New palyno- and lithostratigraphic interpretation of the Cenozoic lake sediments in the section Goleń, Mazury Lakeland

Abstract

Three lacustrine series were examined in the section Goleń. History of vegetation and respective climatic changes were presented on the basis of a palynological study. The Upper Miocene and Lower Pliocene sequence was defined at depth 119.10-138.75 m. Fragment or pollen succession at depth 35.10-36.92 m has been correlated with pollen periods II, III and IV of the Mazovian Interglacial. A new warm unit of the Pleistocene in Poland is represented by pollen succession recorded at depth 50.31-53.21 m. Petrographic analysis determined lithotypes of tills within the Quaternary complex. The tills were ascribed to Sanian, Wilgian, Liviecian, Odranian, Wartanian and Vistulian Glaciations. Interglacial lacustrine sediments defined by a palynological study are to be located at two stratigraphic positions alternatively. According to the first one, they can be correlated with the Mazovian Interglacial with the lower series in situ, and the upper being a glacial raft. The second version assumes that the upper series is also a formation in situ of the Mazovian Interglacial, while tile lower series represents a new warm unit in the stratigraphy of the Quaternary of Poland.