Wstępne dane o dewonie na Niżu Polskim

Abstract

PRELIMINARY DATA ON DEVONIAN IN THE POLISH LOWLAND AREAThe Devonian deposits have so far been encountered in the Polish Lowland area only in the marginal synclinorium. In the northeastern areas of the Lowland they are completely missing, and in the southwestern terrains the oldest known formations are represented by the Carboniferous deposits. In the northern part of the marginal synclinorium the Devonian deposits were found in bore hole Chojnice 2. These are represented here by nodular limestones containing brachiopods. On the occurrence of Spirifer archiaci they are referred to the Famennian. In the southern part of the marginal synclinorium arenaceous-mudstone sediments of the Lower Devonian were found in the vicinities of Ciepielów and Dobrohucza, clayey sediments of the Gedinnian at Kock, and carbonate deposits of the Upper Devonian at Tyszowce. These latter are represented by nodular limestones containing very numerous brachiopods characteristic of the Famennian. Limestones with corals, limestones with dolomitic and coral intercalations, as well as dolomites with amphipores are referred to the Fransian.The clastic deposits from bore holes Gołdap and Bartoszyce in the Peribaltic syneclise area, which have so far been referred to the Devonian, are assigned to the Lower Permian.