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Wyświetlanie 1-6 z 6
Tytuł:
Scleractinian corals of suborders Pachythecaliina and Rhipidogyrina: discussion on similar ities and description of species from Štramberk-type limestones, Polish Outer Carpathians
Autorzy:
Kołodziej, B.
Powiązania:
https://bibliotekanauki.pl/articles/191510.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
corals
Pachythecaliina
Rhipidogyrina
taxonomy
phylogeny
Jurassic
Cretaceous
Outer Carpathians
Opis:
Similarities between scleractinian corals from extinct suborders Pachythecaliina Eliášová 1976 and Rhipidogyrina Roniewicz 1976 are discussed. Corals of the former suborder are considered by some authors as possible descendants of Palaeozoic Rugosa because of their unusual skeletal characters. Some rhipidogyrinans, especially the family Aulastraeoporidae, despite their different septal microstructure, share more common features with pachythecaliinans than with other scleractinians. The following skeletal features are discussed to show similarities between these two suborders: (1) wall microstructure and its relations to septa, (2) corallite bilateral symmetry, (3) marginarium, (4) lonsdaleoid and apophysal septa, and (5) internal septal margin. These similarities can be explained by convergence, although phylogenetic relationships of both suborders can not be excluded. This hypothesis needs to be verified by more studies, especially on early blastogeny of rhipidogyrinans and wall microstructure of pachythecaliinans. The systematic part gives descriptions of the discussed coral suborders occuring in the Štramberk-type limestones, the Polish Outer Carpathians (Tithonian-?Berriasian, ?Valanginian). Similarly as in the Štramberk Limestone (Moravia), pachythecaliinans are highly diversified (17 species, 12 genera, including Pachythecophyllia eliasovae n.gen., n.sp.). Rhipidogyrinans are represented by 4 species of 4 genera, including ?Ogilvinella morycowae n.sp.
Źródło:
Annales Societatis Geologorum Poloniae; 2003, 73, No 3; 193-217
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowakocoenia cieszynica gen. et sp. nov. (Scleractinia) and its Barremian-Aptian age based on dinocysts (Polish Outer Carpathians)
Koralowiec Nowakocoenia cieszynica gen. et sp. nov. i jego wiek w oparciu o dinocysty (barrem-apt, Polskie Karpaty Zewnętrzne)
Autorzy:
Kołodziej, B.
Gedl, E.
Powiązania:
https://bibliotekanauki.pl/articles/191264.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Scleractinian coral
dinocysts
Barremian-Aptian
Polish Outer Carpathians
Opis:
A colonial scleractinian coral Nowakocoenia cieszynica gen. et sp. nov. (suborder Stylinina, Incertae familiae) from Rudzica near Bielsko-Biała (Outer Carpathians) is described. The new genus differs from other plocoidal and cerioidal stylininas mainly in irregularity in development of septa and the presence of wall developed in advance of septa. Exact locality and geological position of the coral specimen is unknown. Palynological analysis of calcareous sandstone forming a thin coat around the coral specimen allowed age determination. 65 species (including 21 in open nomenclature) of dinoflagellate cysts were recognized. Co-occurrence of Cepadinium ventriosum and Phoberocysta neocomica indicate the latest Barremian-Early Aptian age of this deposit. The coral was synchronically or penesynchronically redeposited from shallow water environment to flysch basin. Age and lithology of the sediment coating the specimen suggest the Grodziszcze Sandstones as coral-bearing deposits.
W pracy opisano kolonijnego koralowca sześciopromiennego (Scleractinia) Nowakocoenia cieszynica gen. et sp. nov. (podrząd Stylinina, Incertae familiae) pochodzącego z Rudzicy koło Bielska-Białej (Karpaty zewnętrzne). Spośród innych plokoidalnych i cerioidalnych stylininów nowy rodzaj wyróżnia się przede wszystkim nieregularnym rozwojem septów oraz obecnością ściany wyprzedzającej w rozwoju septa. Dokładna lokalizacja oraz pozycja geologiczna okazu nie jest znana. Określenie wieku umożliwiła analiza palinologiczna wapnistego piaskowca tworzącego cienką powłokę wokół kolonii. Stwierdzono zespół 65 gatunków dinocyst (w tym 21 w nomenklaturze otwartej). Współwystępowanie gatunków Cepadinium ventriosum i Phoberocysta neocomica wskazuje na najpóźniejszy barrem-wczesny apt. Kolonia koralowca została synchronicznie lub penesynchronicznie redeponowana ze środowiska płytkowodnego do basenu fliszowego. Wiek i litologia piaskowca oblekającego kolonię koralowca sugerują, że osad ten reprezentuje piaskowce grodziskie.
Źródło:
Annales Societatis Geologorum Poloniae; 2000, 70, 2; 181-192
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microencruster-microbial framework and synsedimentary cements in the Štramberk Limestone (Carpathians, Czech Republic) : Insights into reef zonation
Autorzy:
Hoffmann, M.
