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Tytuł:
Integrated microfacies, macrobenthos and trace-fossil analysis of the lower‒middle Miocene succession of Gebel Gharra, Cairo-Suez District, Egypt
Autorzy:
Mandor, Mona
El Hedeny, Magdy
El-Sabbagh, Ahmed
Nagm, Emad
Abdelaal, Abdelaal
Rashwan, Mohamed
Mansour, Heba
Powiązania:
https://bibliotekanauki.pl/articles/27311287.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Macrobenthos
taphonomy
trace fossils
palaeoecology
palaeoenvironment
lower Miocene
middle Miocene
Egypt
Opis:
The palaeoecology and palaeoenvironments of the lower–middle Miocene succession in Gebel Gharra, NW of Suez, Egypt, are interpreted, on the basis of a detailed study of microfacies, trace fossils, and macrofaunal benthic assemblages. This succession consists of a lower siliciclastic part (the Gharra Formation) and a carbonate-dominated upper part (the Geniefa Formation), corresponding to a general transgression-regression cycle. Facies characteristics indicate depositional palaeoenvironments, ranging from supratidal, lagoonal, to shoal settings on an inner ramp that was influenced proximally by clastic input. At least seven ichnotaxa were recorded in the lower Miocene Gharra Formation, representing suites of the Skolithos ichnofacies. Among them, the ichnogenus Polykladichnus is recorded for the first time in Egypt. The macrobenthic taxa identified in 13 statistical samples are grouped into five assemblages (A–E) that are described and interpreted as the remains of communities. The faunal distribution and trophic structure of most of these assemblages confirm the existence of relatively stable and low-stress conditions. However, the trophic structure of the assemblages reflects the influence of particular environmental parameters, the dissolution of aragonitic shells and/or sample-size effects. Environmental parameters, controlling the distribution of trace and/or body fossils, include substrate consistency, bathymetry, water energy, productivity level, rate of sedimentation, salinity, and oxygen availability. The results of integrated lithoand biofacies analysis confirm that the succession studied was deposited in different environmental settings, providing perfect conditions for the occurrence and preservation of trace-fossil and macrobenthos assemblages.
Źródło:
Annales Societatis Geologorum Poloniae; 2023, 93, 4; 381--409
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pioneer colonization, evidenced by Rhizocorallium in the Middle Triassic of Poland
Autorzy:
Stachacz, Michał
Powiązania:
https://bibliotekanauki.pl/articles/27311290.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
trace fossils
bioturbation
Muschelkalk
Ichnotaxonomy
palaeoecology
post-extinction biota recovery
Opis:
A large collection of the trace fossil Rhizocorallium from the Middle Triassic of the Polish part of the Germanic Basin (Peri-Tethys) is analysed and their ichnotaxonomical classification presented. Special attention is given to the deep form of Rhizocorallium with a vertical retrusive spreite, filled with faecal pellets, with detailed documentation of this structure, based on isolated specimens and serial sections. This analysis also reveals ∩-shaped and deep, protrusive structures. A former interpretation of Rhizocorallium as a rapidly formed fugichnion is not followed here; instead, an interpretation of the trace fossil as a complex fodinichnion is proposed. Scavengers and their relation to crinoid meadows, as well as predators, are indicated as potential tracemakers of some Rhizocorallium. Although Rhizocorallium is common throughout the Middle Triassic, unusual forms and the domination of substrates by Rhizocorallium in general mostly occur in the transgressive system of the lowermost Muschelkalk, and in regressive, marginal facies of the lower Keuper. Such a distribution of unusual forms of Rhizocorallium is interpreted as representing opportunistic, pioneer burrow assemblages that developed during the long-term benthic recovery after the P-T crisis, or in unfavourable conditions generally. Moreover, dynamic conditions with mixed clastic-carbonate sedimentation and rapidly varying salinity promoted smooth transitions from Rhizocorallium to Diplocraterion. Similar successions of dominant trace-fossil assemblages, of comparable sizes, occur in many sections around the world and demonstrate the record of slow recovery that continued through the Middle Triassic. The illustrated record of evolution of the Middle Triassic Rhizocorallium assemblages in Poland documents the last two stages of benthos recovery after the P-T boundary. A similar situation is observed around the world and, in many cases, great abundance of Rhizocorallium seems to be an indication of pioneer burrowing in dynamic, unfavourable environments.
