Abstract
The site at Orłowo Cliff was used to analyse the stratigraphic position and palaeogeographic interpretations of the
properties and depositional conditions of two basal tills from the Late Pleistocene. A multi-proxy approach involved
lithofacies, petrographic analysis of the fine gravel fraction, analyses of indicator erratics and till fabric. TL dating of
intra-moraine deposits was used to determine depositional time frames of tills. The sediment profile at Orłowo Cliff
shows a distinct reduction in number of Pleistocene units. Obtained dating results suggest the presence of Middle and
Late Pleistocene fluvial units. The main issue discussed is the stratigraphic position of the older till (Unit O-4). It can
be assumed that this till was deposited probably during the Middle Weichselian (MIS4). At Orłowo Horn the till of
Unit O-4 reveals incorporation of the erratic material derived from an older till in the surrounded area (according to
petrographic composition – probably from MIS 8). The younger till (Unit O-6) was deposited in the Late Weichselian
(MIS 2). Moreover, the till of Unit O-6 is characterised by a significant shift towards the south-west in terms of the
erratic origin in Unit O-4.
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