Stratigraphic features of Jurassic terrigenous strata belonging to the Central part of the Chardzhou step and their relationship with pre-Jurasic formations

When carrying out exploration activity for oil and gas in the strata of the Jurassic terrigenous formation in the study area, it is necessary to establish the age equivalence of stratigraphic units. The results of a detailed study of the terrigenous rocks composition, lithofacies and stratigraphic characteristics of Jurassic terrigenous section are presented. The influence of pre-Jurassic formations on the genesis of terrigenous strata, due to the strong alteration of the surface of pre-Jurassic section, which determined the facies and stratigraphic characteristics of the terrigenous formation, as well as the inheritance of the relief and the distribution of thicknesses of terrigenous cover, is considered. The studied patterns make it possible to determine the temporal and spatial distribution and the relationship of reservoirs and seal rocks in terrigenous Jurassic strata on the territory of the Central part of the Chardzhou step and make it possible to effectively solve theoretical and practical problems of oil and gas geology of the Republic of Uzbekistan.

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