Źródło:
Annales Societatis Geologorum Poloniae; 2023, 93, 4; 363--379
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Skeletons of Seirocrinus Subangularis Crinoids (Crinoidea, Echinodermata) (Miller, 1821) from the Collection of the Nature Education Centre of the Jagiellonian University
Autorzy:
Kajdas, Bartłomiej
Salamon, Mariusz
Głaz, Joanna
Płachno, Bartosz J.
Powiązania:
https://bibliotekanauki.pl/articles/27720399.pdf
Data publikacji:
2023-09-28
Wydawca:
Krajowy Ośrodek Badań i Dokumentacji Zabytków
Tematy:
Nature Education Centre of the Jagiellonian University
Krakow
fossils
crinoids
echinoderms
the Jurrasic
Opis:
The Nature Education Centre of the Jagiellonian University in Krakow has in its collection a spectacular fossil of a Jurassic crinoid, in literature known as Seirocrinus subangularis (Miller). Only several museums in Central Europe can boast such a perfectly preserved and complete specimen of Seirocrinus. As seen against Polish museum collections the slab in question is an outstanding object. That very form was a cosmopolitan and pseudoplanktonic crinoid species spread throughout Asia, Europe, and Northern America, yet it has never been documented in Poland. The particular specimen reached Poland in the mid-19th century from Germany to enrich the collection of the Mineralogical Cabinet. The paper presents the turbulent history of the slab with some dozen specimens of echinoderms on it, the story which will shortly have a happy end, since it will be permanently placed as a geological exhibit at the Nature Education Centre of the Jagiellonian University.
Źródło:
Muzealnictwo; 2023, 64; 128-137
0464-1086
Pojawia się w:
Muzealnictwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Summary of a decade of research at the Owadów–Brzezinki Lagerstätte (Tithonian, central Poland): A review and perspectives for the future
Autorzy:
Błażejowski, Błażej
Weryński, Łukasz
Wierzbowski, Andrzej
Michalska, Monika
Hryniewicz, Krzysztof
Uchman, Alfred
Kugler, Stanisław
Bącal, Paweł
Hołda-Michalska, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/28883741.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Late Jurassic
Tithonian
marine fossils
terrestrial fossils
palaeobiogeography
palaeontology
późna jura
Tytonian
skamieniałości morskie
skamieliny ziemskie
paleobiogeografia
paleontologia
Opis:
For over ten years, the Lower to Upper Tithonian boundary beds cropping out in the Owadów–Brzezinki quarry have yielded numerous fossils of ammonites, bivalves, brachiopods, xiphosurans, decapods, insects, and vertebrates – including actinopterygian fishes and various reptiles and others, all of which exhibit fine preservation of their anatomical details due to special environmental conditions during their fossilization. The Owadów–Brzezinki section is also important for stratigraphical correlations because it contains ammonite faunas indicative of the NE European and NW European Subboreal zonal schemes, as well as Tethyan calpionellids. The whole faunal as- semblage, which represents taxa of many iconic groups of Mesozoic animals, has created the opportunity to establish the ‘Owadów– Brzezinki geopark’, a geoeducation area where the public, and especially the young, can learn about the beauty of the natural history of the region.
