ABSTRACT
After more than a century of glacial geology, the focus of research has turned from special glaciation-related problems towards general palaeogeographical models, including the most important problems of the geological history of the Pleistocene. Interregional lithological correlation of glacial deposits requires the development of appropriate techniques. In view of the complex natural conditions under which tills were formed, their long-distance correlation should take into account the palaeogeographical situation. The map of lithological regions, compiled on the assumption that southeasterly ice flow was dominant, combines the complex spatial relationship with a correlation of the main factors influencing glacial sedimentological processes. The major lithological and morphological features identified, such as the Carboniferous Plateau, the Mesozoic Plain and the Timan Ridge, control the dynamics of ice lobes and tongues, and determine the composition of material assimilated by the ice.
