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Bituminous sandy rocks occur in the area between the river Volga and Ural mountains (Republic of Tatarstan, Russia) in the sediments of the Permian age. According to the mineral composition, they belong to the graywacks and are composed of quartz grains, feldspars, effusive fragments, etc. The study of their composition and structure was carried out in order to identify the factors of localization of oil and bituminous substances. However, mineral particles of pelitic and smaller dimensions remained practically un...

The object of the study was the Ufimian bituminous sands and sandstones in the east of the East European Platform (Russian Federation). Bituminous sands and sandstones are confined to the Sheshmian horizon (Cisuralian, Ufimian Stage of the General Stratigraphic Scale of Russia). Interest in the study of bituminous rocks is associated with the depletion of traditional oil fields. Initially, bituminous rocks were considered as a source of bitumen for road construction, but in recent years they have been involved in ...