Źródło:
Volumina Jurassica; 2023, 21; 83--98
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early Jurassic dinosaur-dominated track assemblages, floristic and environmental changes in the Holy Cross Mountains region, Poland
Autorzy:
Pacyna, Grzegorz
Ziaja, Jadwiga
Barbacka, Maria
Pieńkowski, Paweł
Jarzynka, Agata
Niedźwiecki, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2201217.pdf
Data publikacji:
2022
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Mesozoic
ecosystems
tetrapod tracks
plant macrofossils
palynomorphs
trace fossils
Opis:
The Early Jurassic succession of the Holy Cross Mountains region in Poland offers a rare opportunity to study ecosystem complexity during the evolution and diversification of early dinosaurs, especially herbivorous ones. The section consists of continental and coastal deposits containing fossil assemblages spanning nearly 25 My of changes in terrestrial plants and some groups of invertebrates and tetrapods. Based on macrofossils and pollen and spores, the broader characteristics of the flora in this succession are presented. The floral assemblages show typical Early Jurassic characteristics and contain lycopsids, sphenopsids, ferns, cycadaleans, bennettitaleans, gnetaleans and ginkgoaleans, as well as conifers, and are similar to other Hettangian–Toarcian floral successions in Europe, showing the presence of a vast coniferous forest dominated by Hirmeriella in the early Hettangian, replaced by ginkgophyte-dominated floras in younger stages and araucarian conifer-dominated forests in the late Pliensbachian. Dinosaurs are documented mainly from their trace fossils (tracks and coprolites). Six distinct track assemblages (stratigraphically separated ichnoassemblages) of different ages can be identified. Current evidence indicates that while Anomoepus tracks are abundant throughout the long Hettangian–late Pliensbachian interval, medium-sized to large ornithischian tracks do not occur below the lower–middle Hettangian transition zone, associated with the first major marine transgression in the region. Hettangian strata with different theropod tracks (Grallator, Anchisauripus, Eubrontes, Kayentapus, cf. Megalosauripus), small Anomoepus tracks, numerous medium-sized Anomoepus-like tracks, Moyenisauropus tracks, tetradactyl tracks of sauropodomorphs (cf. Pseudotetrasauropus) and oval-shaped tracks of sauropods (Parabrontopodus) significantly contrast with the higher part of the Lower Jurassic succession (upper Pliensbachian Drzewica Formation and middle–upper Toarcian Borucice Formation) containing new types of medium-sized to large theropod tracks (Therangospodus), small and medium-sized bird-like tridactyl tracks (cf. Trisauropodiscus, cf. Anomoepus), exceptionally large, oval-shaped sauropod tracks (Sauropoda indet.), and new types of medium-sized and large ornithischian tracks (cf. Deltapodus, cf. Anomoepus). This points to a noticeable difference between the Hettangian and late Pliensbachian–Toarcian dinosaur ichnofaunas and may facilitate the study of regional and global changes and correlations. Both the palaeofloras and dinosaur trace fossils document ecosystem diversity and ecosystem changes, presented here in review form. The nature of these changes requires more detailed study, but preliminary results suggest the occurrence of rather complex and pronounced transformations in the dinosaur communities of the Holy Cross Mountains region. Based on our observations, the most significant event in Early Jurassic ecosystems took place within the Hettangian (change in floristic composition, the emergence of new groups of dinosaurs), but we also found what we believe to be a record of a major faunal turnover across the late Pliensbachian–middle–late Toarcian interval.
Źródło:
Geological Quarterly; 2022, 66, 3; art. no. 29
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Priabonian, late Eocene chronostratigraphy, depositional environment, and paleosol-trace fossil associations, Pipestone Springs, southwest Montana, USA
Autorzy:
Hanneman, Debra L.
Lofgren, Donald
Hasiotis, Stephen T.
McIntosh, William C.
