Foraminiferal biostratigraphy of the Albian and Cenomanian sediments in the Polish part of the Pieniny Klippen Belt,Carpathian Mountains |
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| Institution: | 1. Institute of Geological Sciences, Polish Academy of Sciences, Research Centre in Krakow, Senacka 1, PL-31-002 Krakow, Poland;2. Faculty of Earth Sciences, University of Silesia, B?dzinska 60, PL-41-200 Sosnowiec, Poland;1. Institute of Geology, Leibniz University Hannover, Callinstrasse 30, 30167 Hannover, Germany;2. Palaeontological Institute, University of Zürich, Karl Schmid-Strasse 4, 8006 Zürich, Switzerland;3. SFB Geological Consulting and Services, Odenwaldstrasse 18, 64372 Ober-Ramstadt, Germany |
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| Abstract: | Seven local biostratigraphic zones have been distinguished in the Albian and Cenomanian sediments of the Pieniny Klippen Belt: Hedbergella assemblage (Assemblage Zone, AZ), R. subticinensis-R. ticinensis (Concurrent Range Zone, CRZ), R. ticinensis- P. praebuxtorfi (CRZ), R. ticinensis- P. buxtorfi (Partial Concurrent Range Zone, PCRZ), P. buxtorfi- R. appenninica (CRZ), R. appenninica (Partial Range Zone, PRZ) and R. reicheli- R. green-hornensis (PCRZ), The zones are tentatively correlated with the ortho- and parastratigraphic zones of the Albian and Cenomanian. Three palaeoecological associations have been distinguished: “Czorsztyn”, shelf-upper slope, large proportion of nodosarids and miliolids; “Pieniny A” middle part of slope, oligotaxic planktonic assemblages dominant; “Pieniny B”, depth similar to that of “Pieniny A”, larger proportion of agglutinated foraminifers. All fall within the “Marssonella” association sensu Haig, 1979, Haig, 1979. Layers of black shales, interpreted to reflect Cretaceous oceanic anoxic events, are correlated between successions of the Pieniny Klippen Belt, and their biostratigraphical position is determined. |
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