Wirkungen des pleistozänen kaltzeitlichen Klimas, insbesondere des Bodenfrostes, in den Sedimenten des östlichen Ostfalen (Raum Hannover - Wolfsburg - Helmstedt -Bad Harzburg - Salzgitter-Bad - Hannover) - Teil 1

Abstract

In this first part of the publication - a second part especially about ice-wedges and aeolian processes will follow in the next year - the abundant form inventory of diversified periglacial solifluction layers, of horizons of gelifraction, of congelifractates, of frost kettles "Frostkessel", geologic "Stiche", of the "Hakenschlagen", of glacigen structures of icefoldings and of cryoturbation structures in eastern Lower Saxony (eastern part of Ostfalen) is photographed, described, explained and dated. Most parts of the forms can be found in probably Saalian (Drenthe) glacifluvial and morainic sediments. In the southern part of the loess border which divides the researched region in a northern and a southern part, the Saalian sediments are covered by loessic sediments of high Weichselian age. The loessic deposits are used for the datation of the older diversified solifluction layers as well as for the many cryoturbation phenomena. Mostly the formation of the latter sediments has just begun in the second part of the Saalian time. Recrding to the depth where the cryoturbation phenomenareach down, the mollisol in top of the permafrost had had an extensure of 1,0 to 1,5 m during the Upper Saalian and the whole Weichselian period.