Middle Pleistocene glaciolacustrine basins of western Belarus, eastern Poland and their palaeogeographic significance

Detailed complex palaeogeographic analysis indicated that there is a thick ice-dam lacustrine series of the Middle Pleistocene in mid-eastern Poland a nd western Belarus. Stratigraphic location of ice-dam lake sediments as wel l as their relation to the underlying and overlying series indicate that th is sequence forms a continuous bed separating tills of two successive glaci ations. Based on petrography of pebbles in tills, correspondence to key sit es with organic and fluvial deposits of the Holstein Interglacial, and deta iled palaeogeographic analysis, presence of this glaciolimnic complex prove s wide spread of ice-dam lakes in the Polish-Belarus border area at the ter mination of the Elsterian (Berezina, South-Polish) Glaciation. Similar seri es occurs also in the Lower Vistula region in Poland and in the Lower Elbe region in Germany. In the latter, it undoubtedly passes into marine series of the Holstein Interglacial. Such facts argue for correlative significance of this glaciolimnic series in a considerable part of the Central European Lowland.