Geomorphic manifestation of faults and deep tectonic structures of Obshchy Syrt

Abstract

A case study of the Obshchy Syrt upland near Orenburg is discussed to demonstrate that the system of faults and fissures can be traced from the basernentand deep horizons of the sedimentary cover up to the Earth's surface where it forms lineaments. The lineaments direction is closely associated with regional tectonic elements, with flexuresin particular. The lineaments direction is proved to be bound up with the local structures morphology. Parts of the earthcrust, which are tectonically active at present, are note ceable in the topography as zones of high density of lineaments.