Dinoflagellate study of the Lower Cretaceous deposits in the Pieniny Klippen Belt (Rochovica section, Slovak Western Carpathians)


Authors: Skupien P

Published in: Bulletin of Geosciences, volume 78, issue 1; pages: 67 - 82; Received 12 August 2002; Accepted in revised form 15 October 2002;

Keywords: Lower Cretaceous, dinoflagellate, palynomorpha, palaeoecology, palaeoclimatology, Western Carpathians, Pieniny Klippen Belt,

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One of the most complete and best documented sections, namely the Rochovica section, was selected for the first detailed palynological study of Lower Cretaceous sediments of the Pieniny Klippen Belt. The greatest attention was given, from not only the biostratigraphical but also the palaeoecological point of view, to the assemblages of non-calcareous dinoflagellates. Based on dinoflagellates, the age of the studied sediments corresponds to the Upper Barremian-Albian. Quantitative composition of the palynomorph assemblage reflects open-sea conditions with higher supply of terrigenous material during the Barremian and the Early Aptian as well as a marked supply of nutrients during the Early Aptian. Generally, a rise in the sea level in the Barremian-Albian period is obvious (oceanic types of dinocysts are present).