Новейшая Сдвиговая Тектоника И Нефтегазоносность Западной Сибири

Strike-slip fault structures have been identified with confidence in the vast area of the West Siberian north and characterized in detail by the Central Geophysical Expedition. Various structural paragenesis of strike-slip deformations ranging from drag folds arranged in an echelon manner and early shear systems to linear suture zones of rock mass discontinuities in the sedimentary cover can be mapped there. Strike-slip fault structures have been identified in a giant territory extending from the southern border of the Yamal-Nenets Autonomous Area up to the polar latitudes, covering an area of over 500 thousand square kilometers and holding largest hydrocarbon deposits. The study of hydrocarbon fields shows a significant impact exerted by strike-slip faults on the formation of hydrocarbon deposits, on regularities in their spatial-stratigraphic distribution, on reservoir properties and sealing ability of rocks.