The New Data of Fauna and Landscapes History in the Manych Basin During the Late Pleistocene
https://doi.org/10.31857/S2587-55662019357-63
Abstract
The geology and mammal and mollusk fauna from the Late Pleistocene locality Sanmanych (the single location of paleontological remains in the Manych basin) in Rostov region are discussed. The received data permit to reconstruct the climatic-environmental condition during the Early Khvalynian transgression in the Manych basin. This transgression was dated by 14 C in the interval between 16–12 kyr BP. As a result of the formation of a Cascade of Eurasian Basins for the first time in the Late Pleistocene Caspian waters of the Khvalynian Sea had flooded to the Manych depression and the Manych-Kerch strait was originated during that time. The marine mollusks appeared in the Manych basin together with Caspian Sea water. The salinity of Khvalynian basin was close to the same of the Caspian Sea (10–12%) and the water temperature was lower than recent one, what confirms by the fact that mollusk’ shells were two-three times smaller than the modern ones of the same species. The analysis of the small mammal fauna permits to reconstruct the arid open landscapes during the formation of the location. The lower mammal diversity indicates the unfavorable climatic and environment conditions – the high aridity and the rather cool climate.
Supporting agencies: This paper was supported by the Scientific Research Theme of the Institute of Geography of RAS No 0148-2019-0007 “The assessment of physicgeographical, hydrological and biotic environmental changes and their effects for creation of the basis of sustainable environmental management”.
About the Authors
A. L. Chepalyga
Institute of Geography, Russian Academy of Sciences
Russian Federation
Russian Federation
A. K. Markova
Institute of Geography, Russian Academy of Sciences
Russian Federation
Russian Federation
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Graphical Abstract
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1. The structure of rodents teeth from Sanmanych locality | |
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Indexing metadata ▾ | |
- According to the geological and mollusc data, the only mammal locality in the Manych depression relates to the Early Khvalynian transgression of the Caspian Sea (16–12 kyr BP).
- Small mammal data allows to reconstruct the steppe and semidesert landscapes in the area.
- The low mammal diversity indicates the unfavourable climatic conditions, namely high aridity and the rather cold climate.
Review
For citations:
Chepalyga A.L., Markova A.K. The New Data of Fauna and Landscapes History in the Manych Basin During the Late Pleistocene. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2019;(3):57-63. (In Russ.) https://doi.org/10.31857/S2587-55662019357-63
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