globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.09.020
Scopus记录号: 2-s2.0-85053559714
论文题名:
10Be signature of the Matuyama-Brunhes transition from the Heqing paleolake basin
作者: Du Y.; Zhou W.; Xian F.; Qiang X.; Kong X.; Zhao G.; Xie X.; Fu Y.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 199
起始页码: 41
结束页码: 48
语种: 英语
英文关键词: 10Be ; Cosmogenic isotopes ; Heqing paleolake ; Matuyama-brunhes transition
Scopus关键词: Geochronology ; Geomagnetism ; Remanence ; Sediments ; Submarine geology ; Cosmogenic isotopes ; Geomagnetic polarity reversal ; Geomagnetic variation ; Heqing paleolake ; Hydrological signals ; Matuyama-brunhes transition ; Paleomagnetic record ; ^10Be ; Magnetic polarity ; cosmogenic radionuclide ; hydrometeorology ; magnetic reversal ; marine sediment ; paleolimnology ; paleomagnetism
英文摘要: 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. © 2018 Elsevier Ltd
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被引频次[WOS]:6   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112032
Appears in Collections:气候减缓与适应

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作者单位: State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi'an AMS Center of IEECAS & Xi'an Jiaotong University, Xi'an, 710061, China; Open Studio for Oceanic-Continental Climate and Environment Changes (OCCEC), Qingdao National Laboratory for Marine Science and Technology, Qingdao, China

Recommended Citation:
Du Y.,Zhou W.,Xian F.,et al. 10Be signature of the Matuyama-Brunhes transition from the Heqing paleolake basin[J]. Quaternary Science Reviews,2018-01-01,199
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