Kołodziej, B.
Skupien, P.
Powiązania:
https://bibliotekanauki.pl/articles/191832.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
coral reefs
carbonate platforms
microframework
sedimentary breccia
Moravia
Jurassic
Cretaceous
Opis:
The Štramberk Limestone (Tithonian–lower Berriasian) was developed on a northerly located, isolated intra-Tethyan carbonate platform. It is composed of various facies that can be observed in olistoliths and blocks embedded in the Cretaceous flysch of the Outer Carpathians in Moravia (Czech Republic). Corals, microbialites, microencrusters and synsedimentary cements contributed on various scales to the reef framework. The importance of corals and some microencrusters to the formation of the Štramberk reef complex is well recognized, while other components received less attention in previous studies. Two end members of boundstone types are described from the Kotouč Quarry, near Štramberk. Boundstone type A is dominated by phaceloid (branching-type) corals, encrusted by microbialites and microencrusters, in particular photophile species (“Lithocodium-Bacinella”, Koskinobullina socialis Cherchi et Schroeder, Iberopora bodeuri Granier et Berthou). Boundstone type B is composed of microencrusters, microbialites and synsedimentary isopachous fibrous cements, while corals are absent or subordinate. Microencrusters [Crescentiella morronensis (Crescenti), Labes atramentosa Eliášová, Perturbatacrusta leini Schlagintweit et Gawlick, Radiomura cautica Senowbari-Daryan et Schäfer, thin encrusting calcified sponges] are main biotic components of the microencruster-cement boundstone. Some identified microencrusters are known only or mostly from intra-Tethyan carbonate platforms. Except for C. morronensis, other common microencrusters in the coral-microbial boundstone (type A) are rare in the microencruster-cement boundstone (type B). The depositional setting of boundstone type A corresponds to a low-energy environment of an inner platform. Boundstone type B, until now not recognized in the Štramberk Limestone, was developed in a high-energy, upper fore-reef slope environment. Other important facies in the Kotouč Quarry are reef-derived breccias: matrix-supported breccia and clast-supported breccia with radiaxial-fibrous cement (showing some similarities to Triassic “evinosponges” cement), interpreted as being dominantly synsedimentary (pre-burial). The preliminary studies by the present authors, supported by observations under cathodoluminescence, highlight the significance of synsedimentary cementation for the formation of a boundstone framework (type B) and the stabilization of fore-reef, slope deposits.
Źródło:
Annales Societatis Geologorum Poloniae; 2017, 87, 4; 325-347
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prolific development of pachythecaliines in Late Barremian, Bulgaria: coral taxonomy and sedimentary environment
Autorzy:
Kołodziej, B.
Ivanov, M.
Idakieva, V.
Powiązania:
https://bibliotekanauki.pl/articles/191755.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
corals
taxonomy
carbonate platform
palaeoecology
Cretaceous
Fore-Balkan
Bulgaria
Opis:
Diversified and abundant corals of the suborder Pachythecaliina (order Hexanthiniaria) are described from Upper Barremian, biostromal reefs of the Emen Formation, Lovech Urgonian Group, north central Bulgaria. The corals are mostly of the phaceloid growth form and represent 14 species (six new), 12 genera (three new), belonging to five families. Pachythecaliines occur with the small, monopleurid cylindrical rudist Mathesia darderi. The rudists frequently are densely clustered, occur between coral branches or are in contact with them. Other corals, with the exception of the phaceloid Calamophylliopsis, and other rudists, are rare. Non-laminated microbialite crusts provided additional, structural support for bioconstruction development. Microbialites (automicrites) can be interpreted as a product of microbial activity, or alternatively, as a result of carbonate precipitation, brought about by non-living organic substrates (organomineralization s.s.). In addition to microbialites, metazoans are encrusted by heterotrophic skeletal microorganisms, while photophilic and oligotrophic microencrusters, usually common in other coral-bearing limestones of the Emen Formation, are very rare. The section at the Rusalya Quarry (NW of Veliko Tarnovo), about 42 m thick, provides the sedimentary and environmental context for the reefal biostromes. The vertical biotic and sedimentary succession displays a general shallowing trend: from the outer carbonate platform with bioclastic limestones containing small boundstone patches (corals, but not pachythecaliines, Lithocodium aggregatum), to the inner platform with rudist biostromes. The pachythecaliine-rich biostromes, 2.5 m thick, were developed in a low-energy environment, referred to the distal part of the rudist-dominated area of the platform. The development of microbialites was facilitated by a low sedimentation rate, and possibly by increased nutrient level. Only poorly diversified and non-phaceloid pachythecaliines occur in other coral-rich limestones and marls of the Urgonian complex in Bulgaria. The assemblage described is the most remarkable, Early Cretaceous coral community worldwide, with regard to pachythecaliines. Phaceloid pachythecaliines are only more common in the Upper Jurassic rocks, being particularly diversified in the Tithonian–Lower Berriasian Štramberk Limestone (Czech Republic) and its equivalent in the Polish Outer Carpathians. However, their sedimentary context differs from that described for the corals of the Emen Formation.
