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Be-10 signature of the Matuyama-Brunhes transition from the Heqing paleolake basin
Du, YJ (Du, Yajuan)[ 1,2,3,4 ]; Zhou, WJ (Zhou, Weijian)[ 1,3,4,5 ]; Xian, F (Xian, Feng)[ 1,3,4 ]; Qiang, XK (Qiang, Xiaoke)[ 1 ]; Kong, XH (Kong, Xianghui)[ 1,3,4 ]; Zhao, GQ (Zhao, Guoqing)[ 1,3,4 ]; Xie, XJ (Xie, Xingjun)[ 1,3,4 ]; Fu, YC (Fu, Yunchong)[ 1,3,4 ]
2018-11-01
Source PublicationQUATERNARY SCIENCE REVIEWS
Volume199Pages:41-48
Subtype期刊论文
Abstract

We present a new 10Be record spanning the Matuyama-Brunhes (M-B) reversal from the Heqing paleolake basin in southern China. It provides a robust proxy for past geomagnetic variations that can be compared with paleomagnetic records. The M-B transition is identified as a pronounced maximum of authigenic 10Be/9Be ratio between 768.6 and 778.5 ka, that is consistent with all other available 10Be-proxy records from marine, ice and loess archives. However, it is offset by approximately 0–60 cm depth from the magnetic signature of the polarity transition recorded in the same sediments. We attribute this offset to the lock-in effect of the remanence acquisition process, which is similar to the phenomenon that exists in marine sediments. We suggest that after eliminating the climatic-hydrological signal, the Heqing sediments may be used as an archive for atmospheric 10Be production rate changes. The combination of magnetic remanence measurements and the cosmogenic 10Be allows for a more precise geochronology of geomagnetic polarity reversals.

KeywordHeqing Paleolake 10be Cosmogenic Isotopes Matuyama-brunhes Transition
DOI10.1016/j.quascirev.2018.09.020
Indexed BySCI
Language英语
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9581
Collection古环境研究室
Corresponding AuthorZhou, WJ (Zhou, Weijian)[ 1,3,4,5 ]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China;
2.University of Chinese Academy of Sciences, Beijing, 100049, China;
3.Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi'an AMS Center of IEECAS & Xi'an Jiaotong University, Xi'an,710061, China;
4.Open Studio for Oceanic-Continental Climate and Environment Changes (OCCEC), Qingdao National Laboratory for Marine Science and Technology,Qingdao, China
Recommended Citation
GB/T 7714
Du, YJ ,Zhou, WJ ,Xian, F ,et al. Be-10 signature of the Matuyama-Brunhes transition from the Heqing paleolake basin[J]. QUATERNARY SCIENCE REVIEWS,2018,199:41-48.
APA Du, YJ .,Zhou, WJ .,Xian, F .,Qiang, XK .,Kong, XH .,...&Fu, YC .(2018).Be-10 signature of the Matuyama-Brunhes transition from the Heqing paleolake basin.QUATERNARY SCIENCE REVIEWS,199,41-48.
MLA Du, YJ ,et al."Be-10 signature of the Matuyama-Brunhes transition from the Heqing paleolake basin".QUATERNARY SCIENCE REVIEWS 199(2018):41-48.
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