Vendian–Riphean Complexes of the Aldan–Maya Sedimentary Basin and the Yurubchen–Tokhomo Zone of Oil-and-Gas Accumulation, Southeastern and Southwestern North Asian Craton: Comparative Analysis and Petroleum Potential

Resumo

This paper presents a comparative analysis of the Aldan–Maya sedimentary basin (AMSB) and the Yurubchen–Tokhomo zone (YuTZ) of oil-and-gas accumulation, which are located, respectively, on the southeastern and southwestern margins of the North Asian Craton. At present, only the YuTZ has unique reserves of oil, gas, and gas condensate (Yurubchen–Tokhomo, Kuyumba, and Omorin fields). The fundamental similarity of the facies and geodynamic sedimentation settings and lithological composition is shown for the Riphean sequences of the Baikit anteclise of the YuTZ and AMSB, which were formed at the aulacogen stage of the cover formation of the North Asian Craton. This fact indicates the great potential of the AMSB for discovery of economic petroleum fields. This paper represents a continuation of the complex study of the geology, deep structure, geodynamics, and hydrocarbon potential of the AMSB.