Some problems of the relief evolution in Southern Yakutia during the Late Cenozoic

Abstract

Principal regularities in the topographic evolution during the Late Cenozoic are outlined as follows: uniform composition of lacustrine and fluvial sediments; discrepancies in .chronological boundaries of the Pleistocene; certain interrelations between correlated geological bodies; specific features of the Middle Pleistocene sedimentation. The latter consist in the Middle Pleistocene sediments being fine-grained and widely distributed over the region, which suggests lake and fluvial systems, existed throughout the Middle Pleistocene and early in the Late Pleistocene.