Ar-40/Ar-39 dating of the Jiali and Gaoligong shear zones: Implications   for crustal deformation around the Eastern Himalayan Syntaxis

doi:10.1016/j.jseaes.2008.10.009

CORC > 北京大学 > 地球与空间科学学院

	Ar-40/Ar-39 dating of the Jiali and Gaoligong shear zones: Implications for crustal deformation around the Eastern Himalayan Syntaxis
	Lin, Te-Hsien ; Lo, Ching-Hua ; Chung, Sun-Lin ; Hsu, Fang-Jui ; Yeh, Meng-Wan ; Lee, Tung-Yi ; Ji, Jian-Qing ; Wang, Yi-Zhau ; Liu, Dunyi
刊名	journal of asian earth sciences
	2009
关键词	Ar-40/Ar-39 dating Shear zone Eastern Himalayan Syntaxis Tibet SHAN-RED-RIVER POSITIONING SYSTEM MEASUREMENTS TIBETAN TECTONIC EVOLUTION CONTINENTAL EXTRUSION SOUTHERN TIBET SE ASIA CHINA VIETNAM YUNNAN MOVEMENT
DOI	10.1016/j.jseaes.2008.10.009
英文摘要	We conducted a comprehensive Ar-40/Ar-39 geochronological study of the Jiali and Gaoligong shear zones to obtain a better understanding of crustal deformation and tectonic evolution around the Eastern Himalayan Syntaxis (EHS). The new age data reveal that the main phase of deformation in the Jiali and Gaoligong shear zones occurred from 22 to 11 Ma and from 18 to 13 Ma, respectively. Structural data collected during this study indicate that the Jiali shear zone underwent a change in shear sense from sinistral to dextral during its movement history. Based on a comparison with the deformation histories of other major shear zones in the region, we argue that the initial sinistral motion recorded by the Jiali shear zone was coincident with that of the Ailao Shan-Red River shear zone, which marked the northern boundary of the southeastward extrusion of the Indochina block during the Early Miocene. From the Middle Miocene (similar to 18 Ma), the Jiali shear zone changed to dextral displacement, becoming linked with the dextral Gaoligong shear zone that developed as a consequence of continued northward indentation of the Indian continent into Asia. Since this time, the Jiali and Gaoligong shear zones have been united, defining the southwestern boundary of the EHS during clockwise rotation of the eastward-extruding Tibetan block, as revealed by recent GPS data. The temporal change in regional deformation pattern from southeastward block extrusion to clockwise rotation of crustal fragments may have played an important role in the development of the eastern Himalayan drainage system around the EHS. (C) 2008 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000263569900008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geosciences, Multidisciplinary; SCI(E); 36; ARTICLE; 5; 674-685; 34
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/245861]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Lin, Te-Hsien,Lo, Ching-Hua,Chung, Sun-Lin,et al. Ar-40/Ar-39 dating of the Jiali and Gaoligong shear zones: Implications for crustal deformation around the Eastern Himalayan Syntaxis[J]. journal of asian earth sciences,2009.
APA	Lin, Te-Hsien.,Lo, Ching-Hua.,Chung, Sun-Lin.,Hsu, Fang-Jui.,Yeh, Meng-Wan.,...&Liu, Dunyi.(2009).Ar-40/Ar-39 dating of the Jiali and Gaoligong shear zones: Implications for crustal deformation around the Eastern Himalayan Syntaxis.journal of asian earth sciences.
MLA	Lin, Te-Hsien,et al."Ar-40/Ar-39 dating of the Jiali and Gaoligong shear zones: Implications for crustal deformation around the Eastern Himalayan Syntaxis".journal of asian earth sciences (2009).