Ordowik wschodniej części obniżenia podlaskiego

Abstract

The Ordovician of the eastern part of the Podlasie depressionResults of new boreholes from the eastern part of the Podlasie depression, confirm the previous suggestion on a gradual transgression of the Ordovician sea, proceeding from the Białowieża·region, where it has·persisted since the Cambrian period. Ordovician sediments (Upper Arenig-Middle Caradoc) pierced in new boreholes are developed in carbonate facies, the stratigraphic subdivision·of which is based on brachiopods, conodonts and trilobites;