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Apparent timing and duration of the Matuyama-Brunhes geomagnetic reversal in Chinese loess
Hui Zhao; X.K. Qiang; Y.B. Sun
2014-11
Source PublicationGeochemistry, Geophysics, Geosystems
Volume15Issue:11Pages:4468–4480
Abstract

       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.

KeywordChinese Loess Apparent Timing
Subject Area地质学
Indexed BySCI
Language英语
WOS IDWOS:000348060800019
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/2618
Collection古环境研究室
Recommended Citation
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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