Apparent timing and duration of the Matuyama-Brunhesgeomagnetic reversal in Chinese loess
Zhao,H(Zhao,Hui)[1,2]; Sun,YB(Sun,Youbin)[1]; Qiang,XK(Qiang,Xiaoke)[1]
刊名Geochemistry, Geophysics, Geosystems
2014-11
卷号15期号:11页码:4468-4480
DOI10.1002/2014GC005497
文献子类期刊论文
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.

语种英语
内容类型期刊论文
源URL[http://ir.ieecas.cn/handle/361006/9863]  
专题地球环境研究所_古环境研究室
通讯作者Sun,YB(Sun,Youbin)[1]
作者单位1.School of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences,Xian, China;
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GB/T 7714
Zhao,H,Sun,YB,Qiang,XK. Apparent timing and duration of the Matuyama-Brunhesgeomagnetic reversal in Chinese loess[J]. Geochemistry, Geophysics, Geosystems,2014,15(11):4468-4480.
APA Zhao,H,Sun,YB,&Qiang,XK.(2014).Apparent timing and duration of the Matuyama-Brunhesgeomagnetic reversal in Chinese loess.Geochemistry, Geophysics, Geosystems,15(11),4468-4480.
MLA Zhao,H,et al."Apparent timing and duration of the Matuyama-Brunhesgeomagnetic reversal in Chinese loess".Geochemistry, Geophysics, Geosystems 15.11(2014):4468-4480.
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