised internal moulds of phragmocones, which may be of early or middle Cenomanian age, given the stratigraphic range of the associated ammonites. The nautilid moulds vary in inferred mode of infilling, and in intensity of abrasion, bioerosion and mineralisation. The sediment entered the phragmocones in two ways: 1) through punctures in the shell, the result of bioerosion or mechanical damage; 2) through siphonal openings by intracameral currents. In contrast to the fossil moulds from the Albian phosphorites of Annopol, which originated via direct precipitation of apatite around and/or inside fossils, the present nautilid moulds seem to have originated through secondary phosphatisation of the initially calcareous moulds. Diversity of taphonomic signatures in nautilid material from the middle Cenomanian interval at Annopol is compatible with the complex, multievent depositional scenario proposed for this level.

Źródło:

Acta Geologica Polonica; 2015, 65, 4; 495-506
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Age of the Upper Cretaceous Nemegt Formation (Mongolia) on charophytan evidence

Autorzy:

Karczewska, J.
Ziembinska-Tworzydlo, M.

Powiązania:

https://bibliotekanauki.pl/articles/21957.pdf

Data publikacji:

1983

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

The assemblages of Charophyta from the Nemegt Formation (Upper Cretaceous) and some Paleocene deposits of Mongolia are compared to those from China, Europe and America. It appears that Charophyta are useful in stratigraphy of continental deposits. The present investigations provided new evidence of the age of the Nemegt Formation from Mongolia. The assemblage of this formation is intermediate between two Upper Cretaceous assemblages from the “Red Beds” from China. Comparisons with the Chinese, European and American assemblages indicate that the Nemegt Formation is not younger than the Lower Campanian, thus is older than it was supposed before. The state of preservation of the oogonia permit to draw some ecological conclusions.

Źródło:

Acta Palaeontologica Polonica; 1983, 28, 1-2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

The first giant titanosaurian sauropod from the Upper Cretaceous of North America

Autorzy:

Fowler, D.W.
Sullivan, R.M.

Powiązania:

https://bibliotekanauki.pl/articles/22113.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

Argentinosaurus(Cenomanian, Argentina) is generally accepted as being the largest dinosaur so far discovered and is one of several giant titanosaurian sauropods known from the Upper Cretaceous of South America and Asia, but surprisingly not from North America. Here we present the first evidence of giant titanosaurian sauropods from the Upper Cretaceous of North America: two enormous vertebrae and a partial femur, from the Naashoibito Member of the Ojo Alamo Formation, New Mexico, and referred to Alamosaurus sanjuanensis. One of the new vertebrae, a posterior cervical, is comparable in size to a posterior cervical described for Puertasaurus: an Argentinosaurus−sized titanosaurian from the Maastrichtian of Argentina. This makes A. sanjuanensisthe largest dinosaur from North America, and among the largest in the world. These findings indicate that A. sanjuanensis is diagnosed based on immature remains, which may have implications for cladistic analyses.

Źródło:

Acta Palaeontologica Polonica; 2011, 56, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Trace fossils from the Upper Cretaceous Capacete Formation, Sanfranciscana Basin, Central Brazil

Autorzy:

Sedorko, Daniel
Alessandretti, Luciano
Warren, Lucas Veríssimo
Verde, Mariano
Rangel, Caio César
Ramos, Kimberly Silva
Netto, Renata Guimarães

Powiązania:

https://bibliotekanauki.pl/articles/1836263.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

meandering fluvial system
insects
continental trace fossils
Scoyenia ichnofacies

Opis:

The Upper Cretaceous Capacete Formation, from the intracratonic Sanfranciscana Basin, central Brazil, consists of epiclastic sediments with a significant aeolian contribution. This unit has been traditionally interpreted as deposited by alluvial fans distally grading to braided rivers in an arid- to semiarid climate within the central part of southwestern Gondwana. Locally, some expositions with wide lateral extension show architectural elements indicative of deposition in meandering rivers, such as floodplain fines (FF) interbedded with crevasse splay (CR), lateral-accretion macroforms (LA), and channels (CH). Bioturbation within the meandering fluvial deposits is commonly associated with the floodplain element, mainly occurring in fine-grained sandstone and mudstone. The lateral-accretion elements and channel deposits are barren of trace fossils. Sandstone with climbing ripples (Sr) from the element CR show low bioturbation of meniscate trace fossils assigned to Taenidium, Beaconites, and Scoyenia ichnogenera. Simple vertical and horizontal burrows identified as Skolithos and Palaeophycus occur associated with Taenidium and Camborygma in sandstone facies (Sr, St and Sh), as well as rhizoliths, representing the Scoyenia ichnofacies. The predominance of trace fossils related to the FF and CR architectural elements attests to the colonization mostly by insects in episodic and vegetated flood plains of the meandering river system from the Capacete Formation. Thus, despite the primarily arid to semiarid conditions interpreted for the inner parts of the newly formed South American continent during the Upper Cretaceous, our new data support deposition under humid conditions in some intervals of the Capacete Formation from the Sanfranciscana Basin.

Źródło:

Annales Societatis Geologorum Poloniae; 2020, 90, 3; 247-260
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:

First Upper Cretaceous dinosaur track assemblage from Jordan (Middle East) : preliminary results

Autorzy:

Klein, Hendrik
Gierliński, Gerard
Lallensack, Jerns N.
Abu Hamad, Abdalla
Al-Mashakbeh, Habes
Alhejoj, Ikhlas
Konopka, Marcin
Błoński, Marcin

Powiązania:

https://bibliotekanauki.pl/articles/1836264.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

Ajlun Group
Na’ur Formation
Cenomanian
footprints
theropod
sauropod
ornithopod

Opis:

Dinosaur tracks from Jordan (Middle East) have only been briefly reported in geological overview papers and books. We present here the first description and documentation of Jordanian dinosaur tracks based on a new tracksite from the south-central part of the country. The track-bearing strata belong to marginal marine (tidal flat) deposits of the Na’ur Formation (Upper Cretaceous, Cenomanian). This unit largely consists of well-bedded limestones, dolomites and marls that contain abundant marine invertebrate fossils such as bivalves, ammonites and foraminifers. The dinosaur ichnofauna occurs on four different levels and comprises abundant theropod tracks and trackways as well as isolated sauropod and ornithopod tracks. Theropod trackways consist of two different morphotypes. Morphotype 1 is tridactyl (26 cm pes length) and with a broad, but short metatarsal area and resembles the ichnogenus Picunichnus from the Lower Cretaceous (Albian) of Argentina. Morphotype 2 (36 cm pes length) has extensive and narrow metatarsal impressions continuously occurring along regularly-spaced trackways. This suggests either a plantigrade movement of the trackmaker or reflects preservational factors. By their over-all-shape with thin digits, Morphotype 2 resembles described penetrative tracks suggesting a strong influence of the substrate. Sauropod tracks are relatively small (40 cm pes length) and show low heteropody with a kid-ney-shaped manus imprint, pointing to a Sauropodichnus-like form. The single ornithopod pes track (18 cm in length) is similar to material described as Ornithopodichnus from the Lower Cretaceous of Korea. Due to the incomplete material of sauropod and ornithopod prints, no concrete assignment is given to this material and further study is needed. The presence of dinosaur tracks proves a temporary subaerial exposure of the surface whereas the main part of the Na’ur Formation is dominated by subaqueous activity of marine faunas.

Źródło:

Annales Societatis Geologorum Poloniae; 2020, 90, 3; 331-342
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:

Recycled Upper Cretaceous calcareous nannoplankton from the Pecten Conglomerate of Cockburn Island, Antarctica

Autorzy:

Gaździcka, Elżbieta
Gaździcki, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/2052709.pdf

Data publikacji:

1994

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Antarctica
James Ross Basin
Upper Cretaceous
calcareous nannoplankton

Źródło:

Polish Polar Research; 1994, 15, 1-2; 3-13
0138-0338
2081-8262

Pojawia się w:

Polish Polar Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Geochemistry of Upper Cretaceous of the Bozeş Formation (Apuseni Mts., Romania) : provenance implications

Autorzy:

Zaharia, L.
Balc, R.
Stremţan, C. C.
Socaciu, A.

Powiązania:

https://bibliotekanauki.pl/articles/2059954.pdf

Data publikacji:

2016

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

geochemistry
provenance
Upper Cretaceous
Bozeş flysch
Apuseni Mountains

Opis:

A whole-rock geochemical study was carried out on sandstones from the Upper Cretaceous Bozeş Formation in the southeastern part of the Apuseni Mountains (Romania) in order to constrain their provenance and depositional setting. The geochemical results were compared and integrated with previously reported provenance indicators, such as framework composition and heavy mineral assemblages. The chemical composition is similar for all samples investigated, with limited ranges for both major oxides and trace elements. The sandstones are potassic (Na2O/K2O < 1) and can be classified mainly as arenites with a few greywackes. Their immature to relatively mature character is revealed by the SiO2/Al2O3 ratios, ranging between 3.90 and 11.25, as well as their high Sr/Rb ratios. The source rocks were affected by weak to moderate chemical alteration, as indicated by the specific index (CIA), with values between 47 and 71. The detrital material was influenced by a little hydraulic sorting during transportation, while post-depositional eftects were limited to K-metasomatism. Two major potential source types were identified based on the chemical composition of the samples studied: a felsic magmatic arc and a recycled, quartzose metasedimentary basement. Our data indicate that the depositional setting is likely to be on a convergent margin. The results are consistent with uplifted and exhumed Transylvanian basement as the major source area.

Źródło:

Geological Quarterly; 2016, 60, 3; 746--757
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:

A new titanosaur sauropod dinosaur from the Upper Cretaceous of North Patagonia, Argentina

Autorzy:

Filippi, L.S.
Garcia, R.A.
Garrido, A.C.

Powiązania:

https://bibliotekanauki.pl/articles/20301.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

new species
titanosaur
sauropod dinosaur
dinosaur
Upper Cretaceous
Cretaceous
North Patagonia
Argentina
paleontology
Sauropoda
Titanosauria
phylogenesis
Anacleto Formation
Neuquen basin
Narambuenatitan palomoi

Opis:

A new sauropod titanosaur from the Upper Cretaceous Anacleto Formation is described. Narambuenatitan palomoi gen. et sp. nov., is diagnosed by cranial and axial autapomorphies. The holotype, which represent a subadult individual, consists of the left premaxilla and maxilla, braincase, both quadrates, one cervical vertebrae, one dorsal vertebra, fragments of cervical and dorsal ribs, seventeen caudal vertebrae, caudal transverse processes, fragments of haemal arches, left sternal plate, right coracoid, left humerus, left ulnae, both pubes, iliac pedicel, proximal fragment of right ischia, and an incomplete left femur. The phylogenetic analysis indicates that Narambuenatitan is a non−eutitanosaurian lithostrotian, and that it shares with Epachthosaurus a neural spine in middle caudal vertebrae which are laminar and posteriorly elongated.

Źródło:

Acta Palaeontologica Polonica; 2011, 56, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Bases of Upper Cretaceous octocorals from Poland
Bazalne części górnokredowych Octocorallia z Polski

Autorzy:

Malecki, J.

Powiązania:

https://bibliotekanauki.pl/articles/21998.pdf

Data publikacji:

1982

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

Bases of octocorals, mostly epifaunial, from Cretaceous deposits of the environs of Cracow, Poland have been classified according to parataxonomic criteria. A form-genus Octobasis has been proposed writer for eleven forms-species of octocorals.
Podstawy korali ośmiopromiennych opisywane były bardzo rzadko w literaturze światowej. Poznanie tych skamieniałości, pochodzących z kredy, zawdzięczamy głównie Nielsenowi (1913, 1917, 1919, 1925, 1937) i Voigtowi (1958). Podstawy kredowych Octocorallia znajdujemy na różnych skamieniałościach: małżach, belemnitach, jeżowcach (zwłaszcza na pancerzach Echinocorys i Micraster); zwykle są one zachowane bez corallum. Materiały, którymi dysponował autor, pochodzą z osadów dolnego kampanu okolic Krakowa. W materiałach tych stwierdzono przedstawicieli czterech rodzin: Clavulariidae, Primnoidae, Isididae i Virgulariidae oraz szereg podstaw, których nie można było zaliczyć do żadnej ze znanych rodzin. Dobrze zachowane podstawy korali ośmiopromiennych tego zbioru należą zapewne do różnych gatunków. Ze względu na fakt, iż podstawy Octocorallia nie były dotąd szczegółowo badane, a znajdowane są przeważnie jako jedyne części szkieletu, określenie ich przynależności rodzajowej natrafia na duże trudności. Autor wprowadza terminologię parataksonomiczną dla tych skamieniałości. Tylko w niektórych wypadkach wraz z podstawami zachowują się również dalsze części szkieletu, które umożliwiają zaliczenie ich do znanych taksonów. Ze względu na bardzo zmienną budowę podstaw stosowanie klasyfikacji parataksonomicznej nie jest łatwe. W wyżej wymienionych pracach Nielsena i Voigta autorzy opisując poszczególne gatunki nie przywiązywali większej wagi do bardzo nieraz skomplikowanych struktur korzeniowych. Autor opisując te struktury zachowuje dla opisanych podstaw korali istniejące nazwy, a dla nie opisanych urabia nowe. Z prac Nielsena i Voigta znane są następujące nazwy na określenie korali ośmiopromiennych: 1. Płożące się, wstążkowate podstawy zaliczone do Epiphaxum auloporoides Lonsdale. 2. Rozgałęzione utwory przypominające korzenie podłużnie prążkowane odnoszące się do rodzaju Moltkia. 3. Okrągławe tarczki pokryte radialnymi, cieniutkimi, lekko falistymi prążkami zaliczane do rodzaju Isis. Pozostałe przedstawione na schematach (pl. 26) i fotografiach (pls 23—25) typy podstaw korali ośmiopromiennych nie były dotąd opisywane. Autor proponuje dla takich podstaw korali ośmiopromiennych nazwę rodzajową Octobasis, nazwy zaś gatunkowe będą urabiane od głównych cech morfologicznych i ornamentacji tych skamieniałości. Takich sztucznych gatunków wydziela autor jedenaście. Badając podstawy Octocorallia przyrośnięte do jeżowców stwierdzamy wśród nich 14 następujących typów (pl. 26): 1. okrągławe tarczki o gładkiej powierzchni (fig. 1): Octobasis glabra; 2. okrągławe tarczki podzielone na 6—8 płatów (fig. 2): O. bullata; 3. okrągławe tarczki z rzadkimi radialnymi prążkami (fig. 3): Primnoa costata; 4. okrągławe tarczki z radialnymi, dychotomicznie rozdzielającymi się prążkami (fig. 4): O. circulata; 5. okrągławe tarczki z radialnymi, cieniutkimi, gęstymi, lekko pofałdowanymi prążkami (fig. 5): Isis vertebralis Hen.; 6. okrągławe tarczki z prążkami tworzącymi labiryntowe sploty (fig. 6): O. ornata; 7. podstawy amebokształtne o gładkiej powierzchni (fig. 7): O. lobata; 8. podstawy w formie wieloramiennej gwiazdy o gładkiej powierzchni, których ramiona mają zaokrąglone zakończenia (fig. 8): O. dichotoma (= Moltkia); 9. podstawy w formie wieloramiennej gwiazdy z ostrymi zakończeniami ramion (figs 10, 11): O. spinosa; 10. podstawy różnorodnie wykształcone, zbudowane z grubych powyginanych wałków, tworzących sploty (fig. 9): O. nodosa; 11. Podstawy złożone z różnokształtnych płatów pokrytych labiryntowymi prążkami (fig. 14): O. flabellata; 12. podstawy przypominające korzenie z podłużnymi prążkami (fig. 12): O. sulcata (= Moltkia?); 13. podstawy przypominające korzenie, bardzo powykręcane, o gładkiej powierzchni (fig. 15): O. flexuosa; 14. podstawy zbudowane w formie wałków, jednakowej szerokości, z licznymi odgałęzieniami, pokryte równoległymi prążkami (fig. 13): Epiphaxum auloporoides Lonsdale.

Źródło:

Acta Palaeontologica Polonica; 1982, 27, 1-4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 16.

Tytuł:

Integrated biostratigraphy of the Santonian through Maastrichtian (Upper Cretaceous) of extra-Carpathian Poland

Autorzy:

Walaszczyk, I.
Dubicka, Z.
Olszewska-Nejbert, D.
Remin, Z.

Powiązania:

https://bibliotekanauki.pl/articles/139026.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Upper Cretaceous
Extra-Carpathian Poland
biostratigraphy
correlation
chronostratigraphy
górna kreda
Karpaty
Polska
biostratygrafia
korelacja
chronostratygrafia

Opis:

The biostratigraphic importance, current zonations, and potential for the recognition of the standard chronostratigraphic boundaries of five palaeontological groups (benthic foraminifers, ammonites, belemnites, inoceramid bivalves and echinoids), critical for the stratigraphy of the Santonian through Maastrichtian (Upper Cretaceous) of extra-Carpathian Poland, are presented and discussed. The summary is based on recent studies in selected sections of southern Poland (Nida Synclinorium; Puławy Trough including the Middle Vistula River composite section; and Mielnik and Kornica sections of south-eastern Mazury-Podlasie Homocline) and of western Ukraine (Dubivtsi). The new zonation based on benthic forams is presented for the entire interval studied. Zonations for ammonites, belemnites and inoceramid bivalves are compiled. All stage boundaries, as currently defined or understood, may easily be constrained or precisely located with the groups discussed: the base of the Santonian with the First Occurrence (FO) of the inoceramid Cladoceramus undulatoplicatus; the base of the Campanian with the Last Occurrence (LO) of the crinoid Marsupites testudinarius and approximated by the range of the foraminifer Stensioeina pommerana; and the base of the Maastrichtian approximated by the FO of the inoceramid bivalve Endocostea typica and the FO of the belemnite Belemnella vistulensis. The positions of substage boundaries, as currently understood, are constrained in terms of the groups discussed.

Źródło:

Acta Geologica Polonica; 2016, 66, 3; 313-350
0001-5709

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Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 17.

Tytuł:

The gaudryceratid ammonoids from the Upper Cretaceous of the James Ross Basin, Antarctica

Autorzy:

Raffi, M.E.
Olivero, E.B.
Milanese, F.N.

Powiązania:

https://bibliotekanauki.pl/articles/21055.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

We describe new material of the subfamily Gaudryceratinae in Antarctica, including five new species: Gaudryceras submurdochi Raffi and Olivero sp. nov., Anagaudryceras calabozoi Raffi and Olivero sp. nov., Anagaudryceras subcompressum Raffi and Olivero sp. nov., Anagaudryceras sanctuarium Raffi and Olivero sp. nov., and Zelandites pujatoi Raffi and Olivero sp. nov., recorded in Santonian to Maastrichtian deposits of the James Ross Basin. The early to mid-Campanian A. calabozoi Raffi and Olivero sp. nov. exhibits a clear dimorphism, expressed by marked differences in the ornament of the adult body chamber. Contrary to the scarcity of representative members of the subfamily Gaudryceratinae in the Upper Cretaceous of other localities in the Southern Hemisphere, the Antarctic record reveals high abundance and diversity of 15 species and three genera in total. This highly diversified record of gaudryceratins is only comparable with the Santonian–Maastrichtian Gaudryceratinae of Hokkaido, Japan and Sakhalin, Russia, which yields a large number of species of Anagaudryceras, Gaudryceras, and Zelandites. The reasons for a similar, highly diversified record of the Gaudryceratinae in these distant and geographically nearly antipodal regions are not clear, but we argue that they probably reflect a similar paleoecological control.

Źródło:

Acta Palaeontologica Polonica; 2019, 64, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:

Theropod dinosaurs from the Upper Cretaceous of the South Pyrenees Basin of Spain

Autorzy:

Torices, A.
Currie, P.J.
Canudo, J.I.
Pereda-Suberbiola, X.

Powiązania:

https://bibliotekanauki.pl/articles/20400.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

The dinosaur record in the South Pyrenees Basin is diverse and rich. A total of 142 theropod teeth were studied for this paper, which constitutes one of the richest samples for these remains in Europe. Eight upper Campanian to upper Maastrichtian outcrops from the Pyrenees produced six non-avian theropod taxa (Theropoda indet., Coelurosauria indet., ?Richardoestesia, ?Dromaeosauridae indet., ?Pyroraptor olympius, ?Paronychodon). These six taxa are added to two previously described theropods (a Richardoestesia-like form and a possible ornithomimosaurid), indicating that there was considerable theropod diversity on the Iberian Peninsula during the Late Cretaceous.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:

Palynostratigraphy of dinosaur bone-bearing deposits from the Upper Cretaceous of Western Bulgaria

Autorzy:

Pavlishina, Polina
Dochev, Docho
Nikolov, Vladimir
Yaneva, Marlena
Konyovska, Ralitsa

Powiązania:

https://bibliotekanauki.pl/articles/138631.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

palynology
Normapolles
Titanosauria
Santonian
Campanian
palaeoecology
palinologia
tytanozaury
santon
kampan
paleoekologia

Opis:

Palynological investigation of the Vrabchov dol locality (Western Bulgaria) which recently yielded fragmentary dinosaur bones attributed to the clade Titanosauria, reveals well-preserved sporomorph assemblages dominated by angiosperm pollen from the Normapolles group, spores and rare gymnosperms. The age assessment of the studied sequence is based on the diagnostic Normapolles species, such as Oculopollis orbicularis Góczán, 1964, Oculopollis zaklinskaiae Góczán, 1964, Krutzschipollis spatiosus Góczán in Góczán et al., 1967 and Krutzschipollis crassus (Góczán, 1964) Góczán in Góczán et al., 1967. The concurrent presence of these pollen species suggests a late Santonian–early Campanian age for the succession. The sporomorph association is encountered in a palynofacies dominated by continental elements, including translucent phytoclasts (tissues, wood remains and plant cuticles). The sedimentary succession shows no evidence of marine elements and a very low proportion of AOM that attests to deposition within a lagoonal to foreshore marine environment, with high continental input and short transportation. The vegetation in the studied area was primarily composed of a range of Normapolles-producing angiosperms and secondarily of pteridophyte spore-producing plants. Gymnosperms were rare. Such a vegetation pattern reflects a warm, seasonally dry climate during the late Santonian–earliest Campanian in the studied area. The dinosaurs inhabited a wet lowland area, probably rich in herbaceous plants.