Źródło:
Annales Societatis Geologorum Poloniae; 2012, 82, 4; 291--330
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oxfordian to Valanginian palaeoenviron- mental evolution on the western Moesian Carbonate Platform: a case study from SW Bulgaria
Autorzy:
Ivanova, D.
Kołodziej, B.
Koleva-Rekalova, E.
Roniewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/191387.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Oxfordian-Valanginian
biostratigraphy
carbonate sedimentology
reefs
Moesian Platform
Lyubash unit
Bulgaria
Opis:
Three sections (Rebro, Lyalintsi and Velinovo) of the Upper Jurassic-Lower Cretaceous carbonate sequences from the Lyubash unit (Srednogorie, Balkanides, SW Bulgaria) have been studied for elucidation of biostratigraphy and palaeoenvironmental evolution. Palaeontological studies of foraminifera, supplemented by studies of calcareous dinoflagellate cysts and corals, enabled the determination of the Oxfordian-Valanginian age of the analysed sequences. They were deposited on the Dragoman Block (western part of the Moesian Platform), and during Mid-Late Cretaceous included to the Srednogorie. A possible Middle to Late Callovian age of the lowermost part (overlying the Bajocian-Lower Bathonian Polaten Formation) of the studied sections assumed till now has not been confirmed by the present studies. Eleven facies have been distinguished and attributed to depositional environments. Marine sedimentation on a homoclinal ramp started in the Oxfordian and till the Early Kimmeridgian - in all three sections - was dominated by fine-grained peloidal-bioclastic wackestones to grainstones. Since the Late Kimmeridgian, when a rimmed platform established, facies pattern underwent differentiation into (i) the inner platform (lagoon and tidal flat facies) - only in Velinovo, (ii) reef and peri-reef facies/bioclastic shoals - mainly in Lyalintsi, and (iii) platform slope - mainly in Rebro. Sedimentation generally displays a shallowing-upward trend. Two stages in evolution of the rimmed platform are postulated. The mobile stage lasting till the Tithonian/Berriasian boundary was followed by a more stable stage in the Berriasian to Valanginian time. Reefs are developed mainly as coral-microbial biostromes, lower coral bioherms or coral thickets, in the environment of moderate energy and sedimentation. They contain highly diversified corals (72 species). Micro- bialites contributed to the reef framework, but they never dominated. Locally, microencrusters and cement crusts formed important part of reefal framework. During the mobile stage of the platform evolution a relative sea-level rise interrupted reef development, as evidenced by intercalations of limestones with Saccocoma. During the second stage high carbonate production and/or regressive eustatic events, not balanced by subsidence, decreased accommodation space, limiting reef growth and enhancing carbonate export to distal parts of the platform.
Źródło:
Annales Societatis Geologorum Poloniae; 2008, 78, No 2; 65-90
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Injection dykes as evidence of Campanian synsedimentary tectonics on the Kraków Swell, southern Poland
Autorzy:
Kołodziej, B.
Szulc, J.
Machaniec, E.
Kędzierski, M.
Duda, M.
Powiązania:
https://bibliotekanauki.pl/articles/191882.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
injections dykes
synsedimentary tectonics
biostratigraphy
Late Cretaceous
Campanian
Kraków Swell
Polska
Opis:
The topmost part of the Oxfordian limestones, building the Zakrzówek Horst in Kraków, is featured by a network of minute fissures, filled with Upper Cretaceous limestones. Fissures are dominantly subhorizontal, anastomosing and polygonal in plane. They are filled with white limestones representing mostly foraminiferal- calcisphere wackestones, with subordinate amount of quartz pebbles and fragments of stromatolite coming from the latest Turonian-?Early Coniacian conglomerate overlying Oxfordian basement. The fissures are seismically- induced injection dykes. In contrast to gravitationally-filled neptunian dykes the recognised injection dykes were filled by overpressured soft sediments. Foraminifera within some dykes are abundant, and dominated by planktonic forms, which indicate the Early/Late Campanian age (Globotruncana ventricosa and Globotruncanita calcarata zones) of the filling, and hence date also the synsedimentary tectonics. Abundant and diversified keeled globo- truncanids in the Campanian of the Kraków region are recognised for the first time. Other important findings at the studied section include karstic cavities featuring the surface of the Oxfordian bedrock filled with conglomerates of the latest Turonian-?Early Coniacian age based on foraminifera and nannoplankton, and lack of Santonian deposits, which elsewhere are common in the Upper Cretaceous sequences in the Kraków region. The discovered Campanian dykes provide new evidence for the Late Cretaceous tectonic activity on the Kraków Swell related to the Subhercynian tectonism, which resulted among others in stratigraphic hiatuses and unconformities characte- ristic of the Turonian-Santonian interval of this area.
Źródło:
Annales Societatis Geologorum Poloniae; 2010, 80, No 3; 285-301
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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