THE RESULTS OF GEOLOGICAL INVESTIGATIONS ALONG ZILAIR REGIONAL PROFILE №4
An alternative interpretation was suggested for the regional profile Zilair № 4 (Bashneftegeofizika, 2004-2005), made across the Southwestern area of the Bashkirian part of the East European platform and foreland folds of the Urals. A wrench fault structure of the Sharlyk (Zildyarovo) uplift of the basement was proposed. In the centre of the basin the Riphean-Vendian sediments were affected by thrusting. Two west-vergent thrusts are of a greatest importance and have big horizontal amplitudes, permitting to qualify them as nappes. These are: Muradymovo thrust, marking the western boundary of the synclinorium, and Pokrovsky thrust in the centre of the synclinorium. Big thrusts of the eastern limb of the Preuralian foredeep - Shikhano-Volostnov and Suren, and also Muradymovo foreland folds - acquire gradually a gentler eastward dip at the depth of 17-18 km (7-8 s) and are connected with a general detachment.