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Mineral magnetic properties of loess–paleosol couplets of northern Serbia over the last 1.0 Ma

Published online by Cambridge University Press:  13 August 2021

Namier Namier
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China University of the Chinese Academy of Sciences, Beijing100049, China
Xinbo Gao
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China
Qingzhen Hao*
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China University of the Chinese Academy of Sciences, Beijing100049, China Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Beijing100044, China
Slobodan B. Marković
Affiliation:
Department of Physical Geography, Faculty of Sciences, University of Novi Sad, 21000Novi Sad, Serbia Serbian Academy of Sciences and Arts, Belgrade11000, Serbia
Yu Fu
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China University of the Chinese Academy of Sciences, Beijing100049, China
Yang Song
Affiliation:
Beijing Research Center of Urban System Engineering, Beike Building, Beijing100035, China
Huandi Zhang
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China University of the Chinese Academy of Sciences, Beijing100049, China
Xuechao Wu
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China University of the Chinese Academy of Sciences, Beijing100049, China
Chenglong Deng
Affiliation:
University of the Chinese Academy of Sciences, Beijing100049, China State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
Milivoj B. Gavrilov
Affiliation:
Department of Physical Geography, Faculty of Sciences, University of Novi Sad, 21000Novi Sad, Serbia
Zhengtang Guo
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China University of the Chinese Academy of Sciences, Beijing100049, China Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Beijing100044, China
*
*Corresponding author at: E-mail address: [email protected] (Qingzhen Hao).

Abstract

We conducted the first detailed mineral magnetic investigation of more than nine loess–paleosol couplets of the composite Titel-Stari Slankamen loess section in Serbia, which provides one of the longest and most complete terrestrial record of paleoclimatic changes in Europe since ~1.0 Ma. The results show that the ferrimagnetic mineral assemblage of the loess units is dominated by partially oxidized multidomain (MD) and pseudo-single domain (PSD) magnetite; however, with an increasing degree of pedogenesis, the eolian contribution is gradually masked by pedogenic superparamagnetic(SP) and single-domain (SD) ferrimagnets (mainly maghemite). The overall consistency of ferrimagnetic grain-size parameters indicates an absence of dissolution of the fine-grained ferrimagnetic fraction despite changes in climate regime over the past 1.0 Ma. The variations of normalized dJ/dT@120K and normalized χheating@530°C reflect a long-term stepwise increase in aridity during glacials with a major step at ~0.6–0.5 Ma, over the last 1.0 Ma. Overall, the results provide an improved basis for the future use of the magnetic properties of Serbian loess deposits for paleoclimatic reconstruction.

Type
Thematic Set: Eurasian Climate and Environment
Copyright
Copyright © University of Washington. Published by Cambridge University Press, 2021

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References

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