GEODYNAMIC EVOLUTION OF THE CASPIAN MEGADEPRESSION AND ADJACENT TERRITORIES

The objective of this study is to establish links between the features of the geodynamic evolution of the complex, heterogeneous in its geological structure of the Caspian megadepression and adjacent regions – with the issues of assessing the prospects for the oil and gas potential of this entire territory. For this purpose, the data of published works on the geodynamic evolution of the above territory were analyzed and, based on this analysis, a summary map of the geodynamic evolution of the Caspian megadepression and adjacent regions was compiled, combined with the optimal systemic oil and gas geological zoning of this territory, previously developed by the authors of this work. The analysis of oil and gas resources for individual large links of the optimal zoning system with the features of their geodynamic evolution showed that in the studied area, there is mainly a direct dependence of the amount and density of hydrocarbon (HC) resources on the number of stages of geodynamic evolution of the earth's crust that have passed here, and also the presence or absence of paleospreading zones (rifts) and paleosubduction zones (island arcs).