Relief-forming role of glaciation in the Eastern Sayan

Abstract

At the Pliocene-Pleistocene boundary a cooling of climate resulted in that the broad-leaved forests were replaced by coniferous-birch ones, climatic fluctuations during the Quaternary did not show in species composition. Only the Late Pleistocene glaciations can be identified beyond any doubt. Glacial deposits overlay older loose formations on planation surfaces, therefore old placers would be also expected to conserve under the till.