The structure of the Slavgorod zone of marginal formations and some problems of Moscow (Sozh) ice sheet dynamics

Abstract

The structure of marginal formations is considered, situated westward of Slavgorod and marking the Moscow (Sozh) ice sheet boundary. With respect to genesis three geomorphological subzones are distinguished, following each other in a distal direction: «push» subzone, subzone of glaciofluvial accumulation ridges and subzone of stagnant ice relief. In the formation of «push» subzone the leading was ice movement of scaly thrust type. Later on, while the glacier activity decreased the ice movement came to be laminated. Both glaciodynamic processes took place during the advance of glacial stream from north-west to south-east which is indicated by the orientation of elastic material in a moraine as well as by the direction of brecciation in detached masses of bedrock.