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DOI	10.1016/j.epsl.2011.02.055
	Provenance analysis of upper Cretaceous strata in the Tethys Himalaya, southern Tibet: Implications for timing of India-Asia collision
	Cai, Fulong; Ding, Lin; Yue, Yahui
通讯作者	Ding, L (通讯作者)
发表日期	2011
ISSN	0012-821X
EISSN	1385-013X
起始页码	195
结束页码	206
卷号	305 期号:1-2
英文摘要	The provenance of upper Cretaceous strata in the Tethys Himalaya provides critical constraints on the closure time of the Neo-Tethys Ocean and the initial India-Asia collision. This paper reports detailed petrographic studies, in-situ detrital zircon U-Pb ages and Lu-Hf isotopic analyses, whole rock Nd-isotopes, and Cr-spinel electronic microprobe data from upper Cretaceous clastic sedimentary rocks of the Tethys Himalaya near Gyangze, southern Tibet. The Berriasian-Coniacian Jiabula Formation consists of black mudstone, chert and minor quartz arenite, and is dominated by detrital zircons with Archean-Cambrian U-Pb ages which were most likely derived from the Indian continent. Overlying conformably is the Santonian-Maastrichtian Chuangde Formation, which consists of red shale, limestone and chert. The Chuangde Formation is in turn overlain by the late Maastrichtian-late Paleocene Zongzhuo Formation, which is composed of black mudstone and lithic sandstone enclosing various olistoliths of sandstone, limestone and chert. The Rilang conglomerate is a lens which is located within the upper part of the Zongzhuo Formation and consists of an upward-thinning and fining succession of volcanic conglomerate, sandstone and black mudstone. The Zongzhuo Formation and the Rilang conglomerate record an abrupt influx of Cretaceous zircon grains with juvenile Hf isotopic compositions, arc-related Cr-spinels and positive epsilon Nd-(0) sediments, suggesting an arc and suture-zone provenance. The change in provenance of upper Cretaceous strata from the southern Indian continent to a northern arc and suture zone is attributed to either (1) initial collision between the Indian plate and Lhasa terrane, or (2) initial collision between the Indian plate and an intra-oceanic arc. We prefer option (1) that the initiation of India-Asia collision occurred during Maastrichtian (similar to 70-65 Ma). (C) 2011 Elsevier B.V. All rights reserved.
关键词	TSANGPO SUTURE ZONE FORE-ARC BASIN ZIRCON U-PB TECTONIC EVOLUTION ISOTOPIC CONSTRAINTS MELT INCLUSIONS LHASA TERRANE GANGDESE BATHOLITH VOLCANIC-ROCKS RED BEDS
英文关键词	Tethys Himalaya; provenance analysis; detrital zircons; Cr-spinel; Nd-isotopes; initial collision
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000290192800020
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/257842
推荐引用方式 GB/T 7714	Cai, Fulong,Ding, Lin,Yue, Yahui. Provenance analysis of upper Cretaceous strata in the Tethys Himalaya, southern Tibet: Implications for timing of India-Asia collision[J]. 中国科学院青藏高原研究所,2011,305(1-2).
APA	Cai, Fulong,Ding, Lin,&Yue, Yahui.(2011).Provenance analysis of upper Cretaceous strata in the Tethys Himalaya, southern Tibet: Implications for timing of India-Asia collision.EARTH AND PLANETARY SCIENCE LETTERS,305(1-2).
MLA	Cai, Fulong,et al."Provenance analysis of upper Cretaceous strata in the Tethys Himalaya, southern Tibet: Implications for timing of India-Asia collision".EARTH AND PLANETARY SCIENCE LETTERS 305.1-2(2011).