Izvestiya of Saratov University.
ISSN 1819-7663 (Print)
ISSN 2542-1921 (Online)


mantle

Hydrothermal Lithogenesis and Its Role in Riftogenic-Sedimentary Oil and Gas-Bearing Platform Complex Formation

Thorough lithologic investigations were used as the basis to demonstrate integration of the epigenetic transformations in the rocks from the transitional complex and the mantle of the West Siberian Plate in the process of tectono-hydrothermal activation.

Physical and geological model of the Shalkar earthquake focal zone

The Shalkar earthquake focal zone is characterized by the strongest earthquakes of all that occurred in the southeast of the East – European Platform. A physical and geological model has been developed, on the basis of which the parameters of the Shalkar earthquake focal zone have been determined, which can be used to assess the intensity of shaking from possible earthquakes. The relationship between earthquakes in the southeast of the East European platform and deformations in the mantle is shown.

Deep meridional structures of the East-European platform

Using a complex of remote and surface geophysical methods in the eastern part of the East European Platform, regional meridional heterogeneities were revealed; it is shown that these heterogeneities can be caused by low-density and magnetically active rocks in the crystalline crust and mantle. The totality of geological and geophysical data indicates the relationship of meridional heterogeneities with transcontinental deep faults.