Environmental Variability of the Northern Caspian Sea during Khazarian Epoch (Based on Drilling Data)
The objective of our work was to reconstruct transgressive-regressive events in the Northern Caspian Sea during the Khazarian epoch of its Pleistocene history to determine the natural conditions of the development of the basins and to assess their response to climate change. This work is based onstu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Quaternary |
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| Online Access: | https://www.mdpi.com/2571-550X/7/1/5 |
| _version_ | 1827305162532716544 |
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| author | Nataliya Bolikhovskaya Tamara Yanina Valentin Sorokin |
| author_facet | Nataliya Bolikhovskaya Tamara Yanina Valentin Sorokin |
| author_sort | Nataliya Bolikhovskaya |
| collection | DOAJ |
| description | The objective of our work was to reconstruct transgressive-regressive events in the Northern Caspian Sea during the Khazarian epoch of its Pleistocene history to determine the natural conditions of the development of the basins and to assess their response to climate change. This work is based onstudies of the sedimentary formations of the upper part of the Quaternary sequence in the Northern Caspian Sea. The borehole was drilled in the eastern part of the depression Shirotnaya, the sea depth was 11.9 m, and the depth of drilling was 56.4 m. The core was subjected to lithological, malacological, and palynological analysis. This paper discusses the results related to the interval 56.0–26.6 m. The structure, facies-lithological, and malacological composition of the core capture three transgressive stages of the Caspian, namely the Early Khazarian, Late Khazarian, and Hyrcanian stages, separated by regressive phases. The representative spore-pollen assemblages made it possible to carry out the climatic and stratigraphic subdivision of the studied Khazarian deposits and to suggest a provisional version of the history of climatic and phytocenotic events during the sedimentation period. The results of our studies have introduced new discussion points into the paleogeography of the Northern Caspian Sea. |
| first_indexed | 2024-04-24T17:52:32Z |
| format | Article |
| id | doaj.art-2a6e327b853647e18e420977d36a590d |
| institution | Directory Open Access Journal |
| issn | 2571-550X |
| language | English |
| last_indexed | 2024-04-24T17:52:32Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Quaternary |
| spelling | doaj.art-2a6e327b853647e18e420977d36a590d2024-03-27T14:01:53ZengMDPI AGQuaternary2571-550X2024-01-0171510.3390/quat7010005Environmental Variability of the Northern Caspian Sea during Khazarian Epoch (Based on Drilling Data)Nataliya Bolikhovskaya0Tamara Yanina1Valentin Sorokin2Faculty of Geography, Lomonosov Moscow State University, 119991 Moscow, RussiaFaculty of Geography, Lomonosov Moscow State University, 119991 Moscow, RussiaFaculty of Geology, Lomonosov Moscow State University, 119234 Moscow, RussiaThe objective of our work was to reconstruct transgressive-regressive events in the Northern Caspian Sea during the Khazarian epoch of its Pleistocene history to determine the natural conditions of the development of the basins and to assess their response to climate change. This work is based onstudies of the sedimentary formations of the upper part of the Quaternary sequence in the Northern Caspian Sea. The borehole was drilled in the eastern part of the depression Shirotnaya, the sea depth was 11.9 m, and the depth of drilling was 56.4 m. The core was subjected to lithological, malacological, and palynological analysis. This paper discusses the results related to the interval 56.0–26.6 m. The structure, facies-lithological, and malacological composition of the core capture three transgressive stages of the Caspian, namely the Early Khazarian, Late Khazarian, and Hyrcanian stages, separated by regressive phases. The representative spore-pollen assemblages made it possible to carry out the climatic and stratigraphic subdivision of the studied Khazarian deposits and to suggest a provisional version of the history of climatic and phytocenotic events during the sedimentation period. The results of our studies have introduced new discussion points into the paleogeography of the Northern Caspian Sea.https://www.mdpi.com/2571-550X/7/1/5borehole corelithological analysismalacofaunaspore-pollen assemblagesearly khazarian transgressionlate khazarian basin |
| spellingShingle | Nataliya Bolikhovskaya Tamara Yanina Valentin Sorokin Environmental Variability of the Northern Caspian Sea during Khazarian Epoch (Based on Drilling Data) Quaternary borehole core lithological analysis malacofauna spore-pollen assemblages early khazarian transgression late khazarian basin |
| title | Environmental Variability of the Northern Caspian Sea during Khazarian Epoch (Based on Drilling Data) |
| title_full | Environmental Variability of the Northern Caspian Sea during Khazarian Epoch (Based on Drilling Data) |
| title_fullStr | Environmental Variability of the Northern Caspian Sea during Khazarian Epoch (Based on Drilling Data) |
| title_full_unstemmed | Environmental Variability of the Northern Caspian Sea during Khazarian Epoch (Based on Drilling Data) |
| title_short | Environmental Variability of the Northern Caspian Sea during Khazarian Epoch (Based on Drilling Data) |
| title_sort | environmental variability of the northern caspian sea during khazarian epoch based on drilling data |
| topic | borehole core lithological analysis malacofauna spore-pollen assemblages early khazarian transgression late khazarian basin |
| url | https://www.mdpi.com/2571-550X/7/1/5 |
| work_keys_str_mv | AT nataliyabolikhovskaya environmentalvariabilityofthenortherncaspianseaduringkhazarianepochbasedondrillingdata AT tamarayanina environmentalvariabilityofthenortherncaspianseaduringkhazarianepochbasedondrillingdata AT valentinsorokin environmentalvariabilityofthenortherncaspianseaduringkhazarianepochbasedondrillingdata |