Ordowik na Pomorzu Zachodnim

Abstract

ORDOVICIAN IN WEST POMERANIA

Summary

Ordovician deposits have been encountered in several bore holes made within the Chojnice – Koszalin zone. Their development greatly differs from that of the deposits of the same age so far examined in the Polish Lowland area. They are represented by a thick, clayey-siltstone series. On the basis of graptolite fauna, the Lower Caradocian deposits have been found to occur in bore holes Jamno IG-l and Jamno IG-2, and the Llanvirnian deposits – in bore hole Miastko-l. The petrographical features, thickness and type of fauna point that the sedimentation of the Ordovician deposits took place in a relatively deep geosynclinal water basin. The seditmentary zone of the Ordovician basin continues towards the north-west regions and reaches the area of Rügen.