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DOI	10.1029/2007JB005264
	Latest Olduvai short-lived reversal episodes recorded in Chinese loess
	Yang, Tianshui; Hyodo, Masayuki; Yang, Zhenyu; Ding, Lin; Li, Huidi; Fu, Jianli; Wang, Shubing; Wang, Hongwei; Mishima, Toshiaki
通讯作者	Yang, TS (通讯作者)
发表日期	2008
ISSN	2169-9313
EISSN	2169-9356
卷号	113 期号:B5
英文摘要	A duplicate high-resolution magnetic record was obtained from two parallel loess sections separated by about 300 m near Baoji city, southern Chinese Loess Plateau. This reveals at least eight short-lived reversed polarity episodes in the uppermost part of the Olduvai normal polarity subchronozone. Rock magnetic experiments and anisotropy of low-field magnetic susceptibility confirm that the multiple occurrence of short-lived reversals is not due to rock-magnetic and/or sedimentary causes. Assuming a constant accumulation rate within the Olduvai subchron, the short episode zone was estimated to span about 24-30 ka and 24-31 ka for the two sections, respectively. The duration of each short episode ranges from about 0.3 ka to 2.1 ka. The present results together with previous worldwide observations show that the occurrence of numerous short reversals is peculiar to the latest Olduvai subchron. The geodynamo may have been in an anomalous state at that time.
关键词	MATUYAMA-BRUNHES BOUNDARY GEOMAGNETIC EXCURSIONS MAGNETIC-SUSCEPTIBILITY POLARITY TRANSITION ICELAND BASIN GRAIN-SIZE PALEOCLIMATIC INTERPRETATION LOESS/PALAEOSOL SEQUENCE ASTRONOMICAL CALIBRATION ENVIRONMENTAL MAGNETISM
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000256141500003
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257604
推荐引用方式 GB/T 7714	Yang, Tianshui,Hyodo, Masayuki,Yang, Zhenyu,et al. Latest Olduvai short-lived reversal episodes recorded in Chinese loess[J]. 中国科学院青藏高原研究所,2008,113(B5).
APA	Yang, Tianshui.,Hyodo, Masayuki.,Yang, Zhenyu.,Ding, Lin.,Li, Huidi.,...&Mishima, Toshiaki.(2008).Latest Olduvai short-lived reversal episodes recorded in Chinese loess.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,113(B5).
MLA	Yang, Tianshui,et al."Latest Olduvai short-lived reversal episodes recorded in Chinese loess".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 113.B5(2008).