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oai:riubu.ubu.es:10259/61012022-11-29T10:51:32Zcom_10259.4_2560com_10259_5086com_10259_2604col_10259.4_2561

Költringer, Chiara Bradák, Balázs Stevens, Thomas Almqvist, Bjarne Banak, Adriano Lindner, Martin Kurbanov, Redzhep Snowball, Ian 2021-11-04T12:30:37Z 2021-11-04T12:30:37Z 2021-09 0277-3791 http://hdl.handle.net/10259/6101 10.1016/j.quascirev.2021.107057 Magnetic fabric (MF) investigations complemented by geochemical and grain surface analyses of the understudied and controversial marine isotope stage (MIS) 5 b, 4 and 3 loess deposits in the Lower Volga region, Russia show that the material has been transported and deposited by wind and to a large extent experienced post-depositional reworking. Grain surface features suggest that the material was glacially ground and fluvially transported prior to final aeolian deposition as loess. Secondary magnetic fabrics in the loess reveal pedogenic and cryogenic processes and a generally cold environment with brief shifts to warmer climate during late MIS 5 and MIS 3. Palaeowind reconstructions derived from preserved primary aeolian MF, indicate locally influenced westerly and north-westerly flow as part of a wider scale westerly wind pattern, similar to modern day winter conditions. We suggest that the climate of the last glacial in the Northern Caspian Lowland was cold and dry, with higher windspeeds and less variability during MIS 4 compared to MIS 3. Financial support of project BU235P18 (Junta de Castilla y León, Spain) and the European Regional Development Fund (ERD), project PID2019- 108753 GB-C21/AECI/10.13039/501100011033 and project PID2019-105796 GB-100/AECI/10.13039/501100011033 of the Agencia Estatal de Investigación. R. Kurbanov acknowledges the Russian Science Foundation project 19-77-10077. The Swedish Research Council is gratefully acknowledged for funding to T. Stevens for part of this project (2017e03888). application/pdf eng Elsevier Quaternary Science Reviews. 2021, V. 267, 107057 https://doi.org/10.1016/j.quascirev.2021.107057 info:eu-repo/grantAgreement/Junta de Castilla y León//BU235P18//Análisis arqueomagnéticos en materiales arqueológicos quemados de edad holocena y pleistocena info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-108753GB-C21/ES/LA CURVA DE DERIVA POLAR APARENTE DE LA PLACA IBERICA. NUEVOS DATOS PALEOMAGNETICOS SOBRE LA ROTACION DE IBERIA DURANTE EL CRETACICO info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105796GB-I00/ES/LAS VARIACIONES DEL REGISTRO ARQUEOMAGNETICO PREHISTORICO EN LA PENINSULA IBERICA Y EL CAUCASO info:eu-repo/grantAgreement/RSF//19-77-10077/RU info:eu-repo/grantAgreement/VR//2017-03888/SE Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Anisotropy of magnetic susceptibility Scanning electron microscopy Loess Northern Caspian Sea region Palaeowinds Post-depositional reworking Chemical alteration Palaeoclimate reconstruction Magnetismo Ciencias medioambientales Geología Magnetism Environmental sciences Geology Palaeoenvironmental implications from Lower Volga loess - Joint magnetic fabric and multi-proxy analyses info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion