Nowe stanowisko interglacjału mazowieckiego w Gajcu — Pojezierze Łagowskie (zachodnia Polska)

Abstract

New Mazovian Interglacial site at Gajec — Łagowskie Lakeland (western Poland).S u m m a r y . Gajec (Rze-1) borehole was drilled for needs of detailed geological mapping of Poland at the scale 1 : 50 000 (sheet Rzepin ). A deep tunnel valley was recognized in this borehole. It was eroded to 120 m below a see level in the Lower Miocene sediments. The tunnel was filled with 85 m thick series of sands, mud and dusty till deposited during the San Glaciation (the Elsterian Glaciation). The sediments from the depth interval of 67,9 m - 57,1 m have been examined by palinological analysis. The data obtained indicate that the pollen succession from the Gajec section has features characteristic of the Mazovian (Holsteinian) pollen succession. These features are the high proportion of coniferous trees (Pinus, Picea, Taxus, Abies), and theassociation of Alnus with Picea and Carpinus with Abies, Quercus and Corylus as well the most abundant thermophilous elements. Warmth-demanding taxa are represented by pollen of Pterocarya, Celtis, Juglans, Buxus, Ilex aquifolium and Vitis.