Tectonic tilting of the Earth's crust and its significance for river valleys and alluvial placers formation

Abstract

Regularity in river valleys formation in the northern Amur-Zeya Plain has been established and studied in the values of 1st to 4th order. On the basis of the data on the sediments' structure, composition and age, longitudinal profiles of the present-day channels and buried thalwegs, changes in flam velocities during floods in ancient rivers, and also considering environments of the valleys formation, the author shows tectonic 'tilting directly influences longitudinal profiles of rivers. Other characteristics of streams are also conditioned by the tectonic impact, which results in special features of the valleys structure and development.