2026-05-07T23:30:04Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/60992022-11-29T10:42:15Zcom_10259.4_2560com_10259_5086com_10259_2604col_10259.4_2561
Enviromagnetic study of Late Quaternary environmental evolution in Lower Volga loess sequences, Russia
Költringer, Chiara
Stevens, Thomas
Bradák, Balázs
Almqvist, Bjarne
Kurbanov, Redzhep
Snowball, Ian
Yarovaya, Sofya
Lower Volga loess
Caspian Sea
Environmental magnetism
Magnetic proxies
Atelian regression
Last glaciation
Magnetismo
Geología
Ciencias medioambientales
Magnetism
Geology
Environmental sciences
The late Quaternary development of the Lower Volga region of Russia is characterized by an alternating influence of marine
and continental environments resulting from fluctuations in Caspian Sea level during the last glaciation. However, sediments
deposited under continental conditions have received very little research attention compared to the under- and overlying
marine deposits, such that even their origin is still in debate. Detailed magnetic mineralogical analyses presented here
show clear similarities to loess. The results suggest that climate during the time of loess deposition, the Atelian regression
(27–80 ka, MIS 4–3), was dry and cool, similar to the modern-day Northern Caspian lowland. The magnetic properties
recorded in the loess-paleosol sequences of the Lower Volga also point to short episodes of potentially more humid and
warmer climate during the late Atelian. The new findings in regard to the local Caspian climate and environmental evolution
support decreased river discharge from the Russian Plain and Siberian Plain as the dominant factor causing the low Caspian
sea level stand during the Atelian, although local-regional climate changes might have had an additional influence.
The Swedish
Research Council is gratefully acknowledged for funding to Thomas
Stevens for part of this project (2017-03888). The work of Redzhep
Kurbanov was supported by the Russian Science Foundation (grant
19-77-10077). Sofya Yarovaya was supported by the Russian Foundation
for Basic Research (grant 18-00-00470). Balázs Bradák
acknowledges the financial support of project BU235P18 (Junta
de Castilla y Leon, Spain) and the European Regional Development
Fund.
2021-11-04T12:13:55Z
2021-11-04T12:13:55Z
2021-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
0033-5894
http://hdl.handle.net/10259/6099
10.1017/qua.2020.73
eng
Quaternary Research. 2021, V. 103, p. 49 - 73
https://doi.org/10.1017/qua.2020.73
info:eu-repo/grantAgreement/VR//2017-03888/SE
info:eu-repo/grantAgreement/RSF//19-77-10077/RU
info:eu-repo/grantAgreement/RFBR//18-00-00470/RU
info:eu-repo/grantAgreement/Junta de Castilla y León//BU235P18//Análisis arqueomagnéticos en materiales arqueológicos quemados de edad holocena y pleistocena
Atribución 4.0 Internacional
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
application/pdf
Cambridge University Press