Powiązania:
https://bibliotekanauki.pl/articles/2216267.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Trace fossils
Coprinisphaera
Eatonichnus
Feoichnus
Fictovichnus
Rebuffoichnus
continental strata
paleosol
vertisol
alfisol
inceptisol
loessite
Chadronian
Priabonian
Renova Formation
Montana
Opis:
Sanidine 40Ar/ 39Ar ages of lapilli tuffs and the mammalian fauna of Pipestone Springs strata provide a high-resolution chronostratigraphy for upper Eocene (Priabonian) rock units in southwestern Montana. Two felsic lapilli tuffs with weighted-mean 40Ar/ 39Ar single crystal sanidine ages of 37.50±0.02 Ma and 36.00±0.20 Ma both fall within the Priabonian, late Eocene. These tuffs occur within the basal to upper part of the 55 m of exposed Pipestone Springs strata. The uppermost 15 m yield a diverse and abundant assemblage of mostly small-bodied middle Chadronian (Priabonian, late Eocene) mammals. The older lapilli tuff is an ashfall tuff, whereas the younger lapilli tuff exhibits minor aeolian reworking. The new 40Ar/ 39Ar age constraints significantly increase the age range of Pipestone Springs strata to include uppermost Duchesnean–lowermost Chadronian (Priabonian, upper Eocene) deposits in addition to its well-known mid- dle Chadronian vertebrate assemblage. These new 40 Ar/39Ar ages combined with its mammalian fauna further support Pipestone Springs strata as age-correlative to the Flagstaff Rim section in central Wyoming, and provide a basis for better determining late Eocene mammalian paleogeography and regional paleolandscapes in the United States Rocky Mountain to Great Plains areas. Loessites intercalated with paleosols dominate Pipestone Springs deposits. The recognition of loessites comprising these strata is a new depositional interpretation of Pipestone Springs strata, making these loessites some of the oldest known aeolian Eocene strata in the Great Plains–Rocky Mountains region. Pipestone Springs paleosols developed on lapilli tuffs are vertisols. Alfisols and inceptisols, developed from a parent material of volcanic glass mixed with non-volcanic grains, are the remaining paleosols within the loessite strata. Additionally, a new and important discovery in this project is the recognition that all paleosols are extensively bioturbated, containing trace fossils similar to Rebuffoichnus and newly identified trace fossils resembling Feoichnus, Eatonichnus, Fictovichnus, and Coprinisphaera.
Źródło:
Acta Palaeontologica Polonica; 2022, 67, 1; 5-20
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Grammepus Hitchcock, 1858 : A sedimentary variant of the fossil insect trackway Lithographus
Autorzy:
Getty, Patrick R.
Ward, Matthew
Simon, Jack
Powiązania:
https://bibliotekanauki.pl/articles/1835988.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
ichnology
arthropod ichnotaxonomy
intergrading trace fossils
morphological variability
sediment saturation
Opis:
The ichnogenus Grammepus, which is inferred to have been made by a winged (pterygote) insect, was differentiated from other ichnotaxa because its largest tracks were nearly continuous, forming two furrows. Otherwise, it strongly resembles the ichnogenus Lithographus. Examination of both ichnogenera indicate that the largest tracks in Lithographus can be very close together, that some specimens of Grammepus lack furrow-like tracks, and that the type specimen of the type species Grammepus erismatus has separate tracks in some places, and furrow-like ones in others. Given the lack of a feature that can consistently differentiate Lithographus and Grammepus, the latter is synonymized with the former. Experiments with the modern cricket Acheta domesticus in sediment of different saturation levels indicate that a single pterygote producer could produce both “Grammepus-” and Lithographus-like morphologies, with the former being formed in wet, soft sediment wherein the legs drag, and the latter being formed in firmer, drier sediment wherein the legs do not drag.
Źródło:
Annales Societatis Geologorum Poloniae; 2021, 91, 2; 113-120
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
A new Early Cretaceous flea from China
Autorzy:
Zhang, Y.
Shih, C.
Rasnitsyn, A.P.
Ren, D.
Gao, T.
