Geology, geography and global energy
Scientific and Technical Journal
ON KARST SINKHOLE ON THE ELEVATION BESSHOKY IN WESTERN KAZAKHSTAN
2019. №3, pp. 57-66
Golovachev Ilya V. - Ph. D. in Geography, Associate Professor, Astrakhan State University, Astrakhan, 414000, Russian Federation, bask_speleo@mail.ru
On the territory of Western Kazakhstan, located in the Eastern part of the Caspian lowland, there are small scattered karst areas. They are associated with access to the surface of the ancient late Paleozoic rocks, represented, as a rule, strongly dislocated lower Permian gypsum in the nuclei of salt domes. Climatic conditions, salt dome tectogenesis, transgressions and regressions of the paleo-Caspian sea had a significant impact on the formation of the karst features of these areas. One of these areas is the salt dome uplift elevation Besshoky (Bish-choho). In the article, based on the analysis of the works of various researchers and their own field data, the author gives a brief overview of the karst sinkholes available on the elevation, which are a characteristic feature of this karst area. However, the focus is on only one major old karst sinkhole, which emerged at the beginning of the last century. This karst sinkhole was as fully as possible examined and described by the Saratov researcher Yu. M. Rally in 1934 during a study trip to the elevation of Besshoky. Research on this karst sinkholes were also carried out in the course of comprehensive research expeditions organized by the Astrakhan branch of the Russian geographical society in 1987, 1997-1999, 2009 and 2019. Thus, it was possible to trace the natural evolution of this karst formation for a long period of time. Karst elevation Besshoky refers to the type of covered karst, as karst rocks are covered with loose sedimentary cover of the ancient Caspian sediments. The karst relief of this salt-dome uplift is quite stable and changes very slowly.
Key words: гипсовые кепроки, соляные купола, сульфатный карст, солянокупольная тектоника, карстовый процесс, карстовый рельеф, карстовые провалы, возвышенность Бесшокы (Биш-чохо), Северный Прикаспий, gypsum caprock, salt domes, sulfate karst, salt-dome tectonics, ka
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