GEODYNAMIC EVOLUTION OF THE CASPIAN MEGADEPRESSION AND ADJACENT TERRITORIES

IF 0.2 Q4 GEOLOGY Visnyk of Taras Shevchenko National University of Kyiv-Geology Pub Date : 2023-01-01 DOI:10.17721/1728-2713.100.02

S. Aliyeva

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Abstract

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).

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里海大坳陷及其邻近地区的地球动力学演化

这项研究的目的是确定里海大坳陷及其邻近地区复杂、不均匀的地质结构的地球动力学演化特征与评估这整个领土的石油和天然气潜力前景之间的联系。为此，对上述地区已发表的地球动力演化研究资料进行了分析，并在此基础上，结合作者先前制定的里海大坳陷及其邻近地区的最佳系统油气地质区划，编制了里海大坳陷及其邻近地区的地球动力演化总图。对最佳分带体系各大环节油气资源及其地球动力学演化特征的分析表明，研究区油气资源的数量和密度主要直接依赖于所经历的地壳动力学演化阶段数，以及古扩张带(裂谷)和古俯冲带(岛弧)的存在与否。

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Visnyk of Taras Shevchenko National University of Kyiv-Geology GEOLOGY-

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