New data on mountain valleys

Abstract

New data indicate the evolution of mountain river valleys to be complicated, not unidirectional, but partly inherited. Similarly to valleys of plains some of them contain buried alluvial horizon. Regularities of the buried alluvium distribution are controlled by neotectonic regime; individual regions differ in the heights interval within which the erosion proceeded during the Late Cenozoic. The buried alluvium conservation is due to some conditions of the subsequent evolution of the valley. The data obtained are of both theoretical and applied importance.