On the Relation between Subglacial Tills and the Substratum in Western Allgäu (Germany)

Mat G. G. De Jong
Grain-size distribution, gravel petrography, heavy mineral weight percentage and heavy mineral composition of subglacial tills from the Alpine foreland of western Allgäu (Germany) have been analysed to assess the relation between the sediments and the substratum. Except for a few well-defined local Molasse-derived deposits - the till petrography is dominated by far-travelled debris. The combination of petrographic evidence, theoretical considerations and broad-scale geomofphological observations leads to the conclusion that most till-forming debris was transported to...