STRUCTURE AND NATURE OF THE CONJUGATION OF THE URALS AND WESTERN SIBERIA

Abstract

The Uralian Foldbelt is a natural western boundary of the West Siberian Petroliferous Megabasin. Lithotectonic zones making up the eastern sector of the Urals have a general NNE trend. They successively plunge beneath Mesozoic and Cenozoic sediments of the megabasin from south to north. The character of the boundary between the Urals and West Siberian Megabasin so far remains equivocal. The nature and localization of the eastern Uralian Foldbelt boundary always was the most difficult and debatable problem in the regional tectonics. The study of the boundary zone and geological complexes of the eastern Urals is crucial for the interpretation of the basement structure beneath the West Siberian Megabasin and history of its evolution [1].