ABSTRACT
The Altmark area forms the northern part of Sachsen-Anhalt, bordering on Lower Saxony in the west. To the north and east it is bounded by the Elbe River and to the south by the Ohre River. The sedimentary complex consists of an upper fine sand and a lower sandy gravel sequence. Elsterian glacial sedimentation in channels and depressions begins with thick sand and gravel-rich deposits, interbedded with silt beds of variable type and thickness. The sands and gravels deposited at the Colbitz Waterworks in the Letzlingen-Colbitz Heath area are correlated with the Elsterian. The Saalian ‘Complex’ of the Altmark area consists of two glaciations referred to as the Warthe Glaciation and the Drenthe Glaciation. Sand accumulations in the northern Altmark, which strike parallel to the respective ice-marginal positions, were deposited during the advance phase of the Warthe glacier. The Kalbe/Milde area is the best suited for a stratigraphical subdivision of the Late-glacial in the wide valleys of the northern Altmark.
