ABSTRACT: Genesis and Formation of Oil and Gas in Different Type of Sedimentary Basins (USSR Basin-Wide Petroleum Geology)

V. V. Pairazian

Tectonic evolution of sedimentary basins includes three main types of geodynamic plate interaction conditions: divergent (separation), convergent (consumption), and isostatic balance, which in turn control geological and geochemical development of oil and gas formation processes. Geodynamic type of sedimentary basins differs in numerous geological and geochemical genetic parameters, being of principal importance for the evaluation of petroleum potential. The most favorable geodynamic conditions for hydrocarbon generation, migration, and accumulation are plate separation, leading to rift and passive continental margin formation, and orogenic collision, resulting in foredeep basin occurrence. At present, science-based evolution of basin oil prospects is impossible without m deling these processes together with geodynamics of basin tectonic evolution. Application of tectonic plate principles to geodynamic basin modeling allows us to solve some problems of petroleum genesis from a new point of view.

AAPG Search and Discovery Article #91003©1990 AAPG Annual Convention, San Francisco, California, June 3-6, 1990