Age of topography and neotectonics intensity at mountains of Central Asia

Abstract

Age determination of the Tier Shan is critically revised and a conclusion is drawn on mostly.Late Pliocene age of the mountains. Maximum value of neotectonic uplifts at Ghissar Alai is 5 to 6 kilometres, and this of Chatkal-Kuramin Mountains is 4 to 5 kilometres. Out of these values 3.5 to 4 km and 2.5 to 3 km fall respectively on the Late Pliocene, including late Akchagylian – up to l to 1.5 km, early Apsheronian – 1.5 to 1.7 km and late Apsheronian – 1.0 to 1.5 km.

Formation of the present topography at Pamir-Alai took place earlier as compared with the Chatkal-Nurata region topography (Akchagyl-Apsheron in the first case and Apsheron- Pleistocene in the second). The difference of the relief age may be used as one of basic principles of morphotectonic subdivision of the area.