气候变化领域集成服务门户(CCPortal): Kinematics of the crust around the Ama Drime Massif (southern Tibet)

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DOI	10.1016/j.jseaes.2012.06.010
	Kinematics of the crust around the Ama Drime Massif (southern Tibet) - Constraints from paleomagnetic results
	Crouzet, C.; Appel, E.; El Bay, R.; Ding, L.; Dunkl, I.; Montomoli, C.; Carosi, R.; Zhang, Q. H.; Wauschkuhn, B.
通讯作者	Crouzet, C (通讯作者)
发表日期	2012
ISSN	1367-9120
EISSN	1878-5786
起始页码	119
结束页码	131
卷号	58
英文摘要	Secondary magnetic remanences are used to study late-orogenic rotation and tilting on a E-W transect in southern Tibet at similar to 28.5 degrees N. Sampling was performed on both sides of the Ama Drime Massif (ADM). Remanent magnetization resides in pyrrhotite formed during metamorphism and is related to the last cooling event through 325 degrees C (Curie temperature of pyrrhotite). The existence of antipodal pTRMs demonstrates that the ChRM is of thermoremanent origin and was acquired during cooling of the Tethyan metasediments. Penetrative deformation was still going on in Ronghbuk area until ca 250 degrees C, whereas it was already completed in Dinggye area. Significant departures from the expected field direction during the age of remanence acquisition cannot be interpreted by consistent vertical axis rotation of blocks. Antagonist deviations on both sides of the ADM are explained as tiltings around an horizontal axis striking similar to N20 degrees. These tiltings are estimated to be younger than 13-12 Ma and they are related to the ADM exhumation initiated since 33 Ma. (C) 2012 Elsevier Ltd. All rights reserved.
关键词	GREATER HIMALAYAN SEQUENCE EASTERN TETHYAN HIMALAYA TECTONIC EVOLUTION SEDIMENTARY SERIES WESTERN ALPS MAGNETIC-ANISOTROPY HIDDEN VALLEY CENTRAL NEPAL LOWER DOLPO PYRRHOTITE
英文关键词	Paleomagnetism; Himalaya; Pyrrhotite; Rotation; Tilting; Secondary magnetization; Ama Drime
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000309799200011
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
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/258090
推荐引用方式 GB/T 7714	Crouzet, C.,Appel, E.,El Bay, R.,et al. Kinematics of the crust around the Ama Drime Massif (southern Tibet) - Constraints from paleomagnetic results[J]. 中国科学院青藏高原研究所,2012,58.
APA	Crouzet, C..,Appel, E..,El Bay, R..,Ding, L..,Dunkl, I..,...&Wauschkuhn, B..(2012).Kinematics of the crust around the Ama Drime Massif (southern Tibet) - Constraints from paleomagnetic results.JOURNAL OF ASIAN EARTH SCIENCES,58.
MLA	Crouzet, C.,et al."Kinematics of the crust around the Ama Drime Massif (southern Tibet) - Constraints from paleomagnetic results".JOURNAL OF ASIAN EARTH SCIENCES 58(2012).