The Geotectonic Peculiarities of the North Caspian Permian Salt-Bearing Basins (Kazakhstan)
This article examines the geotectonic and sedimentary features of the Upper Devonian–Carboniferous–Permian deposits of the North Caspian basin, represented by deposits of marine Paleozoic-isolated carbonate platforms formed during the subsidence of the basement on the passive continental margin. The...
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| Format: | Article |
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MDPI AG
2024-01-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/14/1/23 |
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| author | Vyacheslav Zhemchuzhnikov Aitbek Akhmetzhanov Kenzhebek Ibrashev Gauhar Akhmetzhanova |
| author_facet | Vyacheslav Zhemchuzhnikov Aitbek Akhmetzhanov Kenzhebek Ibrashev Gauhar Akhmetzhanova |
| author_sort | Vyacheslav Zhemchuzhnikov |
| collection | DOAJ |
| description | This article examines the geotectonic and sedimentary features of the Upper Devonian–Carboniferous–Permian deposits of the North Caspian basin, represented by deposits of marine Paleozoic-isolated carbonate platforms formed during the subsidence of the basement on the passive continental margin. The top is covered by thick salt-bearing Kungurian deposits from the end of the Early Permian epoch. The formation of carbonate platforms is associated with a major tectonic restructuring of the basin at the turn of the Caledonian and Hercynian eras, when the Paleo-Tethys Ocean was formed and isolated carbonate islands began to grow in an open marine environment. The central part of the depression experienced a long and gradual subsidence that spanned the entire Paleozoic era and the beginning of the Mesozoic era. In the south and east, from the Devonian to the Permian periods, barriers were formed in the form of island carbonate massifs that separated the North Caspian basin from the Paleo-Tethys Ocean. During the formation of the salt-bearing basin, these barriers limited water exchange and ensured a one-way influx of sea water from the open ocean. As a result, at the end of the Permian period, thicker salts accumulated; however, during the collision of the continental massifs, an invasion of many kilometers of redbeds occurred. They initially stopped salt accumulation; however, gradually, in the north of the Caspian Sea during Roadian times, the salt accumulation continued. The post-Roadian time is associated with the influx of large quantities of redbed sediments, which caused gravitational instability in the underlying salt, and salt tectonics began with the formation of domal structures. |
| first_indexed | 2024-03-08T10:52:15Z |
| format | Article |
| id | doaj.art-4f1b138c094647e68f63b954cb122949 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-08T10:52:15Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-4f1b138c094647e68f63b954cb1229492024-01-26T16:45:15ZengMDPI AGGeosciences2076-32632024-01-011412310.3390/geosciences14010023The Geotectonic Peculiarities of the North Caspian Permian Salt-Bearing Basins (Kazakhstan)Vyacheslav Zhemchuzhnikov0Aitbek Akhmetzhanov1Kenzhebek Ibrashev2Gauhar Akhmetzhanova3School of Geology, Kazakh-British Technical University, Almaty 050000, KazakhstanSchool of Geology, Kazakh-British Technical University, Almaty 050000, KazakhstanSchool of Geology, Kazakh-British Technical University, Almaty 050000, KazakhstanSchool of Geology, Kazakh-British Technical University, Almaty 050000, KazakhstanThis article examines the geotectonic and sedimentary features of the Upper Devonian–Carboniferous–Permian deposits of the North Caspian basin, represented by deposits of marine Paleozoic-isolated carbonate platforms formed during the subsidence of the basement on the passive continental margin. The top is covered by thick salt-bearing Kungurian deposits from the end of the Early Permian epoch. The formation of carbonate platforms is associated with a major tectonic restructuring of the basin at the turn of the Caledonian and Hercynian eras, when the Paleo-Tethys Ocean was formed and isolated carbonate islands began to grow in an open marine environment. The central part of the depression experienced a long and gradual subsidence that spanned the entire Paleozoic era and the beginning of the Mesozoic era. In the south and east, from the Devonian to the Permian periods, barriers were formed in the form of island carbonate massifs that separated the North Caspian basin from the Paleo-Tethys Ocean. During the formation of the salt-bearing basin, these barriers limited water exchange and ensured a one-way influx of sea water from the open ocean. As a result, at the end of the Permian period, thicker salts accumulated; however, during the collision of the continental massifs, an invasion of many kilometers of redbeds occurred. They initially stopped salt accumulation; however, gradually, in the north of the Caspian Sea during Roadian times, the salt accumulation continued. The post-Roadian time is associated with the influx of large quantities of redbed sediments, which caused gravitational instability in the underlying salt, and salt tectonics began with the formation of domal structures.https://www.mdpi.com/2076-3263/14/1/23North Caspian basincarbonate platformKungurian saltPaleozoicTethysevolution |
| spellingShingle | Vyacheslav Zhemchuzhnikov Aitbek Akhmetzhanov Kenzhebek Ibrashev Gauhar Akhmetzhanova The Geotectonic Peculiarities of the North Caspian Permian Salt-Bearing Basins (Kazakhstan) Geosciences North Caspian basin carbonate platform Kungurian salt Paleozoic Tethys evolution |
| title | The Geotectonic Peculiarities of the North Caspian Permian Salt-Bearing Basins (Kazakhstan) |
| title_full | The Geotectonic Peculiarities of the North Caspian Permian Salt-Bearing Basins (Kazakhstan) |
| title_fullStr | The Geotectonic Peculiarities of the North Caspian Permian Salt-Bearing Basins (Kazakhstan) |
| title_full_unstemmed | The Geotectonic Peculiarities of the North Caspian Permian Salt-Bearing Basins (Kazakhstan) |
| title_short | The Geotectonic Peculiarities of the North Caspian Permian Salt-Bearing Basins (Kazakhstan) |
| title_sort | geotectonic peculiarities of the north caspian permian salt bearing basins kazakhstan |
| topic | North Caspian basin carbonate platform Kungurian salt Paleozoic Tethys evolution |
| url | https://www.mdpi.com/2076-3263/14/1/23 |
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