Evolution mechanism and morphostructure of Siberian platform peripheral mountains

Abstract

A single three-dimensional geomorphic body-intracontinental orogen includes mountain belt, rift zones aтd marginal troughs at the southern and eastern boundaries of the Siberian plate; the orogen came into being due to its position at the margin of a stable lithospheric block which underwent mostly precision from the Meso-Cenozoic folded area. Mountains at the southern margin of the Siberian plate were formed mostly by horizontal shifts within the lithosphere which were controlled by compression from the Pacific sutural zone and by NE drift of Indostan plate. Two main stages in the intracontinental orogen evolution can be distinguished: 1 - compression (late Mesozoic-Late Neogene), 2 - local spreading of sub-meridional fragments (starting from Late Neogene or early Anthropogene).