Apparent timing and duration of the Matuyama-Brunhes geomagnetic reversal in Chinese loess
Hui Zhao ; X.K. Qiang ; Y.B. Sun
刊名Geochemistry, Geophysics, Geosystems
2014-11
卷号15期号:11页码:4468–4480
关键词Chinese loess Apparent timing
英文摘要

       The Matuyama-Brunhes (MB) geomagnetic reversal in Chinese loess has been studied extensively as an important boundary for land-ocean stratigraphic and paleoclimatic correlations. However, the apparent timing and duration of the MB boundary remain controversial in Chinese loess deposits due to its inconsistent stratigraphic position and the uncertain chronologies. Here we synthesized high-resolution paleomagnetic records from four loess sequences in the central Chinese Loess Plateau and synchronized the loess-paleosol chronology by matching the grain-size variations to orbitally tuned grain-size time series. The synthesized paleomagnetic results reveal consistent features of the MB transition in Chinese loess, including the stratigraphic position (L8/S8 transition), timing (∼808–826 ka), duration (∼14–16 ka), and rapid directional oscillations. Compared with the MB transition in marine records (770–775 ka), the timing of the MB transition is relatively older and longer in Chinese loess, due to a complex interplay between different remanence acquisition mechanisms which occurred during the course of postdepositional physical and chemical processes.

学科主题地质学
收录类别SCI
语种英语
WOS记录号WOS:000348060800019
公开日期2015-06-06
内容类型期刊论文
源URL[http://ir.ieecas.cn/handle/361006/2618]  
专题地球环境研究所_古环境研究室
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GB/T 7714
Hui Zhao,X.K. Qiang,Y.B. Sun. Apparent timing and duration of the Matuyama-Brunhes geomagnetic reversal in Chinese loess[J]. Geochemistry, Geophysics, Geosystems,2014,15(11):4468–4480.
APA Hui Zhao,X.K. Qiang,&Y.B. Sun.(2014).Apparent timing and duration of the Matuyama-Brunhes geomagnetic reversal in Chinese loess.Geochemistry, Geophysics, Geosystems,15(11),4468–4480.
MLA Hui Zhao,et al."Apparent timing and duration of the Matuyama-Brunhes geomagnetic reversal in Chinese loess".Geochemistry, Geophysics, Geosystems 15.11(2014):4468–4480.
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