Powiązania:
https://bibliotekanauki.pl/articles/2082117.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Insecta
Siphonaptera
Saurophthiridae
Saurophthirus
ectoparasitic insects
compression fossils
Mesozoic
Asia
Opis:
Fleas are highly specialized holometabolic insects. So far, only 16 species of fossil fleas in five families have been reported due to the rare fossil records. At present, the earliest flea fossils are reported from the Middle Jurassic Jiulongshan Formation of Northeastern China. The descriptions of these earliest species pushed back the origin of Siphonaptera by at least 40 million years. It is generally accepted that saurophthirids are the “transitional” taxa from stem Jurassic fleas to living crown groups. Herein, we described a new “transitional” flea species, Saurophthirus laevigatus Zhang, Shih, Rasnitsyn, and Gao sp. nov., from the Lower Cretaceous Yixian Formation of Northeastern China, assigned to Saurophthiridae. The new species provides new evidence to support saurophthirids as a “transitional” group. Sexual dimorphism suggests significant differences in biology of opposite sexes in Saurophthirus. Analysis of described Mesozoic species demonstrates the body size reduction from the Middle Jurassic to the Early Cretaceous. Smaller body size was likely advantageous in reducing the probability of being detected and removed by the host and in minimizing flea’s demand for blood intake and energy input, indicating the adaptation of the ectoparasitic lifestyle of fleas in their early stage of evolution.
Źródło:
Acta Palaeontologica Polonica; 2020, 65, 1; 99-107
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First discovery of Mississippian trace fossils in the Świebodzice Unit from the Witoszów region (SW Poland)
Autorzy:
Muszer, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/2060140.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Świebodzice Unit
Pogorzała Formation
Mississippian
trace fossils
fish trails
ichnofacies
Opis:
Abundant and moderately diverse trace fossil assemblage have been discovered for the first time in mudstones of the Pogorzała Formation from the Witoszów region, SW Poland. Fifteen ichnospecies including fourteen ichnogenera are described. The ichnofauna is dominated by Dictyodora liebeana and contains numerous Palaeophycus tubularis, rarer Archaeonassa fossulata, Archaeonassa isp., Chondrites cf. intricatus, Curvolithus simplex, Diplopodichnus biformis, Lockeia isp., ?Lophoctenium isp., Nereites isp., Phycosiphon isp., Protovirgularia isp., ?Psammichnites isp., Taenidium isp. and one ichnospecies of fish swimming trails, Undichna cf. britannica. Some other structures (wave ripples influenced by microbial mats and zigzag structures) also occur. The trace fossil assemblages differ in various exposures, but three of them are similar and display the Dictyodora liebeana ichnoassemblage. It is represented mostly by the ethological categories fodinichnia and repichnia, with fewer pascichnia, domichnia and cubichnia. This new data from the Świebodzice Unit sheds light on the palaeontology, age and palaeoenvironment of the Pogorzała Formation. The occurrence of D. liebeana and U. cf. britannica indicates the Mississippian age of most mudstones studied, formerly considered Upper Devonian. The trace fossil assemblage belongs to the non-standard Nereites ichnofacies, without graphoglyptids. The lithological features of mudstones, trace fossil assemblage and poverty of macrofauna, testify to their deposition in a deeper sedimentation zone below storm wave base, most likely in dysaerobic, pro-delta conditions. This study suggests that rocks containing D. liebeana may form a correlative horizon in the Świebodzice Unit.
Źródło:
Geological Quarterly; 2020, 64, 4; 838--860
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geopark Owadów-Brzezinki : niezwykłe stanowisko paleontologiczne udostępnione geoturystycznie
The Owadów-Brzezinki Geopark : aremarkable palaeontological site made available for geotourism
Autorzy:
Błażejowski, Błażej
Gieszcz, Piotr
Siuda, Robert
Tyborowski, Daniel
Wierzbowski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2075999.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
geopark
geoturystyka
skamieliny
Owadów-Brzezinki
późna jura
geotourism
fossils
Late Jurassic
Opis:
The Owadów-Brzezinki Geopark, located in the western margin of the Holy Cross Mountains in Slawno community (Łódź Voivodeship), was established in June 2019 in close vicinity of the Owadów-Brzezinki quarry. The geopark consists of palaeontological museum, educational trail and panoramic viewing platform, located along the quarry edge. The palaeontological museum exhibits unique fossils of marine and terrestrial organisms that were excavated in the quarry during the last six years. Among the most important fossils, which can be seen there are: horseshoe crabs, crustaceans, ammonites, insects, actinopterygian fish, turtles, ichthyosaurs, crocodylomorphs and pterosaurs. In addition to the original fossils, the museum presents life-size reconstructions of animals that inhabited the local seas and islands in the Late Jurassic, and plates illustating palaeogeographical and paleoenvironmental history of this site. Thanks to many important palaeontological and palaeobiological discoveries, this geopark has great geotourist and educational potential. The geopark’s design was drawn upon similar palaeontological museums such as the Jura Museum Eichstätt in the Solnhofen region and the Hauff Museum in the Holzmaden in Germany.
Źródło:
Przegląd Geologiczny; 2020, 68, 1; 45--49
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
Początki muzealnictwa geologicznego na ziemiach polskich
The origins of geological museology in Poland
Autorzy:
Skoczylas, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/2076004.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
muzea
zbiory muzealne
skały muzealne
minerały
skamieliny
museums
museum collections
museum assemblage rocks
minerals
fossils
Opis:
It is likely that the beginnings of geological museology in Poland should be associated with the collecting movement of all kinds of souvenirs and wonders of nature, often referred to as curiosities or antiquity. In 1775, Michal Mniszech proposed the creation of a national museum (Museum Polonicum). The article mentions all significant collectors of geological exhibits, including Anna Jabłonowska as one of the main figures in the beginnings of museology in Poland. The so-called public and academic and some school collections are described. The article also pays attention to social initiatives regarding financing of natural museums, including geological ones.
Źródło:
Przegląd Geologiczny; 2020, 68, 1; 21--24
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trace fossils from the Mississippian of the Piaskowa Góra section (the Intra-Sudetic Basin, SW Poland)
Autorzy:
Muszer, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1836353.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Trace fossils
Szczawno Formation
Intra-Sudetic Basin
lower Serpukhovian
Opis:
Eight ichnotaxa and enigmatic tubular forms were discovered and described for the first time from clastic deposits (the Culm facies) of the uppermost part of the Szczawno Formation (upper Mississippian) from in the Piaskowa Góra section in the northern part of the Intra-Sudetic Basin near Wałbrzych. The trace fossils are represented mostly by pascichnia and less numerous domichnia, fodinichnia and repichnia. Psammichnites plummeri and numerous Phycosiphon isp. are the most common ichnotaxa. They are accompanied by Archaeonassa fossulata, Beaconites cf. capronus, Curvolithus multiplex, Dictyodora liebeana, Palaeophycus isp., and Planolites isp. D. liebeana is described for the first time from the lower Serpukhovian. Most components of the ichnoassem-blage are typical of the Cruziana ichnofacies, but the co-occurrence of Dictyodora and Phycosiphon could indicate a transition to deeper environmental settings (the Zoophycos ichnofacies). The lithological features as well as the accompanying trace fossils, wrinkle structures and floral remains of Archaeocalamites indicate rapid sedimentation, alternating with more tranquil periods of sedimentation, in an intermediate environment between the lower offshore (the distal Cruziana ichnofacies) and the fan-delta slope (below the wave base, the Zoophycos ichnofacies). The studied trace fossils and palynological data indicate that marine conditions in the Wałbrzych area in the Mississippian prevailed locally until the early Sepukhovian.
Źródło:
Annales Societatis Geologorum Poloniae; 2020, 90, 2; 195-213
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Wyświetlanie 1-15 z 69

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