气候变化领域集成服务门户(CCPortal): New paleomagnetic constraints on middle Miocene strike-slip faulting along the middle Altyn Tagh Fault

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DOI	10.1002/2017JB014058
	New paleomagnetic constraints on middle Miocene strike-slip faulting along the middle Altyn Tagh Fault
	Li, Bingshuai; Yan, Maodu; Zhang, Weilin; Fang, Xiaomin; Meng, Qingquan; Zan, Jinbo; Chen, Yi; Zhang, Dawen; Yang, Yongpeng; Guan, Chong
通讯作者	Yan, MD (通讯作者)
发表日期	2017
ISSN	2169-9313
EISSN	2169-9356
起始页码	4106
结束页码	4122
卷号	122 期号:6
英文摘要	Knowledge of the evolution of the Altyn Tagh Fault (ATF) has significant implications for our understanding of the tectonic deformation of the Tibetan Plateau. Controversy exists regarding the formation of the orocline-like arcuate structures or curved thrust faults south of the ATF. In this paper, we conducted a paleomagnetic rotation study of the Akatengnengshan (AK) and Youshashan (YSS) anticlines to determine whether the changes in the anticlines' axes were caused by frictional drag associated with sinistral strike-slip faulting along the ATF. No significant paleomagnetic rotations during the last 20Ma were observed at the Xichagou and Laomangai localities, which are situated along the YSS anticline, whereas significant counterclockwise (CCW) rotations of similar to 50 degrees that occurred between similar to 16.2 and 11.1Ma were noted at the Yitunbulake locality, which lies along the western edge of the AK anticline. This amount of CCW rotation is consistent with the difference in axes between the AK and YSS anticlines. Combined with other geological evidence, we believe that the middle ATF was active between similar to 16 and 11Ma. Frictional drag associated with sinistral strike-slip motion likely resulted in the similar to 50 degrees CCW rotation of the AK anticline, which was originally straight or parallel to the YSS anticline. There was concentrated or insignificant strike-slip faulting along the middle ATF before similar to 16Ma, but rapid and distributed (< 40km) strike-slip faulting occurred between similar to 16 and 11Ma at a rate of 10mm/yr, and the minimum displacement was similar to 50km.
关键词	NORTHERN TIBETAN PLATEAU WESTERN QAIDAM BASIN RESOLUTION MAGNETO STRATIGRAPHY LATE CENOZOIC DEFORMATION APATITE FISSION-TRACK QILIAN-SHAN NORTHEASTERN MARGIN TECTONIC EVOLUTION EXHUMATION HISTORY QINGHAI PROVINCE
英文关键词	Altyn Tagh Fault; paleomagnetism; rotations; middle Miocene
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000405930700002
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/259011
推荐引用方式 GB/T 7714	Li, Bingshuai,Yan, Maodu,Zhang, Weilin,et al. New paleomagnetic constraints on middle Miocene strike-slip faulting along the middle Altyn Tagh Fault[J]. 中国科学院青藏高原研究所,2017,122(6).
APA	Li, Bingshuai.,Yan, Maodu.,Zhang, Weilin.,Fang, Xiaomin.,Meng, Qingquan.,...&Guan, Chong.(2017).New paleomagnetic constraints on middle Miocene strike-slip faulting along the middle Altyn Tagh Fault.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,122(6).
MLA	Li, Bingshuai,et al."New paleomagnetic constraints on middle Miocene strike-slip faulting along the middle Altyn Tagh Fault".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 122.6(2017).