Źródło:

Acta Geologica Polonica; 2019, 69, 4; 617-626
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 20.

Tytuł:

A new mammal from the Turonian–Campanian (Upper Cretaceous) Galula Formation, southwestern Tanzania

Autorzy:

O’Connor, P.M.
Krause, D.W.
Stevens, N.J.
Groenke, J.R.
MacPhee, R.D.E.
Kalthoff, D.C.
Roberts, E.M.

Powiązania:

https://bibliotekanauki.pl/articles/20223.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

We here establish a new mammaliaform genus and species, Galulatherium jenkinsi (Mammalia), from the Upper Cretaceous Galula Formation in the Rukwa Rift Basin of southwestern Tanzania. This represents the first named taxon of a mammaliaform from the entire Late Cretaceous of continental Afro-Arabia, an interval of 34 million years. Preliminary study of the holotypic and only known specimen (a partial dentary) resulted in tentative assignation to the Gondwanatheria, a poorly known, enigmatic clade of Late Cretaceous–Paleogene Gondwanan mammals (Krause et al. 2003). The application of advanced imaging (μCT) and visualization techniques permits a more detailed understanding of key anatomical features of the new taxon. It reveals that the lower dentition consisted of a large, procumbent lower incisor and four cheek teeth, all of which were evergrowing (hypselodont). Importantly, all of the teeth appear devoid of enamel. Comparisons conducted with a range of Mesozoic and selected Cenozoic mammaliaform groups document a number of features (e.g., columnar, enamel-less and evergrowing teeth, with relatively simple occlusal morphology) expressed in Galulatherium that are reminiscent of several distantly related groups, making taxonomic assignment difficult at this time. Herein we retain the provisional referral of Galulatherium (RRBP 02067) to Gondwanatheria; it is most similar to sudamericids such as Lavanify and Bharratherium from the Late Cretaceous of Madagascar and India, respectively, in exhibiting relatively simple, high-crowned, columnar cheek teeth. Other features (e.g., enamel-less dentition) are shared with disparate forms such as the Late Jurassic Fruitafossor and toothed xenarthrans (e.g., sloths), here attributed to convergence. Revised analyses of the depositional context for the holotype place it as having lived sometime between the late Turonian and latest Campanian (roughly 91–72 million years ago). This enhanced geochronological context helps to refine the palaeobiogeographical significance of Galulatherium among Cretaceous mammals in general and those from Gondwanan landmasses specifically.

Źródło:

Acta Palaeontologica Polonica; 2019, 64, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 21.

Tytuł:

New material of a derived ornithomimosaur from the Upper Cretaceous Nemegt Formation of Mongolia

Autorzy:

Bronowicz, R.

Powiązania:

https://bibliotekanauki.pl/articles/21203.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

ornithomimosaur
Upper Cretaceous
Cretaceous
Nemegt Formation
Mongolia
Dinosauria
Ornithomimidae
Anserimimus
paleontology
new species
Anserimimus planinychus

Opis:

New material of an ornithomimid from the Late Cretaceous deposits of Tsagan Khushu (Gobi Desert, Mongolia) is described. The material includes a partial axial skeleton, and hind and forelimb elements. The specimen is similar to Anserimimus planinychus from nearby Bugin Tsav locality in having ventrally flat, long, almost straight manual unguals. The new specimen differs from A. planinychus in the length of the penultimate manual phalanx II−2, which is only slightly shorter than Ph III−3, in a considerably lesser alae of the manual unguals, and in the height/width ratio of the proximal articular surfaces. The material suggests presence of third, hitherto unknown ornithomimid from the Nemegt Formation.

Źródło:

Acta Palaeontologica Polonica; 2011, 56, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 22.

Tytuł:

Dermal armor histology of Saltasaurus loricatus, an Upper Cretaceous sauropod dinosaur from Northwest Argentina

Autorzy:

Cerda, I A
Powell, J.E.

Powiązania:

https://bibliotekanauki.pl/articles/22424.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

dermal armor
histology
Saltasaurus loricatus
Upper Cretaceous
Cretaceous
sauropod dinosaur
dinosaur
Argentina
Sauropoda
Titanosauria
osteohistology
osteoderm
dermal ossicle
metaplasia
paleontology

Opis:

The first unambiguous evidence of the presence of osteoderms in sauropod dinosaurs came from the discovery of Saltasaurus loricatus, a titanosaur from the Upper Cretaceous of Argentina. The dermal armor of Saltasaurus is composed of bony plates and small dermal ossicles. Here, we analyze the bone microstructure of these elements and provide information regarding its origin and development. The bony plates are composed almost entirely of reconstructed cancellous bone. Remains of primary bone consist of coarse bundles of mineralized collagenous fibers towards the external surface. Also, woven fibered bone tissue appears in the basal and lateral regions. Dermal ossicles lack secondary remodeling, and their matrix is formed by three orthogonal systems of collagenous fiber bundles. Growth lines are present in both bony plates and ossicles. Bone histology reveals that osteoderms mainly originated through direct mineralization (metaplasia) of the dermis, although other mechanisms are also involved (at least in the origin of dermal plates). The common features of development and integumental location of the osteoderms of Saltasaurus and other non−related vertebrates (e.g., lepidosaurs, crocodylomorphs) are linked to the intrinsic skeletogenic properties of the dermis.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 3; 389-398
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 23.

Tytuł:

The trace fossil Lepidenteron lewesiensis (Mantell, 1822) from the Upper Cretaceous of southern Poland

Autorzy:

Jurkowska, A.
Uchman, A.

Powiązania:

https://bibliotekanauki.pl/articles/138831.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

ichnofossils
bioturbation
Terebella
Upper Cretaceous
Miechów Upland
ichnofosylium
bioturbacja
kreda górna
Wyżyna Miechowska

Opis:

Lepidenteron lewesiensis (Mantell, 1822) is an unbranched trace fossil lined with small fish scales and bones, without a constructed wall. It is characteristic of the Upper Cretaceous epicontinental, mostly marly sediments in Europe. In the Miechów Segment of the Szczecin-Miechów Synclinorium in southern Poland, it occurs in the Upper Campanian–Lower Maastrichtian deeper shelf sediments, which were deposited below wave base and are characterized by total bioturbation and a trace fossil assemblage comprising Planolites, Palaeophycus, Thalassinoides, Trichichnus, Phycosiphon, Zoophycos and Helicodromites that is typical of the transition from the distal Cruziana to the Zoophycos ichnofacies. L. lewesiensis was produced by a burrowing predator or scavenger of fishes. The tracemaker candidates could be eunicid polychaetes or anguillid fishes.

Źródło:

Acta Geologica Polonica; 2013, 63, 4; 611-623
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 24.

Tytuł:

Dimorphism in tetragonitid ammonoid Tetragonites minimus from the Upper Cretaceous in Hokkaido, Northern Japan

Autorzy:

Aiba, D.

Powiązania:

https://bibliotekanauki.pl/articles/31341368.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

paleontology
dimorphism
tetragonitid
ammonoid
Ammonoidea
Tetragonidae
Tetragonites minimus
Cretaceous
Upper Cretaceous
Hokkaido
Japan

Źródło:

Acta Palaeontologica Polonica; 2022, 67, 4; 949-961
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 25.

Tytuł:

New protoceratopsid specimens improve the age correlation of the Upper Cretaceous Gobi Desert strata

Autorzy:

Czepiński, L.

Powiązania:

https://bibliotekanauki.pl/articles/2082224.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Dinosauria
Ceratopsia
Protoceratopsidae
biostratigraphy
gradual evolution
anagenesis
Mesozoic
Mongolia

Opis:

New protoceratopsid (Dinosauria: Ceratopsia) specimens from two Late Cretaceous Mongolian localities with problematic stratigraphy are described. A specimen of Protoceratops andrewsi from the Zamyn Khond locality enables its correlation with other sites of the Djadokhta Formation. P. andrewsi is also abundant in the Üüden Sair locality, variously assigned to the Djadokhta or Baruungoyot formations. However, one new specimen from that site exhibits a fused nasal horn and a sharp buccal crest of the dentary. With these apomorphic features, it resembles Bagaceratops rozhdestvenskyi, known from the Baruungoyot and Bayan Mandahu formations. It may be an evidence for: sympatric evolution of B. roz hdestvenskyi and P. andrewsi; a dispersal of Bagaceratops to Üüden Sair; hybridization between the two parapatric taxa; or the anagenetic evolutionary transition from P. andrewsi to Bagaceratops. The anagenetic explanation appears to be most strongly supported by given data. This new record advocates for the age of the sediments from the Üüden Sair locality being intermediate between the Djadokhta and Baruungoyot formations. The observed changes in the frequency of the apomorphic features within protoceratopsid samples from various Late Cretaceous sites of the Gobi Desert potentially enable their correlations and chronological ordering.

Źródło:

Acta Palaeontologica Polonica; 2020, 65, 3; 481-497
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 26.

Tytuł:

First tyrannosaurid remains from the Upper Cretaceous “El Gallo” Formation of Baja California, Mexico

Autorzy:

Peecook, B.R.
Wilson, J.A.
Hernandez-Rivera, R.
Montellano-Ballesteros, M.
Wilson, G.P.

Powiązania:

https://bibliotekanauki.pl/articles/21150.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

We report a complete left fourth metatarsal collected from rocks of the Upper Cretaceous (Campanian) “El Gallo” Formation exposed along the Pacific Ocean near El Rosario, Baja California, México. The metatarsal IV was part of an arctometatarsalian metatarsus, as evidenced by a deep medial notch proximally and extensive articulation for metatarsal III. This condition, along with the U-shape of the proximal end, supports identification as tyrannosauroid. It is assigned to Tyrannosauridae based on features on the posterior surface of the shaft, but finer taxonomic resolution is not possible. Compared to other tyrannosauroids, the metatarsal is relatively short, closely resembling the proportions of the gracile Albertosaurus sarcophagus rather than the much more massive, robust metatarsals of Tyrannosaurus rex. The Baja tyrannosaurid metatarsal is shorter than almost all other tyrannosauroid fourth metatarsals, raising the possibility that it pertains to an immature individual. North American tyrannosauroids are best known from the northern coast of the Western Interior Seaway, as well as less frequently on the southern coast of the seaway in Utah and New Mexico. The new record in Baja marks the first unambiguous skeletal material of a tyrannosaurid both in México and along the Pacific coast.

Źródło:

Acta Palaeontologica Polonica; 2014, 59, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 27.

Tytuł:

Sequence stratigraphy of the Upper Cretaceous–Eocene Belqa Group of Jordan (southern Tethys margin)

Autorzy:

Kalifi, Amir
Ardila-Sanchez, Maria
Messaoud, Jihede Hay
Laila, Wesam Abu
Buchem, Frans van
Ibrahim, Khalil
Powell, John

Powiązania:

https://bibliotekanauki.pl/articles/24202139.pdf

Data publikacji:

2023

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Tethys
stratigraphy
Jordan

Opis:

The Belqa Group of Jordan (Upper Cretaceous–Eocene) contains a remarkable succession of sedimentary lithofacies, including chalk, sandstone, chert, phosphorite, oyster mounds and organic-rich marls deposited along the passive southern margin of the Neo-Tethys Ocean. The Belqa Group is now outcropping in spectacular wadis where they can be studied in detail. The exceptional outcrops exposures provide unique opportunities for studying three-dimensional spatial facies variations. However, this 3D facies distribution requires robust time control and the combination of modern sequence stratigraphic concepts and high-resolution dating methods. We report the establishment of a regional sequence stratigraphic model that provides the temporal framework for further detailed sedimentological, palaeontological and geochemical studies. Preliminary results show a stratigraphic organization in four major depositional sequences (3rd order), which are broadly in agreement with the lithostratigraphic formations. The age dating is based on new nano-fossil analyses and C/O and Sr isotope stratigraphy. A subdivision into higher-frequency sequences (4th/5th order) significatively improves the resolution of the stratigraphic framework and our understanding of spatio-temporal distribution of the sedimentary facies. The four sequences are: 1) The B1 sequence (Upper Coniacian-Santonian), characterized by a transgressive phase of chalk-rich sedimentation (coccolithophore-dominated) and a regressive phase of a prograding siliciclastics with a distal transition to the first phosphorite-chert facies. 2) The B2 sequence (Lower Campanian) also starts with a transgressive chalk dominated facies and subsequently develops into a chert-dominated marl facies (radiolarian-dominated). The chert is locally associated with thin phosphates and coquinas, as well as organic-matter rich facies in proximal marine settings. 3) The B3 sequence (Upper Campanian) is also characterized by a transgressive chalk dominated facies. The regressive phase is constituted by dm- to m-thick phosphorite beds that were deposited coevally with giant oyster banks (decameter scale). 4) The B4 sequence (Maastrichtian-Paleocene) represents a dramatic facies change to organic-rich pelagic marls, and can probably be further subdivided. This sedimentary succession highlights both gradual and rapid changes in biogenic productivity and geochemistry. These changes are punctuated and partly driven by significant relative sea-level changes, and likely also larger scale palaeoceanographical processes that are the focus of future work.

Źródło:

Geotourism / Geoturystyka; 2023, 1-2 (72-73); 32--32
1731-0830

Pojawia się w:

Geotourism / Geoturystyka

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 28.

Tytuł:

Upper Cretaceous amniotic eggs from Gobi Desert
Kopalne jaja owodniowców z późnej kredy pustyni Gobi

Autorzy:

Sabath, K.

Powiązania:

https://bibliotekanauki.pl/articles/21370.pdf

Data publikacji:

1991

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

paleontology
Cretaceous
Upper Cretaceous
fossil
amniotic egg
egg shell
Dinosauria
Aves
paleobiology
taphonomy
Gobi Desert

Opis:

There are described several types of Upper Cretaceous fossil amniote eggs, clutches and eggshells, collected during the Polish-Mongolian Paleontological Expeditions (1963—1971) in several localities of the Gobi Desert. Isotopic ratios of C and О are reported and discussed. The eggs may be attributed to saurischian and ornithischian dinosaurs, and palaeognathous birds. Four types of problematica are also described. Taphonomy and restoration of eggshells’ diffusive properties as compared with modern hard-shelled eggs suggest paleoecological interpretation of the nesting conditions as rather dry for smooth-shelled eggs, humid for ornamented eggs, and very humid for the thickest-shelled eggs. Different nest types are postulated for ornamented and smooth eggs, based on taphonomy and shell parameters.
Praca zawiera opis kolekcji późnokredowych jaj ptaków, dinozaurów gadzio- i ptasiomiedniczych, oraz prawdopodobnych skamieniałości miękkoskorupowych jaj innych gadów, odkrytych w latach 1963—71 przez Polsko-Mongolskie Wyprawy Paleontologiczne na pustyni Gobi (fig. 1). Kolekcja ta, gromadząca bogaty materiał kopalny, obejmujący kilkanaście typów jaj późnokredowych, należy do najbogatszych w świecie. Poza przeglądem mikrostruktury skorup (fig. 3, 4, 8) i kształtów jaj (fig. 2, 6; pl. 11—20), przedstawiono szacunkowe wyliczenia objętości, powierzchni, wydłużenia jaj, porowatości skorupy i jej przepuszczalności dla gazów oddechowych, porównując je z równaniami allometrycznymi dla współczesnych jaj ptasich (fig. 7, 9, tab. 1). Zaproponowano funkcjonalne wyjaśnienie roli ornamentacji, kształtu jaj i różnic tafonomicznych między gniazdami jaj ornamentowanych i gładkich (fig. 5) oraz oszacowano warunki i długość trwania inkubacji różnych typów jaj. Wyniki badań składu izotopowego węgla i tlenu w próbkach skorup (fig. 10) wskazują na przewagę lokalnych czynników diagenetycznych w kształtowaniu proporcji trwałych izotopów, nie pozwalając na wiarygodne wnioskowanie o klimacie lub diecie dinozaurów i ptaków kopalnych. Pracę wykonano w Instytucie Paleobiologii PAN w ramach problemu CPBP 04.03.

Źródło:

Acta Palaeontologica Polonica; 1991, 36, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 29.

Tytuł:

Calcareous nannofossils from the Upper Cretaceous of northern James Ross Island, Antarctica : a pilot study

Autorzy:

Švábenická, L.
Vodrážka, R.
Nývlt, D.

Powiązania:

https://bibliotekanauki.pl/articles/2060496.pdf

Data publikacji:

2012

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Antarctica
James Ross Island
Upper Cretaceous
calcareous nannofossils
biostratigraphy

Opis:

The Czech scientific expedition to northern James Ross Island, Antarctica has tested the use of calcareous nannofossils as a possible tool for stratigraphic correlation of Cretaceous and Neogene strata. Only a few samples with poor nannofossil content gave useful information for biostratigraphy. The Lower Campanian Chiastozygus garrisonii Zone and Gephyrobiscutum diabolum Subzone, respectively, was established in the lower part of the Santa Marta Formation, Lachman Crags Member, from the common occurrence of Gephyrobiscutum diabolum associated with Broinsonia parca parca and Acuturris scotus. Deposits of the Late Miocene Mendel Formation yielded exclusively reworked nannofossils from the older Upper Cretaceous deposits. Nannofossils indicate at least two distinct stratigraphic levels: Middle Coniacian and Santonian–basal Campanian, and these must have been sourced from the immediate area. The majority of the marine deposit samples studied were barren of nannofossils, probably due to late diagenetic secondary decalcification.

Źródło:

Geological Quarterly; 2012, 56, 4; 765--772
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 30.

Tytuł:

Coprolite of a durophagous carnivore from the Upper Cretaceous Godula Beds, Outer Western Carpathians, Poland

Autorzy:

Bajdek, P.

Powiązania:

https://bibliotekanauki.pl/articles/2059732.pdf

Data publikacji:

2013

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

coprolite
feces content
taphonomy
turbidite sandstone
Cretaceous

Opis:

The Upper Cretaceous turbidite sandstones of the Godula Beds at Międzybrodzie Bialskie, Outer Western Carpathians, Poland, yielded a specimen here interpreted as a coprolite due to its elongated morphology and a high content of fragmented inoceramid shells. The coprolite was produced by a durophagous carnivore, which was most likely a teleost fish, or possibly a reptile. Coprolites are therefore confirmed to have a potential utility as aggregations of body fossils in macrofossil-poor sedimentary rocks, exemplified by the Godula Beds.

Źródło:

Geological Quarterly; 2013, 57, 2; 361--364
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 31.

Tytuł:

Description of the lower jaws of Baculites from the Upper Cretaceous U.S. Western Interior

Autorzy:

Larson, N. L.
Landman, N. H.

Powiązania:

https://bibliotekanauki.pl/articles/138795.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

jaws
Upper Cretaceous
Pierre Shale
Niobrara Chalk
Baculites
szczęki
kreda górna
formacja Niobrara

Opis:

We report the discovery of lower jaws of Baculites (Ammonoidea) from the Upper Cretaceous U.S. Western Interior. In the lower Campanian Smoky Hill Chalk Member of the Niobrara Chalk of Kansas, most of the jaws occur as isolated elements. Based on their age, they probably belong to Baculites sp. (smooth). They conform to the description of rugaptychus, and are ornamented with coarse rugae on their ventral side. One specimen is preserved inside a small fecal pellet that was probably produced by a fish. Another specimen occurs inside in a crushed body chamber near the aperture and is probably in situ. Three small structures are present immediately behind the jaw and may represent the remains of the gills. In the lower Maastrichtian Pierre Shale of Wyoming, two specimens of Baculites grandis contain lower jaws inside their body chambers, and are probably in situ. In both specimens, the jaws are oriented at an acute angle to the long axis of the shell, with their anterior ends pointing toward the dorsum. One of the jaws is folded into a U-shape, which probably approximates the shape of the jaw during life. Based on the measurements of the jaws and the shape of the shell, the jaws could not have touched the sides of the shell even if they were splayed out, implying that they could not have effectively served as opercula. Instead, in combination with the upper jaws and radula, they constituted the buccal apparatus that collected and conveyed food to the esophagus.

Źródło:

Acta Geologica Polonica; 2017, 67, 1; 109-120
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 32.

Tytuł:

Ichnofabrics of the Upper Cretaceous fine-grained rocks from the Stołowe Mountains (Sudetes, SW Poland)

Autorzy:

Rotnicka, J.

Powiązania:

https://bibliotekanauki.pl/articles/2059546.pdf

Data publikacji:

2005

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Stołowe Mountains
Cretaceous
fine-grained rocks
trace fossils
ichnofabrics
ichnofacies

Opis:

Upper Cretaceous fine-grained rocks (the “Plänermergel”) from the Stołowe Mountains are in general strongly bioturbated. The sections studied (180 m thick), located in the southern part of the mountains, are dominated by mudstones, marlstones and siltstones; sandstones, partly unbioturbated, are subordinate. The entire sequence shows a succession of ichnofabrics, which reflects a transgressive-regressive cycle (Cenomanian) and a regressive cycle (lower to middle/upper? Turonian). The trace fossil assemblage contains nine ichnogenera: Asterosoma, Cylindrichnus, Ophiomorpha, Palaeophycus, Phycosiphon, Planolites, Taenidium, Teichichnus, and Thalassinoides. Three basic types of ichnofabrics have been recognized: Ophiomorpha, Thalassinoides and Phycosiphon, all representing fully marine ichnofacies. The first two of these belong to the Cruziana ichnofacies, indicating the offshore zone, and the third one probably to the Zoophycos ichnofacies indicating a quiet shelfal setting below storm wave base.

Źródło:

Geological Quarterly; 2005, 49, 1; 15--30
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 33.

Tytuł:

Cylindrichnus concentricus Toots in Howard, 1966 (trace fossil) in its type locality, Upper Cretaceous, Wyoming

Autorzy:

Ekdale, A. A.
Harding, S. C.

Powiązania:

https://bibliotekanauki.pl/articles/191694.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

bioturbation
Cretaceous
Cylindrichnus concentricus
type locality
Wyoming

Opis:

Cylindrichnus concentricus is a wide spread trace fossil in shallow marine sedimentary rocks of Mesozoic and Cenozoic age. This paper clarifies the ichnotaxonomy of C. concentricus by of fering an emended diagnosis of the ichnogenus and a new diagnosis of the ichnospecies. The broad, bow-shaped architecture of C. concentricus with two openings at the sediment surface suggests that the trace maker was either a filter-feeding animal that captured suspended food particles from the water column or else a surface deposit feeder that employed tentacles or an eversible pharynx to collect nutritious sediment from the surface around one or both of the burrow openings. Although C. concentricus has been reported in a variety of different sedimentary environments around the world, in its type locality in the Cretaceous of Wyoming the trace fossilis found in low-diversity or monoichnospecific beds that exhibit hummocky cross stratification. This occurrence suggests the burrower’s tolerance (or perhaps preference) for an episodic high-energy hydrodynamic environmentre lated to major storms.

Źródło:

Annales Societatis Geologorum Poloniae; 2015, 85, 3; 427-432
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 34.

Tytuł:

Scaphitid ammonites from the Upper Cretaceous of KwaZulu-Natal and Eastern Cape Province, South Africa

Autorzy:

Kennedy, W. J.
Klinger, H. Ch.

Powiązania:

https://bibliotekanauki.pl/articles/138833.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

scaphitid ammonites
Cretaceous
South Africa
amonity
kreda
Republika Południowej Afryki

Opis:

Scaphitid ammonites are described and illustrated from the Upper Cretaceous of the coastal region of north-eastern South Africa. Scaphites kieslingswaldensis Langenhan and Grundey, 1891, Scaphites manasoaensis Collignon, 1965, and Yezoites concinna sp. nov. occur in the Coniacian part of the St Lucia Formation in northern KwaZulu-Natal. A further Yezoites sp. may also be from this level. Argentoscaphites corrugatus sp. nov. occurs in the Santonian to Lower Campanian Mzamba Formation on the northernmost coast of Eastern Cape Province. Yezoites australis sp. nov. occurs in the Upper Santonian part of the St Lucia and Mzamba formations of these areas, and Scaphites reesidei Collignon, 1969, is recorded from the Lower Campanian part of the Mzamba Formation. The scaphitid assemblage includes species previously described from Western Europe and Madagascar, together with Argentoscaphites, previously known only from Patagonia (and possibly South India). Dimorphism is recognised in Scaphites reesidei, Yezoites concinna sp. nov. and Y. australis sp. nov. Argentoscaphites corrugatus sp. nov. and Yezoites sp. are represented by microconchs only. Dimorphism has not been recognised in Scaphites kieslingswaldensis.

Źródło:

Acta Geologica Polonica; 2013, 63, 4; 527-543
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 35.

Tytuł:

A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica

Autorzy:

Pipo, M.L.
Iglesias, A.
Bodnar, J.

Powiązania:

https://bibliotekanauki.pl/articles/2082189.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Angiospermae
Chloranthales
Chloranthaceae
cambial variant
Campanian
Antarctica
James Ross
Island

Opis:

We sectioned a permineralized stem preserved in marine calcareous concretions from the Campanian (Upper Cretaceous) of James Ross Island, Antarctic Peninsula using the cellulose-acetate peel technique. The material is a slender stem displaying a combination of characters such as: (i) absence of vessels and axial parenchyma, (ii) presence of a cambial variant which produces axial vascular elements in segments (AVES pattern), and (iii) elongated upright ray cells. This character combination allows us to assign this fossil to family Chloranthaceae and to relate it to an extant genus Sarcandra. Consequently we describe Sarcandraxylon sanjosense gen. et sp. nov., representing the first vegetative fossil of Chloranthaceae—a basal angiosperm family with a fossil record extending back into the Early Cretaceous and dominated by pollen grains and a limited number of reproductive mesofossils. Besides doubtfully assigned leaves, there are no reported Cretaceous macrofossils of Chloranthaceae, which hinders our understanding of the overall pattern of morphological evolution for the family. The new fossil constitutes the first fossil occurrence of the Sarcandra clade in high latitudes of Western Gondwana. The particular wood anatomy and small diameter suggest a new plant habit (subshrub) for the physiognomy of the Cretaceous Antarctic floras.

Źródło:

Acta Palaeontologica Polonica; 2020, 65, 2; 261-272
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:

Porosphaera globularis (Phillips, 1829) (Porifera, Calcarea) in the Campanian (Upper Cretaceous) of extra-Carpathian Poland

Autorzy:

Jurkowska, A.
Świerczewska-Gładysz, E.
Dubicka, Z.
Olszewska-Nejbert, D.

Powiązania:

https://bibliotekanauki.pl/articles/138587.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Porosphaera globularis
Calcareous sponges
Campanian
extra-Carpathian Poland
gąbka wapienna
kampan
Karpaty
Polska

Opis:

The stratigraphical distribution of Porosphaera globularis, a common calcareous sponge in the Upper Cretaceous (mostly Campanian and Maastrichtian) of Poland was studied. The presented material, both new and from museum collections, comes from the Campanian of the Miechów Synclinorium, in southern Poland, and from the Lower Campanian of Mielnik in the south-eastern part of the Mazury-Podlasie Homocline, in eastern Poland. The significance of the species in extra-regional correlation, its palaeobiogeography and stratigraphical potential is critically reviewed.

Źródło:

Acta Geologica Polonica; 2015, 65, 1; 121-139
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:

Differential preservation of the Upper Cretaceous ammonoid Anagaudryceras limatum with corrugated shell in Central Hokkaido, Japan

Autorzy:

Wani, R

Powiązania:

https://bibliotekanauki.pl/articles/21872.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Hokkaido
fossil record
Japan
Ammonoidea
Cretaceous
Upper Cretaceous
paleoecology
Anagaudryceras limatum
corrugation
paleontology
ammonoid

Opis:

The taphonomy of the Upper Cretaceous ammonite Anagaudryceras limatum differs from associated ammonites in the same horizon. This differential taphonomy is reconstructed based on fragmentation patterns and structural property of the corrugated shells of their body chamber parts. The characteristic preservation of isolated body chamber parts with corrugations is commonly observed in A. limatum from the upper Turonian of the Oyubari area, central Hokkaido, Japan. This preservation probably results from the differential internal structural properties of the hollow body chamber and septated phragmocone as well as the peculiar corrugation on body chamber of the present species: (1) fracturing along the corrugations against bending force is easier than flat material, because of the concentration of force on the tops or bottoms of corrugations, and (2) high durability against compressive forces. The separated body chamber parts were resistant to being squashed and broke into pieces due to the durability of corrugations against compressive force. The statistic test on the fossil assemblage suggests that selective destruction did not affect the fidelity of species composition and relative abundance of the studied fossil assemblage. Molluscan death assemblages in marine systems consistently show strong fidelity to relative abundances in the live community, suggesting that there was an Anagaudryceras−dominant ammonoid community during the late Turonian in the Oyubari area.

Źródło:

Acta Palaeontologica Polonica; 2007, 52, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:

A monospecific assemblage of terebratulide brachiopods in the Upper Cretaceous seep deposits of Omagari, Hokkaido, Japan

Autorzy:

Kaim, A.
Bitner, M.A.
Jenkins, R.G.
Hikida, Y.

Powiązania:

https://bibliotekanauki.pl/articles/22963.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

terebratulid brachiopod
brachiopod
Upper Cretaceous
Cretaceous
seep deposit
Omagari
Hokkaido
Japan
Brachiopoda
Chlidonophoridae
Eucalathis
Campanian
Mesozoic

Opis:

The Campanian (Upper Cretaceous) seep carbonate at Omagari (Hokkaido, Japan) yields a monospecific association of the terebratulide brachiopod Eucalathis methanophila Bitner sp. nov. The association is the only occurrence of brachiopods known from the post−Early Cretaceous history of chemosynthesis−based communities. Unlike many earlier rhynchonellide−dominated hydrocarbon seep associations—which disappeared in Aptian times—this association is composed of chlidonophorid terebratulides. It is hypothesised here that large rhynchonellide brachiopods have been outcompeted from chemosynthesis−based associations by large chemosymbiotic bivalves (especially lucinids) and that this seep association containing numerous terebratulide brachiopods originated as a result of immigration from the background fauna settling in a seep that lacked numerous large bivalves but offered some hard substrates for brachiopod attachment. Some living chlidonophorids are known to settle around seep/vent localities or more generally in deep−water hard−substrate settings. We review occurrences of brachiopods in chemosynthesis−based associations and show that brachiopods immigrated repeatedly to seep/vent environments. Eucalathis methanophila Bitner sp. nov. represents the oldest and single Mesozoic record of the genus. The new species is similar in ornamentation to three living species, Indo−Pacific E. murrayi, eastern Atlantic E. tuberata, and Caribbean E. cubensis but differs in having a higher beak and wider loop. Additionally the studied species is nearly twice as large as E. tuberata.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:

The internal geometry and lithofacies pattern of the Upper Cretaceous-Danian sequence in the Polish Lowlands

Autorzy:

Leszczyński, K.

Powiązania:

https://bibliotekanauki.pl/articles/2058992.pdf

Data publikacji:

2012

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Upper Cretaceous-Danian sequence
Polish Lowlands
structural and thickness maps
lithofacies pattern

Opis:

The paper presents a set of maps illustrating the internal geometry of the Upper Cretaceous-Danian sedimentary sequence in the Polish Lowlands. Qualitative lithofacies are used for reconstructions with the dominant lithofacies component and accessory components indicated. The following maps are produced: (1) base Upper Cretaceous structural map; (2) Upper Cretaceous (including Danian) thickness map; (3) thickness map of succession K3 (Cenomanian–lower Turonian, excluding the upper Albian cycle K3-I, which is the lowermost cycle of succession K3, but formally belongs to the Lower Cretaceous); (4) succession K4 (upper Turonian–Danian) thickness map. The maps of successions K3 and K4 illustrate the post-inversion geometry of the basin for the pre-inversion (Cenomanian–lower Turonian) and syn-inversion (upper Turonian–Danian) successions. Thickness analysis shows an increasing difference in subsidence rate during the Late Cretaceous between the areas extending on the two sides of the present-day Mid-Polish Swell. Much higher subsidence rates during deposition of succession K4 occurred in the area extending to the SW of the swell. The maximum subsidence zone migrated with time from the Pomeranian and Kujavian segments towards the Kujavian and Lublin segments. The lithofacies pattern is presented in seven maps constructed for individual eustatically and tectonically controlled cycles: K3-II–K3-III (early Cenomanian–early late Cenomanian), K3-IV (latest Cenomanian–early Turonian), K4-I (late Turonian–Coniacian), K4-II (Santonian–earliest Campanian), K4-III (late early Campanian–earliest Maastrichtian), K4-IV–K4-V (late early Maastrichtian–late Maastrichtian) and Pc-I (Danian–?earliest Selandian).

Źródło:

Geological Quarterly; 2012, 56, 2; 363-386
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:

Sauropod diversity in the Upper Cretaceous Nemegt Formation of Mongolia - a possible new specimen of Nemegtosaurus

Autorzy:

Averianov, A.O.
Lopatin, A.V.

Powiązania:

https://bibliotekanauki.pl/articles/945917.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

dinosauria
sauropoda
nemegtosaurus
upper cretaceous
nemegt formation
mongolia

Opis:

Currently, there are two sauropod taxa known from the Upper Cretaceous (Maastrichtian) Nemegt Formation of Gobi Desert, Mongolia: Nemegtosaurus from the Nemegt locality and Opisthocoelicaudia from the Altan Uul IV locality. Both taxa are represented by not overlapping elements (skull and partial postcranial skeleton respectively), which arises question on their possible synonymy. Five articulated sauropod dorsal vertebrae (PIN 3837/P821, dorsals 6–10) were found in 1949 by the Mongolian Expedition of the Academy of Sciences of the USSR at the Nemegt locality. This specimen is similar to Opisthocoelicaudia in having a strong ventral ridge on dorsal centra, a low neural arch which is anteroposteriorly narrowest at the junction with the centrum and widens dorsally, and lack of hyposphene–hypantrum articulations. PIN 3837/P821 differs from Opisthocoelicaudia by having the less dorsoventrally flattened dorsal centra, a shallow ventral concavity of dorsal centra in lateral view, a vertical posterior centrodiapophyseal lamina (pcdl) in dorsals 8 and 9, a postzygodiapophyseal lamina (podl) that roofs the centrodiapophyseal fossa (pocdf), and strongly developed accessory laminae within the parapophyseal centrodiapophyseal fossa (pacdf). The sauropod femora from Nemegt Formation differ from the femur of Opisthocoelicaudia by the medial condyle extending more distally compared with the lateral condyle. Most likely these femora and PIN 3837/P821 belong to Nemegtosaurus, which would make this taxon distinct from Opisthocoelicaudia by discussed characters of dorsal vertebrae and femur

Źródło:

Acta Palaeontologica Polonica; 2019, 64, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

Integrated biostratigraphy and palaeoenvironments of the Upper Cretaceous in the Petrich section (Central Srednogorie Zone, Bulgaria)

Autorzy:

Pavlishina, Polina
Dochev, Docho
Wagreich, Michael
Koukal, Veronika

Powiązania:

https://bibliotekanauki.pl/articles/24024712.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

Upper Cretaceous
campanian
calcareous nannofossil
dinoflagellate cysts
inoceramids
biostratigraphy
palaeoenvironments
górna kreda
kampan
nanoplankton wapienny
cysty bruzdnicowe
inoceramy
biostratygrafia
paleośrodowisko

Opis:

The Upper Cretaceous succession (Coniacian to lowermost Maastrichtian, with focus on the Campanian) at Petrich, Central Srednogorie Zone in Bulgaria, is described and calibrated stratigraphically based on nannofossils, dinoflagellate cysts and inoceramids. The following standard nannofossil zones and subzones are identified: UC10-UC11ab (middle to upper Coniacian), UC11c-UC12-UC13 (uppermost Coniacian to Santonian), UC14a (lowermost Campanian), UC14bTP-UC15cTP (lower Campanian to ‘middle’ Campanian), UC15dTP-UC15eTP (upper Campanian), UC16aTP (of Thibault et al. 2016; upper part of the upper Campanian), and UC16b (Campanian-Maastrichtian boundary). The base of the Campanian is defined by the FO of Broinsonia parca parca (Stradner) Bukry, 1969 and Calculites obscurus (Deflandre) Prins and Sissingh in Sissingh, 1977 (a morphotype with a wide central longitudinal suture). The Areoligera coronata dinoflagellate cyst Zone (upper lower Campanian to upper upper Campanian) is identified, corresponding to the UC14bTP-UC16aTP nannofossil subzones. The inoceramid assemblage indicates the ‘Inoceramus’ azerbaydjanensis-‘Inoceramus’ vorhelmensis Zone, correlated within the interval of nannofossil subzones UC15dTP-UC15eTP. The composition of the dinoflagellate cyst assemblages and palynofacies pattern suggest normal marine, oxic conditions and low nutrient availability within a distal shelf to open marine depositional environment during the Campanian.

Źródło:

Acta Geologica Polonica; 2023, 73, 1; 33--62
0001-5709

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Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:

Ichnology of Upper Cretaceous–lower Palaeogene deep-sea deposits in the Haymana Basin of Central Anatolia

Autorzy:

Demircan, Huriye
Görmüş, Muhittin

Powiązania:

https://bibliotekanauki.pl/articles/1836251.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

trace fossils
benthic foraminifera
Campanian
Paleocene
Turkey

Opis:

Upper Cretaceous to lower Palaeogene carbonate and siliciclastic deposits that crop out widely in the Haymana and Polatlı districts (Ankara Province) of the Haymana Basin (Central Anatolia) are rich in larger benthic foraminifera, various macrofossils and ichnofossils. The ichnofossils of the Haymana and Yeşilyurt formations were studied at five localities. The Upper Cretaceous siliciclastics of the Haymana Formation contain moderately diverse trace fossils, belonging to the deep-sea Nereites ichnofacies. The Paleocene siliciclastic and carbonate deposits of the Yeşilyurt Formation comprise similar trace fossils, which do not show significant changes in comparison to the Haymana Formation. This indicates that the K-Pg boundary extinction event did not affect the ichnofauna with any longer consequences. The Upper Cretaceous coarser, siliciclastic deposits of the Haymana and Beyobası formations are rich in shallow-marine, larger benthic foraminifera, including species of Orbitoides, Omphalocyclus, Siderolites, Hellenocyclina, and Loftusia, whereas fine siliciclastic deposits contain abundant planktonic, open-marine foraminifera, such as Globotruncana and Heterohelix. Palaeogene siliciclastic to carbonate deposits of the Kartal, Yeşilyurt and Çaldağ formations are rich in the larger, benthic foraminifera Nummulites, Discocyclina, Assilina and Alveolina. The larger foraminifers have been redeposited from nearby, shallow-marine parts of the basin.

Źródło:

Annales Societatis Geologorum Poloniae; 2020, 90, 4; 463-493
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:

Turonian-Coniacian (Upper Cretaceous) of the Babadag Basin (North Dobrogea, Romania) : integrated biostratigraphy and microfacies succession

Autorzy:

Lodowski, Damian Gerard
Walaszczyk, Ireneusz Piotr
Grădinaru, Eugen

Powiązania:

https://bibliotekanauki.pl/articles/2058617.pdf

Data publikacji:

2019

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

microfacies
petrology
inoceramids
ammonites
foraminifera
palaeoenvironment

Opis:

The Upper Turonian to Middle Coniacian (Upper Cretaceous) succession of the Babadag Basin (North Dobrogea, Romania) constitutes an apparently continuous fossiliferous carbonate succession. The presence of moderately rich inoceramid, ammonite and foraminiferal assemblages allows for the application of a precise biostratigraphic subdivision. The palaeoenvironmental conditions and evolution of the Babadag Basin during the Late Turonian-Middle Coniacian are inferred using microfacies analysis and foraminiferal spectra. Together, these suggest the Turonian-Coniacian Badabag Basin reflects relatively shallow-water conditions in a near-shore environment, punctuated by two regression events in the Late Turonian and in the Middle Coniacian.

Źródło:

Geological Quarterly; 2019, 63, 1; 39--64
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:

Upper Cretaceous (Maastrichtian) charophyte gyrogonites from the Lameta Formation of Jabalpur, Central India: palaeobiogeographic and palaeoecological implications

Autorzy:

Khosla, A.

Powiązania:

https://bibliotekanauki.pl/articles/138589.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

charophyta
palaeobotany
palaeogeography
biogeography
Cretaceous-Paleogene boundary
Charophyta
paleobotanika
paleogeografia
biogeografia
kreda
paleogen
granica

Opis:

A charophyte gyrogonite assemblage consisting of Platychara cf. sahnii, Nemegtichara grambastii and Microchara sp. is reported herein from two localities (Bara Simla Hill and Chui Hill sections) of the Lameta Formation at Jabalpur. The Lameta Formation locally underlying the Deccan traps has been shown to be pedogenically modified alluvial plain deposits containing one of the most extensive dinosaur nesting sites in the world. They are associated with dinosaur bones and freshwater ostracod assemblages that suggest a Late Cretaceous (Maastrichtian) age. This is the first detailed systematic account of charophyte gyrogonites from the Lameta Formation. This charophyte assemblage is compatible with the biostratigraphic attribution provided by the ostracods. From a biogeographic viewpoint, it exhibits considerable similarity to other infratrappean assemblages of the Nand, Dongargaon, and Dhamni-Pavna sections (Maharashtra), and some intertrappean assemblages of Kora in Gujarat, Rangapur in Andhra Pradesh and Gurmatkal in South India. Globally, the genus Microchara is well distributed throughout Eurasia, whereas the genus Platychara occurs richly in the Upper Cretaceous deposits of Europe, Asia, America and Africa. However, at the specific level, Platychara cf. sahnii shows close affinities with charophytes from the Maastrichtian of Iran whilst Nemegtichara grambastii shows distinct affinities with two species of Early Palaeogene deposits of China and Mongolia. The presence of charophyte gyrogonites in the Lameta sediments is attributed to local lacustrine and palustrine conditions within a flood plain environment.

Źródło:

Acta Geologica Polonica; 2014, 64, 3; 311-323
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:

Guettardiscyphia zitti sp. n. - a remarkable hexactinellid sponge from the Lower Turonian of the Bohemian Cretaceous Basin

Autorzy:

Vodrážka, R.

Powiązania:

https://bibliotekanauki.pl/articles/2060595.pdf

Data publikacji:

2017

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Upper Cretaceous
Turonian
hexactinellid sponge
Guettardiscyphia

Opis:

This paper describes a new hexactinosidan hexactinellid Guettardiscyphia zitti sp. n. on the basis of a detailed study of 279 specimens from 12 localities in the southern part of the Bohemian Cretaceous Basin. All the studied material comes from the basal Bílá Hora Formation (Lower Turonian). The geology and palaeontology of the sponge-bearing strata at studied locations exhibit identical palaeoenvironmental settings: 1 - transgressive character of sediments with low sedimentation rates, 2 - presence of submarine swells formed by crystalline basement, 3 - hemipelagic sedimentation below the storm-wave base, and 4 - the presence of proliferating diverse sponge faunas with subordinate accompanying macrofaunal remains.

Źródło:

Geological Quarterly; 2017, 61, 3; 632--640
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

Turonian (Upper Cretaceous) inoceramid bivalves of the genus Mytiloides from the Sredna Gora Mountains, north-western Bulgaria

Autorzy:

Dochev, D.

Powiązania:

https://bibliotekanauki.pl/articles/139314.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Turonian
inoceramid bivalves
taxonomy
Mytiloides
biostratigraphy
turon
małże
taksonomia
biostratygrafia

Opis:

The inoceramid bivalves of the genus Mytiloides, from the Turonian (Upper Cretaceous) of the Sredna Gora Mts (north-western Bulgaria), are studied. The material comes from three sections: Izvor, Filipovtsi, and Vrabchov dol. Eight species are described taxonomically, with one left in open nomenclature: M. cf. mytiloides (Mantell, 1822), M. mytiloidiformis (Tröger, 1967), M. incertus (Jimbo, 1894), M. scupini (Heinz, 1930), M. herbichi (Atabekian, 1969), M. striatoconcentricus (Gümbel, 1868), M. labiatoidiformis (Tröger, 1967) and M. carpathicus (Simionescu, 1899). Mytiloides incertus and Mytiloides scupini are index species for the eponymous Upper Turonian inoceramid biozones

Źródło:

Acta Geologica Polonica; 2015, 65, 1; 101-119
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:

Revision of Hamites wernickei Wollemann, 1902 (Cephalopoda, Ancyloceratina) from the classic Lüneburg section (Upper Cretaceous, northern Germany)

Autorzy:

Niebuhr, B.
Jagt, J. W. M.

Powiązania:

https://bibliotekanauki.pl/articles/139004.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

campanian
ammonites
Nostoceras
Oxybeloceras
taxonomy
Europe
kampan
amonity
systematyka
Europa

Opis:

A re-examination of heteromorph ammonites of late Campanian age from the Zeltberg section at Lüneburg has demonstrated that the type series of Hamites wernickei in fact comprises two different species that are here assigned to the nostoceratid Nostoceras Hyatt, 1894 and the polyptychoceratid Oxybeloceras Hyatt, 1900. Nostoceras (Didymoceras) wernickei (Wollemann, 1902) comb. nov., to which three of the four specimens that were described and illustrated by Wollemann (1902) belong, has irregularities of ribbing and tuberculation and changes its direction of growth at the transition from the helicoidal whorls to the hook, which is a typical feature of members of the subfamily Nostoceratinae. Torsion of body chambers is not developed in hairpin-shaped ammonite species, which means that the species name wernickei is no longer available for such polyptychoceratine diplomoceratids. Consequently, the fourth specimen figured and assigned to Hamites wernickei by Wollemann (1902) is here transferred to Oxybeloceras and considered conspecific to material from the Hannover area (Lehrte West Syncline) as O. aff. crassum (Whitfield, 1877). In addition to the "Heteroceras-Schicht des Mucronaten-Senons" of Lüneburg (bipunctatum /roemeri Zone, upper upper Campanian), the geographic range of N. (D.) wernickei probably includes Upper Austria, Tunisia and the Donbass region, while O. aff. crassum is known from the Hannover area (northern Germany), southern France, northern Spain and Upper Austria.

Źródło:

Acta Geologica Polonica; 2016, 66, 4; 627-644
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:

New data on heavy minerals from the Upper Cretaceous-Paleogene flysch of the Beskid Śląski Mts. (Polish Carpathians)

Autorzy:

Grzebyk, J.
Leszczyński, S.

Powiązania:

https://bibliotekanauki.pl/articles/2058926.pdf

Data publikacji:

2006

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Polska
Carpathians
Paleogene
Upper Cretaceous
heavy minerals
provenance

Opis:

The types, abundance and origin of non-opaque heavy minerals from17 samples of sandstones and granule conglomerates of the Godula Beds, Upper Istebna Sandstone, Ciężkowice and Cergowa Sandstone (Upper Cretaceous–Paleogene) of the Beskid Śląski Mts. are described in this study. The descriptions are based on standard optical petrographic investigations and on scanning electronmicroscope (including electron microprobe) analysis. Garnet, rutile, zircon and tourmaline are the most common types of heavyminerals. Monazite and apatite occur subordinately, whereas epidote and spinel are sporadic. The heavy minerals from the Middle and Upper Godula Beds and the Upper Istebna Sandstone indicate original derivation mainly from metamorphic rocks of granulite and partly eclogite facies. Metasediments were significant constituents, with subordinate granitoids and hornfelses. Granitoids and corresponding pegmatites and aplites, as well as metapelites and metapsammites, appear to be the primary crystalline parent rocks of the Lower Godula Beds and the Ciężkowice Sandstone. Garnet-mica schists with subordinate granitoids and their pegmatites are interpreted as the main crystalline parent rocks of the Cergowa Sandstone. Sporadic chromian spinels and chromian pyrope indicate derivation from mafic and ultramafic rocks. Co-occurrence of rounded and fresh unabraded grains (sometimes euhedral) suggests a mixed provenance for the clastic material, both from crystalline and older sedimentary rocks.

Źródło:

Geological Quarterly; 2006, 50, 2; 265-280
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

Depositional architecture of the Upper Cretaceous succession in central Poland (Grudziądz-Polik area) based on regional seismic data

Autorzy:

Stachowska, Aleksandra
Krzywiec, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/2059590.pdf

Data publikacji:

2021

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

central Poland
depositional architecture
layer-cake stratigraphy
regional seismic data
seismic stratigraphy
Upper Cretaceous.

Opis:

Interpretation of the regional high-resolution seismic data of the PolandSPANTM survey in the Grudziądz-Polik area revealed a new depositional architecture of the Upper Cretaceous succession that differs substantially from the previously assumed layer-cake model, commonly applied to Permian-Mesozoic sequences. A previously unrecognized regional unconformity, dividing the Upper Cretaceous succession into two units characterized by very different internal geometries, was identified and mapped. The lower unit, with a generally layer-cake internal pattern, is overlain by an upper unit composed of a regionally low-angle succession that pinches out toward the south. This newly revealed regional pattern remained unrecognized in previous regional compilations based on borehole data, which suggested that a layer-cake depositional architecture prevailed throughout the entire Upper Cretaceous. This new image of Upper Cretaceous depositional patterns has far-reaching consequences for understanding of the evolution of the Polish Basin in the Late Cretaceous, including its subsidence and burial history, deposition, and tectonic development. A re-evaluation of the chronostratigraphy of the Upper Cretaceous of the Polish Basin is needed to temporally constrain the succession of sedimentary and tectonic events revealed here.

Źródło:

Geological Quarterly; 2021, 65, 2; 65: 21
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

A new soft-shelled trionychid turtle of the genus Khunnuchelys from the Upper Cretaceous Bostobe Formation of Kazakhstan

Autorzy:

Danilov, I.G.
Vitek, N.S.
Averianov, A.O.
Glinskiy, V.N.

Powiązania:

https://bibliotekanauki.pl/articles/945569.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

paleontology
new species
soft-shelled turtle
Testudines
Trionychidae
Trionychia
Khunnuchelys lophorhothon
Upper Cretaceous
Cretaceous
Bostobe Formation
Kazakhstan

Opis:

Previously unpublished trionychid turtle material from the Upper Cretaceous (Santonian–lower Campanian) Bostobe Formation from the Baybishe and Baykhozha localities in Kazakhstan is described. The material represents a new species of Khunnuchelys, a large, skull-based clade of Cretaceous Asian trionychids. Concordant with other partial skulls and fragmentary specimens described previously, Khunnuchelys lophorhothon sp. nov. has the unusual features of a beaklike maxilla and a vaulted, expanded triturating surface. In addition, the specimens reveal novel features including a constricted skull roof. Although estimates of the length of the carapace differ depending on estimation method, the skull belonged to a turtle of comparable size to the shell-based species “Trionyx” kansaiensis from the same formation. It is likely that K. lophorhothon and “T.” kansaiensis are synonymous, but this can be proved only by a find of associated skull and shell material.

Źródło:

Acta Palaeontologica Polonica; 2015, 60, 1; 155-161
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 51.

Tytuł:

Facies and integrated stratigraphy of the Upper Turonian (Upper Cretaceous) Grossberg Formation south of Regensburg (Bavaria, southern Germany)

Autorzy:

Niebuhr, B.
Richardt, N.
Wilmsen, M.

Powiązania:

https://bibliotekanauki.pl/articles/139052.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

kreda
środowisko depozycyjne
turon
zintegrowana stratygrafia
Danubian Cretaceous Group
depositional environment
Grossberg Formation
integrated stratigraphy
Sedimentary unconformities
Turonian

Opis:

The Upper Turonian Grossberg Formation of the Regensburg area (Danubian Cretaceous Group, Bavaria, southern Germany) has a mean thickness of 20-25 m and consists of sandy bioclastic calcarenites and calcareous sandstones which are rich in bryozoans, serpulids and bivalves (oysters, rudists, inoceramids). Eight facies types have been recognized that characterize deposition on a southward dipping homoclinal ramp: the inner ramp sub-environment was characterized by high-energy sandwave deposits (sandy bioclastic rud- and grainstones, bioclastic sandstones) with sheltered inter-shoal areas. In mid-ramp settings, bioturbated, glauconitic, calcareous sand- and siltstones as well as bioturbated, bioclastic wacke- and packstones predominate. The carbonate grain association of the Grossberg Formation describes a temperate bryomol facies with indicators of warm-water influences. An inferred surplus of land-derived nutrients resulted in eutrophic conditions and favoured the heterozoan communities of the Grossberg Ramp. Carbon stable isotope geochemistry cannot significantly contribute to the stratigraphic calibration of the Grossberg Formation due to the depleted and trendless bulk-rock [delta^13]C values, probably resulting from a shallow-water aquafacies with depleted [delta^13]C DIC values and low [delta^13]C values of syndepositional and early diagenetic carbonate phases. However, strongly enriched skeletal calcite [delta^13]C values support a correlation of the Grossberg Formation with the mid-Late Turonian positive Hitch Wood isotope event (Hyphantoceras Event of northern Germany). This interpretation is supported by biostratigraphic data and a range from the Mytiloides striatoconcentricus Zone into the lower My. scupini Zone is indicated by inoceramid bivalves. Both the base and top of the Grossberg Formation are characterized by unconformities. Sequence boundary SB Tu 4 at the base is a major regional erosion surface (erosional truncation of the underlying Kagerhoh Formation in the Regensburg area, fluvial incision at the base of the Seugast Member of the Roding Formation in the Bodenwohr area towards the north and northeast). It is suggested that this unconformity corresponds to a major sea-level drop recognized in many other Cretaceous basins below the Hitch Wood or Hyphantoceras Event. The transgression and highstand of the Grossberg Formation is concomitant to the deposition of the fluvial Seugast Member and the onlap of the marginal-marine. Veldensteiner Sandstein. onto the Frankische Alb. The unconformity at the top of the Grossberg Formation (late Late Turonian SB Tu 5) is indicated by a ferruginous firm-/ hardground and an underlying zone of strongly depleted [delta^13]C values. The abrupt superposition by deeper marine marls of the lower Hellkofen Formation (uppermost Turonian.Lower Coniacian) may be connected with inversion tectonics at the southwestern margin of the Bohemian Massif.

Źródło:

Acta Geologica Polonica; 2012, 62, 4; 595-615
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 52.

Tytuł:

Provenance of Upper Cretaceous quartz-rich sandstones from the North Sudetic Synclinorium, SW Poland: constraints from detrital tourmaline

Autorzy:

Biernacka, J.

Powiązania:

https://bibliotekanauki.pl/articles/2058994.pdf

Data publikacji:

2012

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

quartz arenites
provenance
heavy minerals
tourmaline
Sudetes
Late Cretaceous
inversion

Opis:

Upper Cretaceous quartz arenites that fill the North Sudetic Synclinorium on the northern periphery of the Variscan Bohemian Massif show high compositional but low textural maturity. They have been interpreted for years as derived largely from nearby granite plutons, i.e. as first-cycle sediments. A different provenance was revealed on the basis of a combined light and heavy mineral analysis, and particularly a detrital tourmaline study, given that tourmaline is a sensitive indicator of granitic/metamorphic/sedimentary (multi-recycling) origin. Cenomanian, Turonian, Coniacian and Santonian sandstones contain abundant angular tourmaline grains, together with zircon and rutile, and subordinately staurolite, garnet, anatase, kyanite, sillimanite and monazite. The successive – Cenomanian to Santonian – tourmaline populations are similar with regard to shape, colour and chemical composition. The latter points unambiguously to various metamorphic rocks with a predominant group of Al-rich metapelites (Al-rich, F-poor dravite). It is concluded that, in the Late Cretaceous, large Sudetic granite plutons such as the Karkonosze and Strzegom–Sobótka massifs were not exposed but were buried under a thick siliciclastic cover. These results coupled with published apatite fission-track data from the granitic Karkonosze Pluton and the gneissic/migmatitic Góry Sowie Massif reveal that Late Cretaceous quartz arenites of the North Sudetic Synclinorium reflect gradual exhumation of the surrounding massifs, but do not record the final exposure of crystalline rocks. Since the latest Turonian, this exhumation corresponded to the Late Cretaceous inversion episode in Central Europe. The textural immaturity of Upper Cretaceous sandstones is misleading in terms of their recycled origin, and it is inherited from immature clastic source rocks.

Źródło:

Geological Quarterly; 2012, 56, 2; 333-344
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 53.

Tytuł:

Albanerpetontid amphibians from the Upper Cretaceous of Middle Asia
Plazy z rodziny Albanerpetontidae z gornej kredy Azji Srodkowej

Autorzy:

Gardner, J D
Averianov, A O

Powiązania:

https://bibliotekanauki.pl/articles/20615.pdf

Data publikacji:

1998

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Albanerpetontidae
fauna kopalna
albanerpetodonty
Celtedens
kreda
zuchwa
Albanerpeton
Uzbekistan
paleontologia
plazy
Azja Srodkowa

Opis:

We review the fossil record of Asian albanerpetontids. The three dentaries previously attributed to the two species of Nukusurus Nessov, 1981 (lower Cenomanian and Coniacian, Uzbekistan) are from albanerpetontids, but none are distinctive below the familial level. We thus designate the names Nukusurus, N. insuetus Nessov, 1981, and N. sodalis Nessov, 1997 as nomina dubia within the Albanerpetontidae. Two dentaries (lower Cenomanian, Uzbekistan) described herein for the first time supplement the known record of Asian albanerpetontids. The holotype atlas and only specimen of the supposed albanerpetontid Bishara backa Nessov, 1997 (upper Santonian-?Campanian, Kazakhstan) is shown to be from a salamander, not an albanerpetontid. Our study recognizes Albanerpeton (Cretaceous-Miocene, North America and Europe) and Celtedens (Middle Jurassic-Lower Cretaceous, Europe) as the only valid albanerpetontid genera. Limited evidence favors one or more dispersals from Europe or Norttr America to Asia in the medial Cretaceous as the major biogeographic event in the history of Asian albanerpetontids.
Rewizja azjatyckiego zapisu kopalnego albanerpetontydów pozwoliła potwierdzić obecność tej grupy na podstawie dwóch żuchw z dolnego cenomanu Uzbekistanu, opisanych tu po raz pierwszy, oraz trzech okazów opisanych wcześniej przez Nesowa z dolnego cenomanu i koniaku Uzbekistanu. Materiał nie wykazuje jednak cech diagnostycznych pozwalających go określić poniżej szczebla rodzajowego. Dlatego nazwy Nukusurus, N. insuetus Nessov, 1981 i N. sodalis Nessov, 1997 wypada uznać za nomina dubia. Holotyp domniemanego albanerpetontyda Bishara backa Nessov, 1997 (górny santon-?kampan Kazachstanu) - pojedynczy dźwigacz - należy natomiast do salamandry, a nie albanerpetontyda. Tak więc jedynymi ważnymi rodzajami albanerpetontydów pozostają Albanerpeton (kreda-miocen, Ameryka Północna i Europa) oraz Celtedens (środkowa jura-dolna kreda, Europa). Na podstawie ograniczonego materiału kopalnego można przypuszczać, że w połowie kredy doszło do jednorazowego lub kilkakrotnego zasiedlenia Azji przez albanerpetontydy z Europy lub Ameryki Północnej.

Źródło:

Acta Palaeontologica Polonica; 1998, 43, 3; 453-476
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 54.

Tytuł:

Encrustation of inarticulate brachiopods on scaphitid ammonites and inoceramid bivalves from the Upper Cretaceous U. S. Western Interior

Autorzy:

Landman, N. H.
Slattery, J. S.
Harries, P. J.

Powiązania:

https://bibliotekanauki.pl/articles/138917.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

inarticulate brachiopods
Pierre Shale
Maastrichtian
inoceramids
ammonites
encrustation
ramienionogi
mastrycht
inoceramy
amonity
nawarstwianie

Opis:

The inarticulate brachiopod Discinisca is a rare faunal element in the Upper Cretaceous of the U.S. Western Interior. We report two occurrences of encrustation of Discinisca on a scaphitid ammonite (scaphite) and several inoceramids from the lower Maastrichtian Baculites baculus/Endocostea typica Biozones of the Pierre Shale at two localities. Six specimens of Discinisca are present on a single specimen of Hoploscaphites crassus from eastcentral Montana. They occur along the furrow at the mature apertural margin. Because the brachiopods are restricted to the margin and do not occur on the rest of the shell, it is likely that they encrusted the ammonite during its lifetime. If so, this implies that the soft body of the scaphite did not cover the outside surface of the aperture, leaving this area vulnerable to epizoan attachment. A total of 13 specimens of Discinisca are also present on four specimens of Cataceramus? barabini from east-central Wyoming. The brachiopods occur in crevices on the outside of the shells and may have encrusted the inoceramids after their death as the shells began to break down and delaminate, resulting from the decomposition of the organic matrix holding them together. Based on the faunal assemblages at both localities, the presence of Discinisca may indicate environments with either low oxygen levels and/or few predators or competitors.

Źródło:

Acta Geologica Polonica; 2016, 66, 4; 645-662
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 55.

Tytuł:

An extended range of the multituberculate Kryptobaatar and distribution of mammals in the Upper Cretaceous of the Gobi Desert

Autorzy:

Kielan-Jaworowska, Z
Hurum, J.H.
Badamgarav, D.

Powiązania:

https://bibliotekanauki.pl/articles/21961.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

multituberculate
stratigraphy
mammal
Gobi Desert
Cretaceous
Upper Cretaceous
Mammalia
Deltatheroida
Kryptobaatar
distribution
paleontology

Opis:

The Late Cretaceous multituberculate mammal Kryptobaatar dashzevegi Kielan−Jaworowska, 1970 is the most common mammalian taxon in the Upper Cretaceous (?lower Campanian) rocks of the Djadokhta Formation at Bayan Zag¹ (= Bayn Dzak) and Tögrög (= Toogreek), and in the beds of Ukhaa Tolgod in the Gobi Desert. Kryptobaataris also common in the Bayan Mandahu Formation (equivalent of the Djadokhta Formation), Inner Mongolia, China, represented there by K. mandahuensis. Kryptobaatar has not been reported as yet from the younger (?upper Campanian) Baruungoyot Formation nor from its stratigraphic equivalents, the red beds of Hermiin Tsav (= Khermeen Tsav). In this paper we report the discovery of an incomplete skull of Kryptobaatar dashzevegi at Hermiin Tsav I. It is the second mammal species common to the Djadokhta and Baruungoyot Formations (the first being Deltatheridium pretrituberculare). We provide a corrected list of mammals found in the Late Cretaceous localities of the Gobi Desert, and we argue (albeit inconclusively), that mammal evidence shows that the Ukhaa Tolgod beds might be closer in time of deposition to the Djadokhta Formation than to that of the Baruungoyot Formation.

Źródło:

Acta Palaeontologica Polonica; 2003, 48, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 56.

Tytuł:

A revised inoceramid biozonation for the Upper Cretaceous based on high-resolution carbon isotope stratigraphy in northwestern Hokkaido, Japan

Autorzy:

Hayakawa, T.
Hirano, H.

Powiązania:

https://bibliotekanauki.pl/articles/139392.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

carbon isotope stratigraphy
inoceramid biozones
Yezo Group
Upper Cretaceous
Hokkaido
Japan
stratygrafia izotopowa węgla
górna kreda
Japonia

Opis:

Biostratigraphic correlations of inoceramid bivalves between the North Pacific and Euramerican provinces have been difficult because the inoceramid biostratigraphy of the Japanese strata has been based on endemic species of the northwest Pacific. In this study, carbon stable isotope fluctuations of terrestrial organic matter are assembled for the Upper Cretaceous Yezo Group in the Haboro and Obira areas, Hokkaido, Japan, in order to revise the chronology of the inoceramid biozonation in Japan. The carbon isotope curves are correlated with those of marine carbonates in English and German sections with the aid of age-diagnostic taxa. According to the correlations of the carbon isotope curves, 11 isotope events are recognised in the sections studied. As a result of these correlations, the chronology of the inoceramid biozones of the Northwest Pacific has been considerably revised. The revised inoceramid biozones suggest that the timing of the origination and extinction of the inoceramids in the North Pacific biotic province is different from the stage/substage boundaries defined by inoceramids, as used in Europe and North America.

Źródło:

Acta Geologica Polonica; 2013, 63, 2; 239-263
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 57.

Tytuł:

Plectoeratidus subarcticus, n.gen., n.sp., a new agglutinated foraminifer from the Upper Cretaceous of the western Barents Sea

Autorzy:

Kaminski, M. A.
Setoyama, E.
Tyszka, J.

Powiązania:

https://bibliotekanauki.pl/articles/191460.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

foraminifera
Late Cretaceous
new genus
new species
biometrics

Opis:

We describe the new foraminiferal genus and species Plectoeratidus subarcticus n.gen. n.sp., from the Upper Cretaceous deep-water deposits of the Kviting and Kveite formations in the western Barents Sea. The genus is characterised by its planispiral-biserial-uniserial chamber arrangement, terminal aperture and lateral compre- ssion. The biometric analysis of test ontogenesis has been applied to document its dimorphism attributed to megalospheric and microspheric generations. This taxon may represent an evolutionary transition between the Cretaceous genera Spiroplectammina or Bolivinopsis and the Cenozoic genus Eratidus. The taxon appears to be endemic to the flysch-type agglutinated foraminiferal assemblages in the Norwegian Sea area.

Źródło:

Annales Societatis Geologorum Poloniae; 2009, 79, No 2; 141-146
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 58.

Tytuł:

Inoceramid and foraminiferal record and biozonation of the Turonian and Coniacian (Upper Cretaceous) of the Mangyshlak Mts., western Kazakhstan

Autorzy:

Walaszczyk, I.
Kopaevich, L. F.
Beniamovski, V. N.

Powiązania:

https://bibliotekanauki.pl/articles/138812.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Cretaceous
Turonian
Coniacian
Mangyshlak
biostratigraphy
Inoceramid bivalves
Foraminifers
correlation
North European biogeographic Province
kreda
turon
koniak
Mangystau
biostratygrafia
małże
otwornice
korelacja
Europa Północna
prowincja
biogeografia

Opis:

The Turonian and Coniacian (Upper Cretaceous) of the Mangyshlak Mts., western Kazakhstan, yielded a rich and relatively complete inoceramid bivalve record. The faunas and their succession correspond to those known from central and eastern Europe, allowing the zonation established in the latter areas to be applied in a virtually identical form. The gaps in the record of the group in Mangyshlak stem from the regional hiatuses in the geological record in the area and do not reflect any biogeographical differences between eastern and central-western Europe. Planktonic foraminifera are rare. Four successive interval range zones can be distinguished: in ascending stratigraphic order, the Helvetoglobotrunaca helvetica, Marginotruncaca pseudolinneiana, Marginotruncana coronata, and Concavotruncana concavata zones. Their correlation with the inoceramid zonation and, consequently, with the chronostratigraphic scheme, is demonstrated. The zonation and chronostratigraphic subdivision as applied in Mangyshlak may easily be applied to other areas of the peri-Caspian region (Caucasus, Tuarkyr, Kopet-Dagh, SE margin of the East-European Craton).

Źródło:

Acta Geologica Polonica; 2013, 63, 4; 469-487
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 59.

Tytuł:

Trace fossils and depositional environments of the middle Turonian sandstones in the Upper Nysa Kłodzka Graben (Sudetes, Poland) revisited

Autorzy:

Chrząstek, Alina
Nowicka, Nadia

Powiązania:

https://bibliotekanauki.pl/articles/2058734.pdf

Data publikacji:

2021

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

ichnology
trace fossils
Upper Cretaceous
Sudetes
palaeoenvironment
shoreface

Opis:

We provide the first reports of some rare trace fossils from the middle Turonian (Upper Cretaceous) of the Sudety Mountains (SW Poland, Upper Nysa Kłodzka Graben, Długopole Górne Quarry). These include burrows ?Ancorichnus isp., Asterosoma cf. ludwigae Schlirf, 2000, Asterosoma isp., cf. Phycodes isp., Dactyloidites ottoi (Geinitz, 1849), Funalichnus strangulatus (Fritsch, 1883), Phycodes cf. palmatus Hall, 1852, cf. Phycodes, Phycosiphon incertum Fischer-Ooster, 1858, ?Phycosiphon isp., Planolites beverleyensis (Billings, 1862) and borings Entobia isp. Some body fossils, bivalves ?Brachidontes sp., Lima canalifera Goldfuss, 1836, Pinna (Pinna) cretacea (Schlotheim, 1813) and Rhynchostreon suborbiculatum (Lamarck, 1801) are also reported. The trace fossil assemblage indicates a distal Skolithos ichnofacies and proximal Cruziana ichnofacies, which characterize a proximal and distal lower shoreface setting respectively. Sedimentation of the middle Turonian sandstones took place in a shallow epicontinental sea of normal salinity and a soft substrate, which was well-oxygenated under low-moderate hydrodynamic conditions. The presence of the oyster Rhynchostreon in the deposits studied suggests the influence of a warm Tethys Ocean.

Źródło:

Geological Quarterly; 2021, 65, 1; 10
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 60.

Tytuł:

Hexactinellid sponges from the Santonian deposits of the Kraków area (Southern Poland)

Autorzy:

Świerczewska-Gładysz, E

Powiązania:

https://bibliotekanauki.pl/articles/191893.pdf

Data publikacji:

2010

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

sponges
Hexactinosida
Lychniscosida
taxonomy
Upper Cretaceous
southern Poland

Opis:

Hexactinellid sponges are extremely abundant in the basal sequence of the Santonian of the Kraków region. This is the only known area in Poland where Santonian deposits with sponges are exposed. The studied sponges are redeposited and probably represent a Santonian or/and Coniacian assemblage. They inhabited a quiet, deeper part of the epicontinental sea that covered the southern part of Poland in Late Cretaceous times. This paper is a taxonomic revision of sponges collected from this region by the late Prof. J. Małecki. Based on existing old collections and newly collected material comprising 1020 specimens, 34 species have been described, including 14 belonging to the Hexactinosida and 20 to the Lychniscosida. All sponge species occurring in the Santonian succession of the Kraków area are also known from various Late Cretaceous sponge assemblages of Europe. Five species described, i.e. Eurete halli (Schrammen), Lefroyella favoidea Schrammen, Spirolophia tortuosa (Roemer), Coeloptychium lobatum Goldfuss, and Wollemannia araneosa Schrammen have not been so far noted in pre-Campanian deposits. The examined assemblage is particularly similar to the sponge fauna from the Middle Coniacian - Middle Santonian deposits of England and from the Lower Santonian of Russia (Saratov area).

Źródło:

Annales Societatis Geologorum Poloniae; 2010, 80, No 3; 253-284
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 61.

Tytuł:

Bioturbation structures of the Kropivnik Fucoid Marls (Campanian-lower Maastrichtian) of the Huwniki-Rybotycze area (Polish Carpathians)

Autorzy:

Leszczyński, S.

Powiązania:

https://bibliotekanauki.pl/articles/2058753.pdf

Data publikacji:

2004

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Polska
Carpathians
Upper Cretaceous
marlstone
flysch
trace fossils

Opis:

The Kropivnik Fucoid Marls of the Polish Outer Carpathians contain numerous bioturbation structures, and comprise thin-bedded sandstones, hard and soft marlstones and muddy to clayey, mainly turbiditic shales. Comparison of three sections elucidated the stratigraphic and sedimentological controls on the distribution of the bioturbation structures, which are most common on the soles of sandstone beds, and within and on the tops of beds of hard marlstone overlain by shale. Most of the bioturbation structures are taxonomically undeterminable. Nevertheless, twenty seven ichnospecies, including one new ichnospecies (Taenidium recurvum), and seven forms of trace fossils of unknown taxonomic affinity were recognised. Most ichnotaxa were observed as individual specimens. Irregular structures apparently formed by the squashing of burrows filled with fluidised fill, called here turbidichnia, are quite common in some marlstone beds in the lower part of the succession. Planolites beverleyensis and Halopoa imbricata are the most frequent trace fossils on the lower surfaces of sandstone beds. Chondrites intricatus, Planolites beverleyensis and Thalassinoides suevicus represent the most common taxa in hard marlstones. Endoreliefs of Scolicia isp. are quite frequent in the top parts of marlstone beds in some parts of the succession. Other ichnotaxa were found either rarely or as single specimens only. The burrowing depth, reaching 15 cm below the tops of normally-graded rhythmic units, together with the relatively rich trace fossil assemblage and common occurrence of Planolites and Thalassinoides, is interpreted as indicating fully oxic conditions at the bottom of the sedimentary basin.

Źródło:

Geological Quarterly; 2004, 48, 1; 35--60
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 62.

Tytuł:

The Upper Cretaceous variegated shales in the Ropianka Formation of the Magura Nappe (Outer Carpathians) : age and lithostratigraphic position

Autorzy:

Waśkowska, Anna
Szczęch, Mateusz

Powiązania:

https://bibliotekanauki.pl/articles/31342966.pdf

Data publikacji:

2023

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Campanian-Maastrichtian
red beds
lithostratigraphy
biostratigraphy
foraminifera

Opis:

The lithological characteristics and age analysis of the variegated Farony Shale are presented for the first time. The Farony Shale occurs in the Lubomierz and Rabka areas in the Bystrica Subunit. It is located within medium- and thin-bedded sandy dominated turbidites of the Campanian–Paleocene Ropianka Formation. It is comprised of red shales laminated or interlayered with strongly bioturbated green shales. Exposures of the Farony Shale are observed along a distance of ~25 km, in the form of a narrow belt. The age of the variegated deposits is estimated based on agglutinated foraminifera to late Campanian–earliest Maastrichtian. Their deposition was associated with low-energy conditions and a temporary limitation of the supply of sandy material to the inner part of the Magura Basin.

Źródło:

Geological Quarterly; 2023, 67, 2; art. no. 18
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 63.

Tytuł:

The erratic rocks of the Upper Cretaceous Chalk of England: how did they get there, ice transport or other means?

Autorzy:

Jeans, Christopher V.
Platten, Ian M.

Powiązania:

https://bibliotekanauki.pl/articles/1835594.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Cretaceous
chalk
erratics
gastroliths
fast ice
palaeogeography
NW Europe
kreda
eratyk
stały lód brzegowy
paleogeografia
Europa północno-zachodnia

Opis:

Rare erratic clasts - extraneous rock types - occur in the Upper Cretaceous Chalk, including a local basal facies, the Cambridge Greensand. The underlying Upper Albian Gault Clay and the Hunstanton Red Chalk Formations have also yielded erratics. The discovery of these erratics, their description and the development of hypotheses to explain their origins and significance are reviewed. They became the subject of scientific interest with the interpretation of a particularly large example “The Purley Boulder” by Godwin-Austen (1858) as having been transported to its depositional site in the Chalk Sea by drifting coastal ice. Thin section petrography (1930–1951) extended knowledge of their diverse provenance. At the same time the Chalk Sea had become interpreted as warm, so drifting ice was considered out of context, and the preferred agents of transport were entanglement in the roots of drifting trees, as holdfasts of floating marine algae, or as stomach stones of marine reptiles or large fish. Reconsideration of their occurrence, variable nature and sedimentary setting suggests that there are three zones in the English Chalk where erratics may be less rare (1) near the base of the Cenomanian in the Cambridge area, (2) the Upper Cenomanian-Middle Turonian in Surrey, and (3) the Upper Coniacian and Lower Santonian of Kent. The assemblage from each level and their sedimentary setting is subtly different. Present evidence suggests that the erratics found in the Upper Albian-Lower Cenomanian and the Upper Cenomanian-Middle Turonian zones represent shallow water and shoreline rocks that were transported into the Chalk Sea by coastal ice (fast-ice) that enclosed coastal marine sediments as it froze. The Upper Coniacian and Lower Santonian erratics from Rochester and Gravesend in Kent are gastroliths.

Źródło:

Acta Geologica Polonica; 2021, 71, 3; 287-304
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 64.

Tytuł:

Facies and sedimentation of Coniacian deposits of the Kraków Swell in the Wielkanoc area (southern Poland)

Autorzy:

Olszewska-Nejbert, D.
Świerczewska-Gładysz, E.

Powiązania:

https://bibliotekanauki.pl/articles/2060011.pdf

Data publikacji:

2013

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Upper Cretaceous
Coniacian
synsedimentary tectonics
Kraków Swell
microfacies
ponges

Opis:

Coniacian deposits, ca. 1.5 m thick, cropping out in the Wielkanoc Quarry, north of Kraków in southern Poland, consist of firm, nodular and, less commonly, marly limestones with horizons of in situ, slightly phosphatized hexactinellid sponges and thick-shelled inoceramid bivalves. The succession is composed of foraminiferal-inoceramid packstones with common sand-sized quartz and glauconite grains at the base, passing upwards into foraminiferal or foraminiferal-inoceramid wackestones with or without rare glauconite. A microfacies analysis shows that planktonic foraminifers are the dominant forms, while benthic forms are rare. The facies indicates that sedimentation in the Wielkanoc area on the Kraków Swell, which separated the deeper Mid-Polish Trough Zone to the north-east and the Opole Trough Zone to the south-west, was generally calm (documented by abundant wackestones) and slow (indicated by the dominant sedimentary “coccolith system” and presence of glauconite) during the Coniacian. Rare episodes of non-deposition are recorded by episodes of phosphatization and minor intra-Coniacian discontinuity surfaces. The presence of hexactinellid sponges in the section studied are consistent with a calm environment, below the storm-wave base, with low rates of sedimentation. Subhercynian (latest Turonian–Coniacian Ilsede Phase) local tectonic movements had an important influence on the evolution of the region. They presumably led to subsidence of the Wielkanoc Block during the Early Coniacian. These movements were probably associated with activity on the Kraków–Myszków Fault Zone.

Źródło:

Geological Quarterly; 2013, 57, 1; 1--16
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 65.

Tytuł:

Palaeoenvironmental interpretation of the Late Cretaceous Idzików Conglomerate Member (SW Poland, Sudetes, Idzików Quarry) based on analysis of trace fossils

Autorzy:

Chrząstek, Alina

Powiązania:

https://bibliotekanauki.pl/articles/1836354.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

SW Poland
Upper Nysa Kłodzka Graben
Upper Cretaceous
ichnology
palaeoenvironment

Opis:

In the sandstones and conglomerates of the Idzików Conglomerate Member (Coniacian), exposed in the Idzików Quarry (SW Poland, Upper Nysa Kłodzka Graben), a moderately diverse assemblage of trace fossils has been recognized. The trace fossils include Arenicolites isp., Asterosoma isp., ?Bergaueria isp., Cylindrichnus isp., Conichnus conicus, Curvolithus simplex, Dactyloidites ottoi, Diplocraterion parallelum, ?Diplocraterion isp., Gyrochorte isp., Gyrophyllites aff. kwassizensis, Macaronichnus segregatis, Ophiomorpha nodosa, Ophiomorpha isp., ?Palaeophycus isp., ?Rhizocorallium isp., Rosselia isp., ?Scolicia isp., Teichichnus isp. and Thalassinoides isp. Escape traces (fugichnia) and some unidentified trace fossils also were found. The following ichnoassociations are distinguished: (IA1) Ophiomorpha-Cylindrichnus, (IA2) Asterosoma-Conichnus and (IA3) Ophiomorpha- Arenicolites. IA1 probably represents a mixture of the impoverished proximal Cruziana ichnofacies and the distal Skolithos ichnofacies, which points to the lower, weakly storm-affected shoreface. IA2 is interpreted as the archetypal Skolithos ichnofacies (opportunistic colonization of tempestite beds) with some elements of the Cruziana ichnofacies (bioturbated, fair-weather background deposits) in the middle, moderately storm-affected shoreface. IA3 is assigned to the archetypal Skolithos ichnofacies, which indicates the upper shoreface-foreshore settings. The trace-fossil evidence implies that the Upper Cretaceous succession was deposited in a shallow, open basin with good oxygenation of the sea floor and normal salinity, under low- to moderately high-energy hydrodynamic conditions. On the basis of ichnological and sedimentological analyses, the deposits studied originated in a system of fan-delta and shallow-shelf settings with common transitional-proximal tempestites. They were deposited in the eastern part of the Upper Nysa Kłodzka Graben during the Coniacian regression.

Źródło:

Annales Societatis Geologorum Poloniae; 2020, 90, 2; 149-194
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 66.

Tytuł:

The Upper Cretaceous Ostreidae from the Middle Vistula Region (Poland)
Ostrygi górnokredowe z przełomu środkowej Wisły (Polska)
Ustricy verkhnego mela iz rajjona Central’nojj Visly (Pol’sha)

Autorzy:

Pugaczewska, H.

Powiązania:

https://bibliotekanauki.pl/articles/22524.pdf

Data publikacji:

1977

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

paleontology
Cretaceous
Upper Cretaceous
Ostreidae
ostreid
shell
Vistula River
Polska

Źródło:

Acta Palaeontologica Polonica; 1977, 22, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 67.

Tytuł:

Contrasting styles of siliciclastic flysch sedimentation in the Upper Cretaceous of the Silesian Unit, Outer Western Carpathians : sedimentology and genetic implications

Autorzy:

Strzeboński, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/2134836.pdf

Data publikacji:

2022

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

Carpathian flysch
debrites
deep-sea deposits
depositional system
gravitational resedimentation
Silesian Basin
tractionites
turbidites
Late Cretaceous

Opis:

This study reports on a new set of sedimentological data and related interpretations of the Santonian–Campanian siliciclastic deposits in the Western Flysch Carpathians based on natural outcrops in the uppermost Godula Formation and lowermost Istebna Formation. The rationale was to confront the characteristics of this flysch succession with current controversies and state of knowledge on deep-water clastic sedimentation. The sedimentological analysis of the field data allowed for multi-scale synthetic classifications of the depositional components in the investigated flysch. The hierarchical and practical nature of the suggested classification schemes allows for their application to similar deposits in other regions. The siliciclastic deposits are products of gravity-driven terrigenous sediment redeposition via submarine slumps, debris flows, and turbidity currents. Sediment reworking by tractional bottom currents is considered as an accompanying factor. Point-sourced turbiditic fan lobe fringes from the submarine piedmont ramp and linearly supplied debritic covers along the slope apron are proposed as dominant. The innovative linking between the textural-structural descriptive features of the deposits and the critical determinants of specific sediment gravity-flow processes and architectural elements of the deepwater clastic depositional systems is a significant contribution to this research field.

Źródło:

Annales Societatis Geologorum Poloniae; 2022, 92, 2; 159--180
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 68.

Tytuł:

First lambeosaurine dinosaur from the Nemegt formation, Upper Cretaceous, Mongolia
Pierwszy przedstawiciel dinozaurów podrodziny Lambeosaurinae z górnokredowej formacji Nemegt w Mongolii

Autorzy:

Maryanska, T.
Osmolska, H.

Powiązania:

https://bibliotekanauki.pl/articles/20511.pdf

Data publikacji:

1981

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Źródło:

Acta Palaeontologica Polonica; 1981, 26, 3-4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 69.

Tytuł:

The significance of Upper Cretaceous hardgrounds and other discontinuity surfaces for basin-wide correlations, based on drillcore data from boreholes in northern Poland

Autorzy:

Leszczyński, K.

Powiązania:

https://bibliotekanauki.pl/articles/2060581.pdf

Data publikacji:

2017

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Upper Cretaceous
discontinuity surface
hardground
basin-wide correlation
northern Poland

Opis:

The paper presents the hardgrounds and some other correlative discontinuity surfaces found in Upper Cretaceous (Cenomanian–Maastrichtian) borehole sections of northern Poland. They were briefly described, and depositional environment was identified for both the underlying deposit (UD) and the overlying deposit (OD). The significance of these features for both basin-wide correlations and broadly understood sequence stratigraphic techniques is highlighted. They were correlated with other major discontinuity surfaces identified in boreholes of northern Poland in both drill cores and well logs if such identification was reliable based on geophysical borehole data. All these discontinuity surfaces were referred to the boundaries of the individual depositional cycles determined within the Upper Cretaceous succession: K3-II/K3-III, K3-III/K3-IV, K3-IV/K4-I, K3-IV/K4-II, K4-I/K4-II (or II or IV or V), K4-III/K4-IV (or V), K4-IVa/K4-IVb, probably K4-IVb/K4-V, and K4-V/Pc-I. The discontinuity surfaces can be related to both sea level fluctuations and tectonic activity during the Subhercynian phases. Most of them developed in relatively calm sedimentary conditions, outside the central part of the Mid-Polish Trough. The exceptions are three hardgrounds from the Człopa–Szamotuły Zone, which seem to be associated mainly with the Late Cretaceous tectonic (including salt tectonics) activity of this zone. The most common UD/OD configuration of sedimentary environments is the open-marine carbonate shelf both beneath and above the discontinuity surface. The second most common situation is the open-marine carbonate shelf beneath and the open-marine shelf with carbonate-siliceous sedimentation above. The gaps at the surfaces span variously long intervals, ranging from short periods (spanning a fraction of a depositional cycle) to long periods (comprising one or more depositional cycles). The position of the discontinuity surfaces facilitates searching for any possible hiatuses in the sections of other boreholes, and paying attention to local changes in sediment distribution patterns, and local tectonic activity.

Źródło:

Geological Quarterly; 2017, 61, 4; 825--844
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 70.

Tytuł:

Late Cretaceous siliceous sponges from the Middle Vistula River Valley (Central Poland) and their palaeoecological significance
Późnokredowe gąbki krzemionkowe z doliny środkowej Wisły (Polska Centralna) i ich znaczenie paleoekologiczne

Autorzy:

Świerczewska-Gładysz, E.

Powiązania:

https://bibliotekanauki.pl/articles/191690.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

sponges
Hexactinosida
Lychniscosida
lithistids
taxonomy
palaeoecology
Upper Cretaceous
Central Poland

Opis:

Siliceous sponges are extremely abundant in the Upper Campanian-Maastrichtian opokas and marls of the Middle Vistula River Valley, situated in the western edge of the Lublin Basin, part of the Cretaceous German-Polish Basin. This is also the only one area in Poland where strata bearing the Late Maastrichtian sponges are exposed. The presented paper is a taxonomic revision of sponges collected from this region. Based both on existing and newly collected material comprising ca. 1750 specimens, 51 species have been described, including 18 belonging to the Hexactinosida, 15 - to the Lychniscosida and 18 - to Demospongiae. Among them, 28 have not been so far described from Poland. One new genus Varioporospongia, assigned to the family Ventriculitidae Smith and two new species Varioporospongia dariae sp. n. and Aphrocallistes calciformis sp. n. have been described. Comparison of sponge fauna from the area of Podilia, Crimea, Chernihov, and Donbas regions, as well as literature data point to the occurrence of species common in the analysed area and to the basins of Eastern and Western Europe. This in turn indicates good connections between particular basins of the European epicontinental sea during the Campanian-Maastrichtian. Analysis of the taxonomic composition of the Middle Vistula assem- blage suggests that the occurring sponge fauna is transitional between the faunas of Eastern and Western Europe, what may be linked with the central location of the Lublin Basin in the European epicontinental sea. The gradual upward decrease of taxonomic diversity of the Hexactinosida and Lychniscosida in the studied succession points to gradual basin shallowing, what is consistent with the global regressive trend by the end of the Cretaceous. The domination of the Hexactinellida over the lithistids in terms of diversity and abundance in the entire section allows us to estimate the maximum depth of the Late Campanian basin as 200-250 m and to constrain the minimum depth during the latest Maastrichtian as about 100 m.

Źródło:

Annales Societatis Geologorum Poloniae; 2006, 76, No 3; 227-296
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 71.

Tytuł:

Late Turonian and Early Coniacian ventriculitid sponges (Lychniscosida) from Opole Trough (southern Poland) and their palaeoecological significance

Autorzy:

Świerczewska-Gładysz, E.

Powiązania:

https://bibliotekanauki.pl/articles/191238.pdf

Data publikacji:

2012

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

sponges
Lychniscosida
taxonomy
palaeoecology
Upper Cretaceous
Opole Trough
southern Poland

Opis:

Eight species of ventriculitid sponges (Order Lychniscosida Schrammen, 1903) are described from the Upper Turonian marly limestones and Lower Coniacian marls of the Opole Trough (southern Poland). Among them four have not previously been noted in this area. Two species, Astropegma stellata (Roemer, 1840) and Leiostracosia robusta (Schrammen, 1902) are reported from Turonian strata for the first time. The occurrence of ventriculitid sponges in the Upper Turonian–Lower Coniacian succession of the Opole Trough indicates a soft- bottom, calm-water environment, with depths below the storm-wave base and a low rate of sedimentation.

Źródło:

Annales Societatis Geologorum Poloniae; 2012, 82, 3; 201--224
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 72.

Tytuł:

Coccolithophorides, Dinoflagelles, Hystrichosphaerides et microfossiles incertae sedis du Cretace superieur de Pologne
Coccolithophorides, Dinoflagelles, Hystrichosphaerides i mikroorganizmy incertae sedis z górnej kredy Polski
Coccolithophorides, Dinoflagelles, Hystrichosphaerides i mikroorganizmy incertae sedis iz verkhnego mela Polshi

Autorzy:

Gorka, H.

Powiązania:

https://bibliotekanauki.pl/articles/22665.pdf

Data publikacji:

1963

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Coccolithophorides
Dinoflagelles
Hystrichosphaerides
paleontology
Cretaceous
Upper Cretaceous
microorganism
fossil
Polska

Źródło:

Acta Palaeontologica Polonica; 1963, 08, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 73.

Tytuł:

Paralic arenaceous foraminifera from the Upper Cretaceous of the Benue Trough, Nigeria
Zlepieńcowate otwornice z górnokredowych osadów typu paralicznego Rowu Benue, Nigeria

Autorzy:

Petters, S.W.

Powiązania:

https://bibliotekanauki.pl/articles/21949.pdf

Data publikacji:

1979

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Źródło:

Acta Palaeontologica Polonica; 1979, 24, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 74.

Tytuł:

Siliceous sponges from the Upper Cretaceous of Poland. Part 1. Tetraxonia
Gąbki krzemionkowe z górnej kredy Polski. Część I. Tetraxonia
Verkhnemelovye kremnevye gubki Pol'shi. Chast' I. Tetraxonia

Autorzy:

Hurcewicz, H.

Powiązania:

https://bibliotekanauki.pl/articles/21993.pdf

Data publikacji:

1966

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

siliceous sponge
Upper Cretaceous
Polska
Tetraxonia
new species
paleontology
fossil animal

Źródło:

Acta Palaeontologica Polonica; 1966, 11, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 75.

Tytuł:

Calcite cements and the stratigraphical significance of the marine [delta^13]C carbonate reference curve for the Upper Cretaceous Chalk of England

Autorzy:

Jeans, C.
Hu, X.
Mortimore, R.

Powiązania:

https://bibliotekanauki.pl/articles/139078.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

cement kalcytowy
chemostratygrafia
izotopy
korelacja
kreda
krzywa referencyjna
ograniczenia
calcite cement
chemostratigraphy
correlation
Cretaceous
[delta^13]C reference curve
isotope events
limitations

Opis:

The hypothesis of Jarvis et al. (2006) that a [delta^13]C (calcite) reference curve based upon bulk samples from the Upper Cretaceous Chalk of England can be used as a primary criterion for trans-continental correlation is reviewed in the light of new stable isotope data from the Upper Albian and Cenomanian chalks of eastern England and from the Cenomanian to Campanian chalks of southern England. Evidence demonstrates that in the coloured chalks of eastern England the cements invariably have positive [delta^13]C values (up to 3.5[per mil]) except where they have been affected by hardground development when the cements have negative [delta^13]C values down to -6.5[per mil]. in contrast, the White Chalk of southern England may have cements with [delta^13]C values as negative as -8[per mil]. Modelling indicates that the coloured chalks may preserve a truer record of the primary palaeo-oceanographic [delta^13]C signal than the white and grey chalks of southern England. it is suggested that (1) many of the 72 isotope events described from the [delta^13]C (calcite) reference curve and proposed for correlation may reflect the effects of variations in the type and extent of calcite cementation; and (2) until much more is known about the patterns of calcite cementation in the Upper Cretaceous Chalk the use of minor isotope events for trans-continental stratigraphic correlation can only be applied with the utmost caution.

Źródło:

Acta Geologica Polonica; 2012, 62, 2; 173-196
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 76.

Tytuł:

Parametry porozymetryczne górnokredowych piaskowców ciosowych jako czynnik warunkujący ich odporność na wietrzenie
Porosimetric parameters of Upper Cretaceous sandstones and their weathering resistivity

Autorzy:

Labus, M.

Powiązania:

https://bibliotekanauki.pl/articles/183954.pdf

Data publikacji:

2009

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

piaskowce ciosowe
porowatość
odporność na wietrzenie
funkcja van Genuchtena
quader sandstones
porosity
weathering resistance
van Genuchten function

Opis:

Badaniom poddano górnokredowe piaskowce ciosowe, jako grupę skał dość jednorodnych pod względem składu mineralnego. Są to ponadto skały powszechnie stosowane do celów budowlanych. W wyniku przeprowadzonych analiz porozymetrycznych, metodą porozymetrii rtęciowej, otrzymano krzywe kumulacyjne rozkładu średnic porów w próbkach piaskowców. Krzywe te zostały dopasowane do funkcji empirycznej zależności ciśnienia od nasycenia P(S). Funkcja van Genuchtena w sposób empiryczny opisuje kształt krzywych kumulacyjnych, a jej parametry pozwalają na przeprowadzenie porównań ilościowych. W wyniku parametryzacji wyróżniono cztery klasy odporności na wietrzenie. Podział na poszczególne grupy nie jest bezpośrednio uzależniony od pochodzenia próbek, całkowitej porowatości skał, uziarnienia czy zawartości spoiwa. O odporności na wietrzenie, a co za tym idzie - o podziale na poszczególne klasy odporności, decyduje zespół wymienionych cech, wraz ze składem mineralnym i wykształceniem przestrzeni porowej. Ze względu na złożoność tych czynników wydaje, się że przedstawiona powyżej parametryzacja może być przydatnym narzędziem do określania podatności piaskowców na wietrzenie.
Upper Cretaceous quader sandstones are the group of rocks of relatively uniform mineral composition. They are also widely used, not only in Poland, for building purposes. Basing on the porosimetric analysis, carried out with use of mercury injection tests, the capillary pressure saturation curves were taken under consideration. The curves were fitted to van Genuchten's empirical capillary pressure-saturation function. The parameters of the function enable quantitative comparison between the sampled rocks. Basing on the parameterisation, with the van Genuchten function, of cumulative capillary pressure saturation curves, it was possible to distinguish four groups of the analysed sandstones. It could be concluded, that the weathering sustainability within the groups is not related to a single feature such as: origin of the samples, total porosity, grain-size distribution or cement content. The weathering-resistance is connected with the composition of the above-mentioned features, as well as mineral composition, and pore area characteristic. Taking into account a complicated nature of all the factors, the presented parametrisation could be a simple and useful device for the weathering-resistance classification of sandstones.

Źródło:

Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2009, 35, 2; 263-275
0138-0974

Pojawia się w:

Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 77.

Tytuł:

Redox conditions, glacio-eustasy, and the status of the Cenomanian-Turonian Anoxic Event: new evidence from the Upper Cretaceous Chalk of England

Autorzy:

Jeans, Christopher V.
Wray, David S.
Williams, C. Terry
Bland, David J.
Wood, Christopher J.

Powiązania:

https://bibliotekanauki.pl/articles/1835600.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Cretaceous
Cenomanian–Turonian Anoxic Event
eustatic lithocycles
glacial associations
redox conditions
cerium anomalies
carbon isotopes
NW Europe
Japan
kreda
cenoman
turon
asocjacje
redoks
izotopy węgla
północno-zachodnia Europa
Japonia

Opis:

The nature of the Cenomanian–Turonian Oceanic Anoxic Event (CTOAE) and its δ13 C Excursion is considered in the light of (1) the stratigraphical framework in which the CTOAE developed in the European shelf seas, (2) conclusions that can be drawn from new detailed investigations of the Chalk succession at three locations in England, at Melton Ross and Flixton in the Northern Province where organic-rich ‘black bands’ are present, and at Dover in the Southern Province (part of the Anglo-Paris Basin) where they are absent, and (3) how these conclusion fit in with the present understanding of the CTOAE. The application of the cerium anomaly method (German and Elderfield 1990) at Dover, Melton Ross and Flixton has allowed the varying palaeoredox conditions in the Chalk Sea and its sediments to be related to the acid insoluble residues, organic carbon, δ18O (calcite), δ13C (calcite), δ13C (organic matter), Fe 2+ and Mn2+ (calcite), and P/TiO2 (acid insoluble residue). This has provided evidence that the initial stages of the δ13C Excursion in England were related to (1) a drop of sea level estimated at between 45 and 85 metres, (2) influxes of terrestrial silicate and organic detritus from adjacent continental sources and the reworking of exposed marine sediments, and (3) the presence of three cold water phases (named the Wood, Jefferies and Black) associated with the appearance of the cold-water pulse fauna during the Plenus Cold Event. Conditions in the water column and in the chalk sediment were different in the two areas. In the Northern Province, cerium-enriched waters and anoxic conditions were widespread; the δ13C pattern reflects the interplay between the development of anoxia in the water column and the preservation of terrestrial and marine organic matter in the black bands; here the CTOAE was short-lived (~0.25 Ma) lasting only the length of the Upper Cenomanian Metoicoceras geslinianum Zone. In the Southern Province, water conditions were oxic and the δ13C Excursion lasted to the top of the Lower Turonian Watinoceras devonense Zone, much longer (~1.05 Ma) than in the Northern Province. These differences are discussed with respect to (1) the Cenomanian–Turonian Anoxic Event (CTAE) hypothesis when the ocean-continent-atmosphere systems were linked, (2) limitations of chemostratigraphic global correlation, and (3) the Cenomanian-Turonian Anoxic Event Recovery (CTOAER), a new term to define the varying lengths of time it took different oceans and seas to recover once the linked ocean-continent-atmosphere system was over. The possibility is considered that glacio-eustasy (the glacial control hypothesis of Jeans et al. 1991) with the waxing and waning of polar ice sheets, in association with the degassing of large igneous provinces, may have set the scene for the development of the Cenomanian-Turonian Anoxic Event (CTAE).

Źródło:

Acta Geologica Polonica; 2021, 71, 2; 103-152
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 78.

Tytuł:

Geochemical and stable isotope patterns of calcite cementation in the Upper Cretaceous Chalk, UK: Direct evidence from calcite-filled vugs in brachiopods

Autorzy:

Hu, X.
Jeans, C.
Dickson, T.

Powiązania:

https://bibliotekanauki.pl/articles/139259.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

cement kalcytowy
diageneza
historia
izotopy stabilne
kreda
pierwiastki śladowe
wpływ drobnoustrojów
anoxia
calcite cement
chalk
diagenesis
history
Microbial influence
oxia
stable isotopes
suboxia
trace elements

Opis:

The history of research into the cementation of the Upper Cretaceous Chalk of the UK is reviewed. Calcite-filled vugs within the shell cavities of terebratulid brachiopods from the Cenomanian Chalk of eastern england have been investigated by cathodoluminesence imaging, staining, electron microprobe and stable isotope analysis. This has provided the first detailed analysis of the geochemistry of the Chalk.s cement. two cement series, suboxic and anoxic, are recognized. Both start with a Mg-rich calcite with positive [delta^13]C values considered to have been precipitated under oxic conditions influenced by aerobic ammonification. The suboxic series is characterized by positive [delta^13]C values that became increasingly so as cementation progressed, reaching values of 3.5[per mil]. Manganese is the dominant trace element in the earlier cement, iron in the later cement. Mn-and Fe-reducing microbes influenced cement precipitation and the trace element and [delta^13]C patterns. The anoxic series is characterized by [delta^13]C values that became increasingly negative as cementation progressed, reaching values of .6.5[per mil]. Trace elements are dominated by iron and manganese. Sulphate-reducing microbes influenced cement precipitation and the trace element and [delta^13]C patterns. Both cement series are related closely to lithofacies and early lithification pre-dating the regional hardening of the Chalk. The suboxic series occurs in chalk which was continuously deposited and contained hematite pigment and limited organic matter. The anoxic series was associated with slow to nil deposition and hardground development inc halks that originally contained hematite pigment but no longer do so, and an enhanced supply of organic matter.

Źródło:

Acta Geologica Polonica; 2012, 62, 2; 143-172
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 79.

Tytuł:

Lower Turonian record of belemnite Praeactinocamax from NW Siberia and its palaeogeographic significance

Autorzy:

Kostak, M.
Wiese, F.

Powiązania:

https://bibliotekanauki.pl/articles/21284.pdf

Data publikacji:

2008

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Lower Turonian
belemnite
Praeactinocamax
Siberia
paleogeography
Belemnitellidae
Turonian
Upper Cretaceous
Russia

Opis:

Specimens of the belemnitellid Praeactinocamax Naidin, 1964 are described from the Upper Cretaceous of NW Siberia (Taimyr Region, Lower Agapa River, Russia). The rostra determined as Praeactinocamax aff. plenus consist of an aragonitic anterior part and a calcitic posterior part with a sharp boundary in between. This boundary surface is referred to as the “alveolar fracture”, and it is a typical morphological feature of early belemnitellids and not a result of diagenetic processes. The occurrence of Praeactinocamax in Arctic areas shows a wider palaeobiogeographical distribution of the genus in the Late Cenomanian–Early Turonian interval than previously known. This finding suggests that migration of the late Cenomanian–early Turonian fauna occurred across Turgai channel. The geographic position of these new records may also explain the occurrence of Praeactinocamax in the Turonian of the US Western Interior Seaway, the origin of which has been hitherto unclear.

Źródło:

Acta Palaeontologica Polonica; 2008, 53, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 80.

Tytuł:

Carolinidae a new family of xenosaurid-like lizards from the Upper Cretaceous of Mongolia
Carolinidae, nowa rodzina ksenozauroidalnych jaszcurek z górnej Kredy Mongolii

Autorzy:

Borsuk-Bialynicka, M.

Powiązania:

https://bibliotekanauki.pl/articles/22093.pdf

Data publikacji:

1985

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

Two lizards, Carolina intermedia gen. et sp. n. and Shinisauroides latipalatum gen. et sp. n. from the Late Cretaceous (? Middle Campanian) of the Gobi Desert are assigned to the new family Carolinidae. A hypothesis of a scincomorphan affiliation of this family is supported by two synapomorphies: the dentary overlap on the lateral surface of the coronoid, and the finger-like descensus parietalis, as well as by some other characters which best correspond with this affiliation. Xenosaurid characters displayed by the described lizards: the hour-glass shaped frontals and the diffuse osteodermal skull covering, are considered as homoplasy.
Materiał do niniejszej pracy pochodzi z osadów g. kredy (? śr. kampan) (Gradziński et al 1968, Gradziński and Jerzykiewicz 1972 i Gradziński et al 1977) Mongolii. Materiał ten zebrany został przez Polsko-Mongolskie Ekspedycje Paleontologiczne na pustynią Gobi w latach 1963—71 i przechowywany jest w Zakładzie Paleobiologii PAN w Warszawie. W pracy opisano dwie nowe jaszczurki: Carolina intermedia gen. et sp. n. (pl. 1: 1; 2: 1; 3: 5; 4: 2; fig. 1B, 2B, ЗА,A’; 4A; 5C; 6L) i Shinisauroides latipalatum gen. et sp. n. (pl. 2: 3, 4; 3: 1—4; 4: 1; fig. 1A; 2A; 3B,B’; 4B; 5B; 6K; 7A) ze stanowisk Chermin Caw, Chulsan i Nemegt, podobne na pierwszy rzut oka do Xenosaurus, współczesnego, amerykańskiego rodzaju należącego do Xenosauridae (Anguimorpha). Uznano jednak, że cechy, które upodobniają do siebie te rodzaje: przewężone kości czołowe i pokrycie osteodermalne złożone z licznych drobnych elementów, nie wystarczają do zaliczenia ich do Xenosauridae, tym bardziej, że cechy te są przypuszczalnie sprzężone (Borsuk-Białynicka 1984). Zgodnie z preferowaną tu hipotezą są one uznane za homoplazje (fig. 8B: 1, 2). Również krótka i silnie sklepiona część przedoczodołowa czaszki upodobniająca opisane rodzaje do Shinisaurus crocodilurus (fig. 5), współczesnego azjatyckiego przedstawiciela Xenosauridae, będącego południowochińskim (Kwangsi) endemitem, uznana została za homoplazję (fig. 8B: 4) wobec głębokich różnic, jakie dzielą nowe rodzaje Carolina i Shinisauroides od Anguimorpha. Różnice te są następujące: Wydłużenie kości zębowej poza kość koronową i nakładanie się wyrostka kości zębowej na powierzchnię zewnętrzną kości koronowej (5), szeroko otwarty dół żuchwowy (6), brak wyrostka skrzydłowego kości przedusznej puszki mózgowej (7), parzyste kości przedszczękowe (8), szeroki kontakt kości lemieszowych z podniebiennymi (9), występowanie półki podzębowej w żuchwie (10) i długiego, wąskiego wyrostka zstępującego kości ciemieniowych (11). Tak liczne różnice względem rodziny Xenosauridae i całego podrzędu Anguimorpha wskazują na odrębność opisanych rodzajów od tego podrzędu oraz wzajemne bliskie pokrewieństwo, które dodatkowo potwierdzają nieliczne cechy ksenozauridowe obu rodzajów (cechy 1, 2 i 4). Uprawnia to do utworzenia nowej, wspólnej dla Carolina i Shinisauroides rodziny Carolinidae. Wiele z wymienionych wyżej cech rodziny Carolinidae (5, 6, 8, 9, 10, 11) spotyka się u rozmaitych przedstawicieli Scincomorpha, a niektóre z nich uważane są (Estes et al 1985) za synapomorfie tego podrzędu. Są to cechy następujące: nakładanie się kości zębowej na zewnętrzną powierzchnię kości koronowej (5) i obecność długiego, wąskiego wyrostka kości ciemieniowej (11). Szeroko otwarty dół żuchwowy (6) i parzyste kości przedszczękowe (8) to dwie cechy, które mogą również okazać się synapomorfiami Scincomorpha. Szeroki kontakt lemieszowo-podniebienny (9A) i obecność półki podzębowej w żuchwie (10) oraz obecność wyrostków zstępujących kości czołowych (3) i brak wyrostka skrzydłowego kości przedusznej (7) to przypuszczalnie cechy plezjomorficzne dla obu podrzędów Autarchoglossa, które nie stoją w sprzeczności z zaliczeniem Carolinidae do Scincomorpha, gdyż nie były przypuszczalnie zastąpione cechami nowymi u wspólnego przodka jaszczurek scynkomorfowych i trafiają się często w tym podrzędzie. Zaliczenie Carolinidae do Scincomorpha jest tu jednak traktowane jako próbne, gdy wymaga ono gruntowniejszych studiów nad tym podrzędem, co wykracza poza ramy niniejszej pracy. Terminologia użyta w niniejszej pracy opiera się na opracowaniu Oelricha (1956) i Rieppla (1980). Metodologia kladystyczna zastosowana w pracy wywodzi się z taksonomii filogenetycznej Henniga (1965), (patrz też Schaeffer et al 1972 i Hecht 1976). Praca została wykonana w ramach problemu MR II. 6.

Źródło:

Acta Palaeontologica Polonica; 1985, 30, 3-4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 81.

Tytuł:

Campanian-Paleocene Jaworzynka Formation in its type area (Magura Nappe, Outer Carpathians)

Autorzy:

Waśkowska, Anna
Golonka, Jan
Starzec, Krzysztof
Cieszkowski, Marek

Powiązania:

https://bibliotekanauki.pl/articles/1835592.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Upper Cretaceous
Paleogene
lithostratigraphy
foraminifera
biostratigraphy
kreda górna
paleogen
litostratygrafia
otwornice
biostratygrafia

Opis:

The Campanian-Paleocene Jaworzynka Formation, a part of the Magura Nappe succession in the Polish Outer Carpathians, is described in terms of its detailed litho- and biostratigraphy. The formation stretches along the marginal part of the Siary Unit, from the Jaworzynka stratotype area in the Silesian Beskid Mts up to the Mszana Dolna area in the Beskid Wyspowy Mts. Its equivalent in the Moravskoslezské Beskydy Mts of the Czech Republic is the Soláň Formation. In the stratotype area, the formation displays complex structure. We distinguish four lithological units, i.e., Biotite Sandstone and Shale (I), Shale (II), Mutne Sandstone Member (III) and Thin-bedded Turbidite (IV) and provide the first detailed biostratigraphy of particular units. The first unit forms the most prominent part of the formation. It was deposited in the Middle Campanian-earliest Maastrichtian within the upper part of Caudammina gigantea Zone up to the lower part of the Rzehakina inclusa Zone. The second unit occurs only locally and its age is limited to the Maastrichtian, to the Rzehakina inclusa Zone. The third unit is composed of thick-bedded sandstones that in some parts may form more than the half of the total thickness of the formation. It is Late Maastrichtian-Danian in age and is placed in the upper part of the Rzehakina inclusa Zone and the lower part of the Rzehakina fissistomata Zone. It is usually covered by a thin package of thin-bedded turbiditic sandstone and shales of Danian-Thanetian age with foraminifera of the Rzehakina fissistomata Zone.

Źródło:

Acta Geologica Polonica; 2021, 71, 3; 345-370
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 82.

Tytuł:

Coccoliths and index foraminifera from the Upper Cretaceous chalk of Mielnik region, Eastern Poland
Kokkolity i przewodnie otwornice z kredy piszącej Mielnika nad Bugiem

Autorzy:

Gazdzicka, E.

Powiązania:

https://bibliotekanauki.pl/articles/21290.pdf

Data publikacji:

1981

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Źródło:

Acta Palaeontologica Polonica; 1981, 26, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 83.

Tytuł:

Rozwój litofacjalny późnej kredy Niżu Polskiego
Lithofacies evolution of the Late Cretaceous Basin in the Polish Lowlands

Autorzy:

Leszczyński, K.

Powiązania:

https://bibliotekanauki.pl/articles/2062985.pdf

Data publikacji:

2010

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

litofacje
paleotektonika
kreda górna
Niż Polski
lithofacies
palaeotectonic setting
Upper Cretaceous
Polish Lowlands

Opis:

Praca jest podsumowaniem wieloletnich badań autora prowadzonych nad stratygrafią, litologią i paleogeografią kredy górnej Niżu Polskiego. W wyniku syntezy danych z 1018 otworów wiertniczych skonstruowano 6 map litofacjalno-paleogeograficznych, odpowiadających wydzielonym dla basenu późnej kredy na obszarze Niżu Polskiego cyklom transgresywno-regresywnym: K3-II–K3-III (wczesny cenoman–starszy późny cenoman), K3-IV (najmłodszy cenoman–środkowy turon), K4-I (późny turon–koniak), K4-II (santon–najstarszy kampan), K4-III (młodszy wczesny kampan–najstarszy mastrycht) i K4-IV–K4-V (młodszy wczesny mastrycht–późny mastrycht). Na mapach zastosowano jakościowe rekonstrukcje litofacjalne, ze wskazaniem na dominujący składnik litologiczny oraz składniki litologiczne towarzyszące. Wydzielono dziewięć kategorii litofacjalnych, odpowiadających określonym środowiskom i systemom depozycyjnym. Są to litofacje: kredy piszącej, węglanowa (wapienna), węglanowo-krzemionkowa, marglista, ilasto-marglista, mułowcowo-marglista, mułowcowo-piaszczysto-marglista, węglanowo piaszczysta i piaszczysta. W ramach prac nad prezentowaną w artykule wersją map, autor dokonał też kompleksowej analizy materiałów z wierceń Niżu Polskiego, uwzględniając przede wszystkim profilowania geofizyki wiertniczej. Niektóre profile wierceń zostały zweryfikowane i ponownie zinterpretowane. W szczególności, akcent położono na analizę poziomów twardych den, przerw sedymentacyjnych i wszelkich przejawów cykliczności sedymentacji. Umożliwiło to, w kilku przypadkach, logiczne korelacje odpowiadających sobie kompleksów litologicznych, które wcześniej stwarzały problemy interpretacyjne i były niewłaściwie skorelowane. Scharakteryzowano ogólne następstwo litofacji w basenie, zaprezentowano uwagi o subsydencji i batymetrii basenu oraz przedyskutowano pokrótce problem inwersji tektonicznej bruzdy śródpolskiej. Przedstawiona także została historia rozwoju litofacjalnego basenu późnej kredy.
The report is a general overview of the author’s many-year studies on the Late Cretaceous stratigraphy, lithology and paleogeography of the Polish Lowlands. Six lithofacies maps are presented for individual transgressive-regressive cycles in the Late Cretaceous of the Polish Basin: K3-II–K3-III (Early–early Late Cenomanian), K3-IV (latest Cenomanian–Middle Turonian), K4-I (Late Turonian–Coniacian), K4-II (Santonian–earliest Campanian), K4-III (late Early Campanian–earliest Maastrichtian), K4-IV–K4-V (late Early–Late Maastrichtian). The maps were constructed using qualitative lithofacies reconstructions with the dominant lithofacies component and accessory components indicated. Nine lithofacies types, corresponding to specific sedimentary environments and depositional systems, have been identified within the Upper Cretaceous succession of the Polish Lowlands: chalk, carbonate, carbonate-siliceous, marl, claystone-marl, mudstone (siltstone)-marl, mudstone-sandstone-marl, sandy-carbonate and sandstone lithofacies. The present version of the maps is based on an integrated analysis of drilling materials, mainly wireline logs. Lithology and stratigraphy in some boreholes were verified and reinterpreted by the author. In particular, special emphasis was laid on analysing hardgrounds, sedimentary breaks and any signs of sedimentary cyclicity. It enabled logical correlations between corresponding lithological complexes, which were previously incorrectly correlated. General succession of lithofacies in the basin is characterised, remarks on its subsidence and bathymetry are presented and a brief discussion of the problem of Late Cretaceous tectonic inversion of the Mid-Polish Trough is given. The report also presents the history of lithofacies evolution in the Late Cretaceous basin.

Źródło:

Biuletyn Państwowego Instytutu Geologicznego; 2010, 443; 33--53
0867-6143

Pojawia się w:

Biuletyn Państwowego Instytutu Geologicznego

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 84.

Tytuł:

Late Cretaceous inversion and salt tectonics in the Koszalin-Chojnice and Drawno-Człopa-Szamotuły zones, Pomeranian sector of the Mid-Polish Trough

Autorzy:

Leszczyński, K.

Powiązania:

https://bibliotekanauki.pl/articles/2059905.pdf

Data publikacji:

2002

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Mid-Polish Trough
Upper Cretaceous
salt structures
inversion
palaeogeography
facies and thickness analysis

Opis:

Late Cretaceous inversion processes and their relation to salt movements in the Pomeranian sector of the Mid-Polish Trough are described, based on deep boreholes. Two tectonic zones, inverted in the Late Cretaceous, located in the Mid-Polish Trough, were selected for study: the Koszalin-Chojnice Zone situated NE of the present-day Mid-Polish Swell in the Pomeranian Trough, within an area of non-salt anticlines, and the Drawno-Człopa-Szamotuły Zone located in the Szczecin Trough, SW of the Mid-Polish Swell, in an area of strong salt tectonics. The stratigraphic gaps present indicate that the first pulse of Late Cretaceous inversion might have occurred in the Coniacian-early Santonian in this area. Another pulse can be dated at late Campanian-early Maastrichtian. Intra-Cretaceous stratigraphic gaps reached their maximum areal extent in the Coniacian (Inoceramus involutus Zone) and Upper Campanian (Koszalin-Chojnice Zone). Over large areas, Santonian (mostly upper Santonian) deposits rest upon Turonian (including Inoceramus schloenbachi Zone), and locally on older rocks. The lithofacies maps show that thickness and lithofacies distribution in the Cenomanian was independent of the strike of the Koszalin-Chojnice Zone. Such a dependence began and was accentuated in the Coniacian. Santonian and Campanian clastic deposits, extending along the SW boundary of the Mid-Polish Swell and absent in the SW part of the Pomeranian Trough, suggest local tectonic inversion within the central part of the Mid-Polish Trough.

Źródło:

Geological Quarterly; 2002, 46, 3; 347-362
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 85.

Tytuł:

The late Cenomanian oyster Lopha staufferi (Bergquist, 1944) – the oldest ribbed oyster in the Upper Cretaceous of the Western Interior of the United States

Autorzy:

Hook, S. C.
Cobban, W. A.

Powiązania:

https://bibliotekanauki.pl/articles/138617.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Cenomanian
oysters
U.S. Western Interior
Taxonomy
paleogeography
biostratigraphy
Sweepstake Routes
Zigzag Commissure
Twowells Tongue
Dakota Sandstone
cenoman
ostrygi
Środkowo-Zachodnie Stany Zjednoczone
systematyka
paleogeografia
biostratygrafia
Dakota
piaskowiec

Opis:

Lopha staufferi (Bergquist, 1944) is a medium-sized, ribbed, Late Cretaceous oyster with a slightly curved axis and a zigzag commissure; it appears suddenly and conspicuously in upper Cenomanian rocks in the Western Interior Basin of the United States. At maturity, the ribs on both valves thicken into steep flanks that allow the oyster to increase interior volume without increasing its exterior footprint on the seafloor. Lopha staufferi is the first (earliest) ribbed oyster in the Late Cretaceous of the Western Interior, but has no ancestor in the basin. It disappears from the rock record as suddenly as it appeared, leaving no direct descendent in the basin. In the southern part of the basin where it is well constrained, L. staufferi is restricted stratigraphically to the upper Cenomanian Metoicoceras mosbyense Zone (= Dunveganoceras conditum Zone in the north). Lopha staufferi has an unusual paleogeographic distribution, occurring in only two, widely scattered areas in the basin. It has been found at several localities near the western shoreline of the Late Cretaceous Seaway in west-central New Mexico and adjacent Arizona, and in localities 1,900 km (1,200 mi) to the northeast near the eastern shoreline in northeastern Minnesota, but nowhere in between. In west-central New Mexico and adjacent Arizona, L. staufferi is a guide fossil to the Twowells Tongue of the Dakota Sandstone.

Źródło:

Acta Geologica Polonica; 2016, 66, 4; 609-626
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 86.

Tytuł:

Inoceramids and associated ammonite faunas from the uppermost Turonian-lower Coniacian (Upper Cretaceous) of the Anaipadi-Saradamangalam region of the Cauvery Basin, south-east India

Autorzy:

Walaszczyk, I.
Kennedy, W. J.
Paranjape, A. R.

Powiązania:

https://bibliotekanauki.pl/articles/139132.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Upper Cretaceous
Turonian
coniacian
Cauvery Basin
SE India
inoceramids
ammonites
biostratigraphy
stratigraphic correlation
górna kreda
turon
koniak
Kaweri
Indie
inoceramy
amonity
biostratygrafia
korelacja stratygraficzna

Opis:

The lower (but not lowermost) part of the Upper Cretaceous Anaipadi Formation of the Trichinopoly Group in the area between Kulatur, Saradamangalam and Anaipadi, in the south-western part of the Cauvery Basin in southeast India yielded rich inoceramid and ammonite faunas. The ammonites: Mesopuzosia gaudama (Forbes, 1846), Damesites sugata (Forbes, 1846), Onitschoceras sp., Kossmaticeras (Kossmaticeras) theobald ianum (Stoliczka, 1865), Lewesiceras jimboi (Kossmat, 1898), Placenticeras kaffrarium Etheridge, 1904, and Pseudoxybeloceras (Schlueterella) sp., are characteristic of the Kossmaticeras theobaldianum Zone. The absence of Peroniceras (P.) dravidicum (Kossmat, 1895) indicates the presence of only lower part of this zone, referred to the nominative Kossmaticeras theobaldianum Subzone at the localities studied. The inoceramids present are Tethyoceramus madagascariensis (Heinz, 1933) and Cremnoceramus deformis erectus (Meek, 1877), recorded for the first time from the region. The latter dates the studied interval as early early Coniacian, and allows, for the first time, direct chronostratigraphic dating of the Tethyoceramus madagascariensis Zone, and consequently also of the Kossmaticeras theobaldianum Subzone. As inoceramids occur in the middle part of the ammonite-rich interval, the Kossmaticeras theobaldianum Subzone may be as old as latest Turonian and not younger than early early Coniacian. The base of the Coniacian lies in the lower, but not lowermost part of the Anaipadi Formation. Both inoceramids and ammonites represent taxa known from Madagascar and South Africa.

Źródło:

Acta Geologica Polonica; 2018, 68, 4; 663-687
0001-5709

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Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 87.

Tytuł:

Facies heterogeneity of a deep-sea depositional lobe complex : case study from the Słonne section of Skole Nappe, Polish Outer Carpathians

Autorzy:

Łapcik, P.

Powiązania:

https://bibliotekanauki.pl/articles/191784.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

deep-marine turbidites
depositional lobes
dynamic stratigraphy
facies analysis
mass flow deposits
Upper Cretaceous

Opis:

This article reports on the first detailed study of the Skole Nappe’s Ropianka Formation in the Słonne outcrop section along river San. Lithological and micropalaeontological similarities indicate that the sedimentary succession correlates with the formation’s Wiar Member of Campanian–late Maastrichtian age. The sedimentary succession, more than 140 m thick, is interpreted as a deep-marine complex of turbiditic depositional lobes and the study reveals its sedimentary anatomy. Six component facies of sediment gravity-flow deposits and their stratigraphic grouping into four facies associations are recognized, with these latter considered to represent deposits of the lobe axial zone, lateral flank zone and featheredge fringe zone, as well as an interlobe outer-fringe zone. Semi-quantitative characterization and comparison of facies associations gives insight into the succession’s sedimentary heterogeneity. Six depositional lobes superimposed upon one another are recognized in the stratigraphic succession, and their pattern of vertical stacking is interpreted in terms of dynamic stratigraphy on the basis of the upward succession of facies associations. The stratigraphic arrangement of facies associations is attributed to autogenic morphodynamic changes within the evolving depositional system, although it cannot be precluded that also eustatic and local tectonic forcing came into play. The case study sheds more light on the sedimentary environment, sediment sourcing system and spatial depositional pattern in the Late Cretaceous Skole Basin, where the aggrading seafloor apparently oscillated around the lysocline depth that could be mid-bathyal at that time.

Źródło:

Annales Societatis Geologorum Poloniae; 2017, 87, 4; 301-324
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 88.

Tytuł:

Remains of Upper Cretaceous Mosaisauridae (Reptilia) of Central Poland
Szczątki górno-kredowych mozazauridów Polski Środkowej (Mosasauridae, Reptilia)
Ostatki verkhnemelovykh mozazavridov Central'nojj Pol'shi (Mosasauridae, Reptilia)

Autorzy:

Sulimski, A.

Powiązania:

https://bibliotekanauki.pl/articles/21478.pdf

Data publikacji:

1968

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Źródło:

Acta Palaeontologica Polonica; 1968, 13, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 89.

Tytuł:

Biostratygrafia mikropaleontologiczna utworów kredy górnej i miocenu w wierceniu "Bibice" (okolice Krakowa)
Micropaleontological biostratigraphy of the Upper Cretaceous and Miocene deposits in "Bibice" borehole (Kraków area)

Autorzy:

Zapałowicz-Bilan, B.
Pilarz, M.
Machaniec, E.

Powiązania:

https://bibliotekanauki.pl/articles/183417.pdf

Data publikacji:

2009

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

biostratygrafia
mikropaleontologia
kreda późna
miocen
okolice Krakowa
biostratigraphy
micropaleontology
Late Cretaceous
Miocene
Kraków area

Opis:

Lower Campanian marls and marly opokas with cherts ("Bibice" borehole, Kraków vicinity) are rich in benthic forams (mainly Stensioeina and Gavelinella species) and rare planktic ones (Hedbergella). The overlying Miocene deposits (Kłodnik and Skawina beds), are developed as conglomerates (equivalent of fresh-water marls in Krakow region) which are completely devoid of microfossils, but younger clays are full of the Badenian forams.

Źródło:

Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2009, 35, 2/1; 95-103
0138-0974

Pojawia się w:

Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 90.

Tytuł:

Klasyczne stanowiska paleontologiczne górnej kredy zachodniej Ukrainy: historia badań oraz biostratygrafia
Classic palaeontological sites in the Upper Cretaceous of western Ukraine: history of research and biostratigraphy

Autorzy:

Machalski, M.
Malchyk, O.

Powiązania:

https://bibliotekanauki.pl/articles/2075518.pdf

Data publikacji:

2016

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

inoceramy
amonity
górna kreda
zachodnia Ukraina
biostratygrafia
inoceramids
ammonites
upper Campanian/Maastrichtian
Western Ukraine
biostratigraphy

Opis:

For a long time, outcrops at Potelych, Nahoryany and Lviv in western Ukraine have been of special interestfor Campanian andMaastrichtian (Upper Cretaceous) palaeontology and biostratigraphy. An overview of studies devoted to these classic sites is presented, including an early account of the locality of Nahoryany in a Polish newspaper, dated 1843. The biostratigraphic position ofthese successions is reviewed, based on recent progress in studies of inoceramid bivalves and ammonites. The succession at Potelych, from where a unique land flora was described at the beginning of the 20th century, represents the upper Campanian “Ino- ceramus” costaecus Zone. The Nahoryany opoka, the source of rich fossil collections that were sent to many European museums in the 19th century, belongs to the lower Maastrichtian Endo- costea typica and Trochoceramus radiosus zones. The so-called Lviv marls correspond to the lower upper Maastrichtian Spyridocera- mus tegulatus Zone. The giant scaphitid ammonites Hoploscaphites quadrispinosus and Acanthoscaphites tridens s. str from Potelych and Nahoryany corroborate the inoceramid-based dating of these successions.

Źródło:

Przegląd Geologiczny; 2016, 64, 8; 570--576
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 91.

Tytuł:

Sulfur isotope patterns of iron sulfide and barite nodules in the Upper Cretaceous Chalk of England and their regional significance in the origin of coloured chalks

Autorzy:

Jeans, C. V.
Turchyn, A. V.
Hu, X.-F.

