Some sedimentological aspects of the fluvioglacial outwash plain near Soesterberg (The Netherlands)

Abstract

The fluvioglacial outwash plain near Soesterberg (The Netherlands) is a deposit, built up during the melting of the Saalian ice, by a braiding river system on the ice-free side of the ice-pushed ridge of Amersfoort. The variation in the grain-size distribution of the sediment is great. Sorting is very poor to moderate. This indicates a high stream velocity, though fluctuating, combined with a huge supply of debris. The parallel to the principal stratification plane bedded strata alternate frequently with depressions, which are filled up laterally, showing a "festoon lamination".