Peri-orogenous areas of the Soviet Union

Abstract

Two types of platform plains- mobile and relatively stable are distinguished within the limits of the USSR according to the rate of neotectonic geomorphic processes and position of endogenous sources of energy. Mobile areas are vast marginal parts `of platforms up to hundreds kilometers wide which are distinguished by elevated neotectonic activity induced from adjacent orogenes. The rate of neotectonic and geomorphic processes progressively increases towards mountains and nearly reaches values typical for the erogenous regions. Stable areas of platform are far from mountains and outside of the limits of the orogenes' influence. Neotectonics and morphogenesis proceed slowly; the regions seem to receive energy from autonomous local sources, which are relatively weak. Mobile regions of platforms are transitional from erogenous to stable areas, and the author suggests to call them «peri-orogenes».