Powiązania:

https://bibliotekanauki.pl/articles/139390.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Cretaceous
diagenesis
iron sulfide nodules
δ34S values
bacterial control
coloured chalks
volcanogenic events
NW Europe
kreda
diageneza
siarczan żelaza
wartości δ34S
kontrola bakteryjna
Europa

Opis:

The relationship between the development of iron sulfide and barite nodules in the Cenomanian Chalk of England and the presence of a red hematitic pigment has been investigated using sulfur isotopes. In southern England where red and pink chalks are absent, iron sulfide nodules are widespread. Two typical large iron sulfide nodules exhibit δ³⁴S ranging from -48.6‰ at their core to -32.6‰ at their outer margins. In eastern England, where red and pink chalks occur in three main bands, there is an antipathetic relationship between the coloured chalks and the occurrence of iron sulfide or barite nodules. Here iron sulfide, or its oxidised remnants, are restricted to two situations: (1) in association with hard grounds that developed originally in chalks that contained the hematite pigment or its postulated precursor FeOH₃, or (2) in regional sulfidization zones that cut across the stratigraphy. In the Cenomanian Chalk exposed in the cliffs at Speeton, Yorkshire, pyrite and marcasite (both iron sulfide) nodules range in δ³⁴S from -34.7‰ to +40.0‰. In the lower part of the section δ³⁴S vary from -34.8‰ to +7.8‰, a single barite nodule has δ³⁴S between +26.9‰ and +29.9‰. In the middle part of the section δ³⁴S ranges from +23.8‰ to +40.0‰. In the sulfidization zones that cut across the Cenomanian Chalk of Lincolnshire the iron sulfide nodules are typically heavily weathered but these may contain patches of unoxidised pyrite. In these zones, δ³⁴S ranges from -32.9‰ to +7.9‰. The cross-cutting zones of sulfidization in eastern England are linked to three basement faults – the Flamborough Head Fault Zone, the Caistor Fault and the postulated Wash Line of Jeans (1980) – that have affected the deposition of the Chalk. It is argued that these faults have been both the conduits by which allochthonous fluids – rich in hydrogen sulfide/sulfate, hydrocarbons and possibly charged with sulfate-reducing bacteria – have penetrated the Cenomanian Chalk as the result of movement during the Late Cretaceous or Cenozoic. These invasive fluids are associated with (1) the reduction of the red hematite pigment or its praecursor, (2) the subsequent development of both iron sulfides and barite, and (3) the loss of overpressure in the Cenomanian Chalk and its late diagenetic hardening by anoxic cementation. Evidence is reviewed for the origin of the red hematite pigment of the coloured chalks and for the iron involved in the development of iron sulfides, a hydrothermal or volcanogenic origin is favoured.

Źródło:

Acta Geologica Polonica; 2016, 66, 2; 227-256
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 92.

Tytuł:

Regional hardening of Upper Cretaceous Chalk in eastern England, UK: trace element and stable isotope patterns in the Upper Cenomanian and Turonian Chalk and their significance

Autorzy:

Jeans, C. V.
Long, D.
Hu, X.-F.
Mortimore, R. N.

Powiązania:

https://bibliotekanauki.pl/articles/139436.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

chalk hardening
trace elements
stable isotopes
cement modelling
reservoir diagenesis
history
kreda
hartowanie
pierwiastki śladowe
izotopy trwałe
cement
historia

Opis:

The regional hardening of the Late Cenomanian to Early Turonian Chalk of the Northern Province of eastern England has been investigated by examining the pattern of trace elements and stable carbon and oxygen isotopes in the bulk calcite of two extensive and stratigraphically adjacent units each 4 to 5 m thick of hard chalk in Lincolnshire and Yorkshire. These units are separated by a sequence, 0.3–1.3 m thick, of variegated marls and clayey marls. Modelling of the geochemistry of the hard chalk by comparison with the Standard Louth Chalk, combined with associated petrographic and geological evidence, indicates that (1) the hardening is due to the precipitation of a calcite cement, and (2) the regional and stratigraphical patterns of geochemical variation in the cement are largely independent of each other and have been maintained by the impermeable nature of the thin sequence of the clay-rich marls that separate them. Two phases of calcite cementation are recognised. The first phase was microbially influenced and did not lithify the chalk. It took place predominantly in oxic and suboxic conditions under considerable overpressure in which the Chalk pore fluids circulated within the units, driven by variations in compaction, temperature, pore fluid pressure and local tectonics. There is evidence in central and southern Lincolnshire of the loss of Sr and Mg-enriched pore fluids to the south during an early part of this phase. The second phase of calcite precipitation was associated with the loss of overpressure in probably Late Cretaceous and in Cenozoic times as the result of fault movement in the basement penetrating the overlying Chalk and damaging the seal between the two chalk units. This greatly enhanced grain pressures, resulting in grain welding and pressure dissolution, causing lithification with the development of stylolites, marl seams, and brittle fractures. Associated with this loss of overpressure was the penetration of the chalk units by allochthonous fluids, rich in sulphate and hydrocarbons, derived probably from the North Sea Basin. Microbial sulphate-reduction under anoxic conditions within these allochthonous fluids has been responsible for dissolving the fine-grained iron and manganese oxides within the chalk, locally enriching the Fe and Mn content of the calcite cement. The possibility is discussed that the pattern of cementation preserved in these regionally hard chalks of Late Cenomanian and Early Turonian age may be different from that preserved in the younger (late Turonian to Campanian) more basinal chalks of eastern England.

Źródło:

Acta Geologica Polonica; 2014, 64, 4; 419-455
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 93.

Tytuł:

Coniacian sandstones from the North Sudetic Synclinorium revisited: palaeoenvironmental and palaeogeographical reconstructions based on trace fossil analysis and associated body fossils

Autorzy:

Chrząstek, A.
Wypych, M.

Powiązania:

https://bibliotekanauki.pl/articles/94674.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

ichnology
Upper Cretaceous
Sudetes Mountains
Żerkowice Member
foreshore
shoreface
ichnologia
górna kreda
Sudety
przybrzeże
wybrzeże

Opis:

The Coniacian quartz sandstones (Żerkowice Member, Rakowice Wielkie Formation) that crop out at quarries near Czaple-Nowa Wieś Grodziska (North Sudetic Synclinorium) contain a low-diversity assemblage of trace fossils: Gyrochorte isp., Ophiomorpha nodosa Lundgren, 1891, Ophiomorpha isp., Phycodes cf. curvipalmatum (Pollard, 1981), ?Phycodes isp., Planolites cf. beverleyensis (Billings, 1862), Thalassinoides paradoxicus Woodward, 1830 and ?Thalassinoides isp. Moreover, interesting compound burrow systems, here referred to as Thalassinoides-Phycodes cf. palmatus and ?Thalassinoides-Phycodes, were recognised at the Czaple Quarry. Additionally, ?Gyrochorte isp., Phycodes cf. flabellum (Miller and Dyer, 1878) and ?Treptichnus isp. were encountered at correlative levels in the Rakowice Małe Quarry. Some of these ichnotaxa have not been recorded previously from Coniacian sandstones of the Żerkowice Member. Additionally, in slabs of these sandstones, the gastropod Nerinea bicincta Bronn, 1836 and the bivalve Lima haidingeri Zittel, 1866 were found. These interesting finds, in particular the gastropods, were already noted from the study area in the first half of the twentieth century by Scupin (1912–1913). Ethologically, the trace fossil assemblage is represented by domichnia or domichnia/fodinichnia (Ophiomorpha, Thalassinoides), fodinichnia (Phycodes) and pascichnia (Gyrochorte, Planolites). The compound burrow systems (Thalassinoides-Phycodes) are interpreted as dwelling/feeding structures. The possible tracemakers are crustaceans (Ophiomorpha, Thalassinoides) or worm-like animals (annelids and other) (Planolites, ?Phycodes, Gyrochorte and ?Treptichnus). The assemblage of trace fossils is characteristic of the Skolithos ichnofacies and Cruziana ichnofacies, typical of shallow-marine settings. Ichnological studies, as well as the presence of accompanying fossils (bivalves, gastropods), confirm the palaeoenvironmental reconstruction of the Żerkowice Member sandstones by Leszczyński (2010). That author interpreted the Coniacian sandstones as bar and storm deposits laid down in a shallow epicontinental sea (mainly the foreshore-upper shoreface; up to the middle shoreface) under normal oxygenation and salinity, in soft substrate, above fair-weather wave base. The deposition of the Żerkowice Member sandstones is linked to a regression that started after uplift of the southeastern part of the North Sudetic Synclinorium.

Źródło:

Geologos; 2018, 24, 1; 29-53
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 94.

Tytuł:

Late Cenomanian.Turonian (Cretaceous) ammonites from Wadi Qena, central Eastern Desert, Egypt : taxonomy, biostratigraphy and palaeobiogeographic implications

Autorzy:

Nagm, E.
Wilmsen, M.

Powiązania:

https://bibliotekanauki.pl/articles/139381.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

amonity
biostratygrafia
Egipt
górna kreda
paleobiogeografia
paleontologia systematyczna
ammonites
biostratigraphy
Egypt
palaeobiogeography
systematic palaeontology
Upper Cretaceous

Opis:

In Egypt, marine Upper Cenomanian.Turonian strata are well exposed in the Eastern Desert. The southernmost outcrops are located in the central part of Wadi Qena, where the lower Upper Cretaceous is represented by the fossiliferous Galala and Umm Omeiyid formations. From these strata, numerous ammonites have been collected bed-by-bed and 13 taxa have been identified, which are systematically described herein. Four of them (Euomphaloceras costatum, Vascoceras globosum globosum, Thomasites gongilensis and Pseudotissotia nigeriensis) are recorded from Egypt for the first time. The ammonite ranges are used for a biostratigraphic zonation of the lower Upper Cretaceous succession in the northern and central part of Wadi Qena: the Upper Cenomanian.Lower Turonian has been subdivided into five biozones (including a new upper Lower Turonian biozone based on the occurrence of Pseudotissotia nigeriensis), and one biozone has been recognized in the Upper Turonian. Palaeobiogeographically, the ammonite assemblage has a Tethyan character. During the Early Turonian, influences of the Vascoceratid Province were predominant with strong affinities to typical Nigerian faunas. This shows the significance of faunal exchange between Egypt and Central and West Africa via the Trans-Saharan Seaway. Compared to contemporaneous ammonoid faunas from the northern part of the Eastern Desert, Boreal influences are much less obvious in Wadi Qena. Thus, the present study greatly enhances the knowledge of the Late Cretaceous palaeobiogeography and biostratigraphy of Egypt and adjacent areas.

Źródło:

Acta Geologica Polonica; 2012, 62, 1; 63-89
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 95.

Tytuł:

The first multituberculate from the Uppermost Cretaceous of the Gobi Desert (Mongolia)
Pierwszy multituberkulat z najwyższej kredy pustyni Gobi (Mongolia)
Pervye nakhodki multituberkuljata w krowle mela pustyni Gobi (Mongolija)

Autorzy:

Kielan-Jaworowska, Z.
Sochava, A.V.

Powiązania:

https://bibliotekanauki.pl/articles/22892.pdf

Data publikacji:

1969

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

first record
multituberculate
mammal
Buginbaatar transaltaiensis
new genus
new species
Upper Cretaceous
Cretaceous
Gobi Desert
Mongolia

Źródło:

Acta Palaeontologica Polonica; 1969, 14, 3
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

Marsupites (Crinoidea, Uintacrinida) jako narzędzie datowania skał górnosantońskich w krach glacjalnych wschodniej Polski
Marsupites (Crinoidea, Uintacrinida) as a stratigraphic marker of the Upper Santonian strata in the glacial rafts of eastern Poland

Autorzy:

Łukowiak, M.
Gorzelak, P.

Powiązania:

https://bibliotekanauki.pl/articles/2074491.pdf

Data publikacji:

2006

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

kra glacjalna
Marsupites
liliowce
datowanie skał
santon
górna kreda
glacial rafts
Bourgueticrinidae
Santonian
Upper Cretaceous
Polska

Opis:

In the Santonian chalk glacial deposits exposed at Kornica (eastern Poland) an assemblage of echinoderms comprising asteroids, echinoids, ophiuroids, and crinoids (comatulids, roveacrinids, and Bourgueticrinus, Isocrinus, Isselicrinus, Marsupites) is documented. The Santonian age of sediments at Kornica has been determined with foraminifers. Numerous occurrences of the crinoid Marsupites testudinarius, indicate their late Santonian age.

Źródło:

Przegląd Geologiczny; 2006, 54, 9; 784-786
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 97.

Tytuł:

Conventional and high-resolution heavy mineral analyses applied to flysch deposits : comparative provenance studies of the Ropianka (Upper Cretaceous–Paleocene) and Menilite (Oligocene) formations (Skole Nappe, Polish Carpathians)

Autorzy:

Salata, D.
Uchman, A.

Powiązania:

https://bibliotekanauki.pl/articles/2060326.pdf

Data publikacji:

2013

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

heavy minerals
high-resolution
correlation
sedimentary provenance
flysch
Outer Carpathians
Skole Nappe

Opis:

Conventional and high-resolution analyses of heavy minerals from the gravity flow-deposited sandstones of the Campanian–Maastrichtian interval of the Ropianka (Upper Cretaceous–Paleocene) and Menilite (Oligocene) formations of the Polish Carpathians display similar compositions in terms of mineral species. Zircon, tourmaline, rutile, garnet, staurolite and kyanite belong to the main constituents in both formations. Apatite is common in the Ropianka Fm., while the Menilite Fm. almost lacks this mineral. Furthermore, individual hornblende grains were found in the Ropianka Fm., while andalusite is present only in the Menilite Fm. The Ropianka Fm. is relatively richer in zircon, tourmaline, garnet and apatite, while the Menilite Fm. contains more staurolite and kyanite. Zircon and tourmaline colour and morphological varieties are similar in both formations. The similarities of the heavy mineral assemblages studied suggest origin of these minerals from lithologically similar rocks. Negative correlations between the zircon + tourmaline + rutile (ZTR) values and the content of garnet and staurolite in the Ropianka Fm. may indicate, to a large extent, first-cycle delivery of garnet and staurolite to the formation. Negative, but low, correlation valid only for ZTR and garnet and positive correlations for ZTR and staurolite and kyanite in the Menilite Fm. suggest delivery of these minerals from sedimentary rocks or/and palimpsest sediments. The data obtained on mineral relationships and their morphology suggest mixed first-cycle and recycled provenance of the heavy minerals studied. Additionally, the first-cycle material input seems to be larger during the Ropianka Fm. sedimentation, while during the deposition of Menilite Fm. the contribution of material delivered from erosion of recycled sediments appears more prominent. The heavy mineral evidence suggests a change at the northern margin of the Skole Basin from an immature passive margin with a high relief during sedimentation of the Campanian–Maastrichtian part of the Ropianka Fm. to a mature passive margin with a low relief during sedimentation of the Menilite Fm.

Źródło:

Geological Quarterly; 2013, 57, 4; 649--664
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 98.

Tytuł:

First record of the ichnofossil Atollites from the Late Cretaceous of the Northern Apennines, Italy

Autorzy:

Serpagli, E

Powiązania:

https://bibliotekanauki.pl/articles/20846.pdf

Data publikacji:

2005

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

Apennines Mountains
ichnofossil
paleoichnology
Italy
Cretaceous
Late Cretaceous
Atollites
Upper Cretaceous
sediment
radial trace fossil
Attolites italicum
paleontology

Opis:

A new radial trace fossil, Atollites italicum ichnosp. nov., is reported from Upper Cretaceous sediments of the Northern Apennines (Italy). It is made up of several cylinder−club systems, which are interpreted as radiating in a possible faint spiral pattern from a central shaft. The pre−diagenetic reconstruction of the Atollites structure is attempted for the first time. The trace fossil may be attributed to small crustaceans or, less probably, it represents a feeding burrow of other deposit feeders.

Źródło:

Acta Palaeontologica Polonica; 2005, 50, 2
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 99.

Tytuł:

The Boquillas Formation of the Big Bend National Park, Texas, USA, a reference Cenomanian through Santonian (Upper Cretaceous) carbonate succession at the southern end of the Western Interior Seaway

Autorzy:

Cooper, D. A.
Cooper, R.W.
Stevens, J. B.
Stevens, M. S.
Cobban, W. A.
Walaszczyk, I.

Powiązania:

https://bibliotekanauki.pl/articles/139039.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Boquillas Formation
Upper Cretaceous
US Western Interior Seaway
lithostratigraphy
biostratigraphy
paleoenvironment
formacja Boquillas
górna kreda
litostratygrafia
biostratygrafia
paleośrodowisko

Opis:

The upper lower Cenomanian through middle Santonian (Upper Cretaceous) of the Boquillas Formation in the Big Bend Region of Trans-Pecos Texas consists of a marine carbonate succession deposited at the southern end of the Western Interior Seaway. The Boquillas Formation, subdivided into the lower, c. 78 m thick limestone-shale Ernst Member, and the upper, c. 132 m thick limestone/chalk/marl San Vicente Member, was deposited in a shallow shelf open marine environment at the junction between the Western Interior Seaway and the western margins of the Tethys Basin. Biogeographically, the area was closely tied with the southern Western Interior Seaway. The richly fossiliferous upper Turonian, Coniacian and lower Santonian parts of the Boquillas Formation are particularly promising for multistratigraphic studies.

Źródło:

Acta Geologica Polonica; 2017, 67, 4; 547-565
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 100.

Tytuł:

Mineralogy and geochemistry of Upper Cretaceous Mazıdağı Phosphorite Deposits from the Northern Arabian Plate (Mardin, Turkey)
Mineralogia i geochemia górnokredowych złóż fosforytów Mazıdağı z płyty północno-arabskiej (Mardin, Turcja)

Autorzy:

Tetiker, Sema

Powiązania:

https://bibliotekanauki.pl/articles/27311663.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN

Tematy:

cerium anomalies
Karababa formation
phosphorite deposit
rare earth element
anomalie ceru
formacja Karababa
złoże fosforytu
pierwiastki ziem rzadkich

Opis:

In the Mardin-Mazıdağı region, which corresponds to the northern Arabian Plate, layers containing marine phosphorite rocks are found within the Karababa Formation (Upper Cretaceous). The Karataş member contains phosphorites and carbonate rocks with nodular chert geodes and fossils. The phosphorite and micritic limestones contain invertebrate fossil fragments and materials such as optical isotropic pelletic apatite minerals, angular/subangular and plated fish bone fragments, and brachiopod shells. SEM (scanning electron microscopy) results show that the apatite minerals are either spherical or ellipsoidal in shape and their size varies between 100-200 µm. According to X-ray diffraction (XRD) examinations, the rocks contain apatite (carbonate rich fluorapatite; CFA), carbonate (calcite, dolomite), silica (quartz and opal-CT), little feldspar, and clay (smectite, palygorskite/sepiolite, kaolinite, illite, chlorite, mixed layered chlorite-vermiculite (C-V) and illite-vermiculite (I-V). The average major and trace elements found in the phosphorite include P2O5 (35.41 wt.%), REEs (44.57 ppm), Y (52.85 ppm), and U (5.45 ppm). The Mazıdağı phosphorite analysis indicates that the conditions are slightly oxic, which is supported by their slightly negative Ceanom average values (–0.30), low Ce/La ratios (0.32), and a V/(V + Ni) mean of 0.93 ppm. All the recoded values of the average REE for the study area are considerably lower than those in Iraq (84.30 ppm), Tunisia (400.3 ppm), Morocco (571.75 ppm) and Jordan (187 ppm). It is inferred that mineral formation processes are affected by the biogenic and biogeochemical activities that occurred in conjunction with the changes in sea level driven by the tectonic conditions associated with the evolution of the Neotethys Ocean.
W regionie Mardin-Mazıdağı, który odpowiada północnej płycie arabskiej, w formacji Karababa (górna kreda) znajdują się warstwy zawierające morskie skały fosforytowe. Jednostka Karataş zawiera fosforyty i skały węglanowe ze sferoidalnymi geodami czertów (konkrekcji) i skamieniałościami. Wapienie fosforytowe i mikrytyczne zawierają skamieniałe fragmenty bezkręgowców i materiały takie jak: optycznie izotropowe granulowane minerały apatytowe, kanciaste/nieco kanciaste i blaszkowate fragmenty kości ryb oraz muszle ramienionogów. Wyniki SEM (skaningowej mikroskopii elektronowej) pokazują, że minerały apatytu mają kształt kulisty lub elipsoidalny, a ich wielkość waha się między 100-200 μm. Według badań dyfrakcji rentgenowskiej (XRD) skały zawierają apatyt (fluoroapatyt bogaty w węglany; CFA), węglan (kalcyt, dolomit), krzemionkę (kwarc i opal-CT), niewiele skalenia i glinę (smektyt, palygorskit/sepiolit), kaolinit, illit, chloryt, mieszany warstwowy chloryt-wermikulit (C-V) i illit-wermikulit (I-V). Główne i śladowe pierwiastki występujące w fosforynie zawierają średnio P2O5 (35,41% wag.), REE (44,57 ppm), Y (52,85 ppm) i U (5,45 ppm). Analiza fosforytów Mazıdağı wskazuje, że warunki są lekko tlenowe, co potwierdzają ich nieco ujemne średnie wartości Ceanom (–0,30), niski stosunek Ce/La (0,32) i średnia V/(V + Ni) wynosząca 0,93 ppm. Wszystkie zarejestrowane wartości średnie REE dla badanego obszaru są znacznie niższe niż w Iraku (84,30 ppm), Tunezji (400,3 ppm), Maroku (571,75 ppm) i Jordanii (187 ppm). Wywnioskowano, że na procesy formowania się minerałów mają wpływ działania biogenne i biogeochemiczne, które wystąpiły w połączeniu ze zmianami poziomu morza spowodowanymi warunkami tektonicznymi związanymi z ewolucją Oceanu Neotetydy.

Źródło:

Gospodarka Surowcami Mineralnymi; 2023, 39, 2; 37--69
0860-0953

Pojawia się w:

Gospodarka Surowcami Mineralnymi

Dostawca treści:

Biblioteka Nauki

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