气候变化领域集成服务门户(CCPortal): Evidence for Early (> 44 Ma) Himalayan Crustal Thickening, Tethyan Himalaya, southeastern Tibet

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DOI	10.1016/j.epsl.2008.06.038
	Evidence for Early (> 44 Ma) Himalayan Crustal Thickening, Tethyan Himalaya, southeastern Tibet
	Aikman, Amos B.; Harrison, T. Mark; Lin, Ding
通讯作者	Harrison, TM (通讯作者)
发表日期	2008
ISSN	0012-821X
EISSN	1385-013X
起始页码	14
结束页码	23
卷号	274 期号:1-2
英文摘要	Comprehensive understanding of Himalayan orogenesis is limited in part by a poor knowledge of the Eohimalayan episode; a phase of tectonic activity predating the better understood Neohimalayan crustal thickening associated with coaxial deformation along the Main Central thrust. The Cambo-Ordovician to Tertiary metasedimentary sequences outcropping within the Tethyan Himalaya are the structurally highest units of the Himalayan Fold and Thrust Belt; they and are inferred to have been the first to have accreted to Asia. A compilation of data from transects along the length of the main Himalayan arc shows that the Tethyan sequences have experienced at least five deformation events, although the timing of these episodes is poorly constrained. Emplacement of a series of undeformed granitoid bodies following the second of these events, which accounts for the majority of crustal thickening in the Tethyan Himalayan units, is constrained by U-Pb zircon dating to be older than 44.1 +/- 1.2 Ma. Thus, significant crustal thickening had occurred along the length of the proto-Himalayan arc by the mid-Eocene, or within 10 to 20 myr of the initiation of Himalayan orogenesis. (C) 2008 Elsevier ELV. All rights reserved.
关键词	FOLD-THRUST BELT U-PB AGES TECTONIC EVOLUTION STRUCTURAL EVOLUTION SOUTHERN TIBET TERTIARY CONVERGENCE CENTRAL NEPAL KANGMAR DOME SUTURE ZONE HISTORY
英文关键词	Tethyan Himalaya; Tibet; U-Pb zircon; Dala granitoids
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000259912800002
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
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/257594
推荐引用方式 GB/T 7714	Aikman, Amos B.,Harrison, T. Mark,Lin, Ding. Evidence for Early (> 44 Ma) Himalayan Crustal Thickening, Tethyan Himalaya, southeastern Tibet[J]. 中国科学院青藏高原研究所,2008,274(1-2).
APA	Aikman, Amos B.,Harrison, T. Mark,&Lin, Ding.(2008).Evidence for Early (> 44 Ma) Himalayan Crustal Thickening, Tethyan Himalaya, southeastern Tibet.EARTH AND PLANETARY SCIENCE LETTERS,274(1-2).
MLA	Aikman, Amos B.,et al."Evidence for Early (> 44 Ma) Himalayan Crustal Thickening, Tethyan Himalaya, southeastern Tibet".EARTH AND PLANETARY SCIENCE LETTERS 274.1-2(2008).