Arch-block structures of the Bolshoi Balkhan anticline revealed by geolcgical and geomorphological analysis

Abstract

The Bolshoi Balk fan ridge is the largest boundary morphostructure at the west Central Asia between epihercynian platform and the alpine fold belt. Morphostructural and neotectonic subdivision of the Bolshoi Balk fan megaanticline is based on the relief study and geological and geophysical analysis. Block movements are argued to be essential at the final stages of the morphostructure evolution. Block structure of the megaanticline basement is substantiated. The basement blocks and intermediate fault-flexure zone highly active within the Mesozoic mantle are of primary importance for seismic subdivision of the area and search for minerals.