Himalayan detrital chromian spinels and timing of Indus-Yarlung ophiolite erosion

doi:10.1016/j.tecto.2014.02.003

	Himalayan detrital chromian spinels and timing of Indus-Yarlung ophiolite erosion
	Hu, Xiumian 1; An, Wei 1; Wang, Jiangang 1,2; Garzanti, Eduardo 3; Guo, Ronghua 1,4
刊名	TECTONOPHYSICS
	2014-05-07
卷号	621 页码:60-68
关键词	Detrital chromian spinets Himalaya Indus-Yarlung ophiolite Southern Tibet
ISSN号	0040-1951
DOI	10.1016/j.tecto.2014.02.003
文献子类	Article
英文摘要	The geochemistry of detrital chromian spinels is commonly used to discriminate provenance from different tectonic settings of mafic and ultramafic igneous rocks. Detrital spinels in Cenozoic foreland-basin successions fed from the Himalaya Orogen were assertively interpreted as sourced from the ophiolitic rocks of the Indus-Yarlung suture zone. This study compares the geochemistry of detrital Cr-spinels from the Tethys Himalaya passive margin and Cretaceous Xigaze forearc successions with those from the Indus-Yarlung ophiolites. Cr-spinels in the Indus-Yarlung ophiolites have low TiO2 (mostly <0.2%) and high Al2O3 (10-48%). Detrital Cr-spinels from the Tethyan Himalaya have instead high TiO2 (mostly >0.2%) and low Al2O3 (mainly 6-23%), indicating a rift-related basaltic origin. Detrital Cr-spinels from the Xigaze forearc basin have either low TiO2 (mostly <0.2%) and low Al2O3 (4-34%), suggesting provenance from a supra-subduction-zone peridotite, or high TiO2 (>1.0%), indicating intra-plate basaltic origin. Compositional fingerprints of detrital Cr-spinels from Lower Eocene foreland-basin strata in the central-eastern Himalaya indicate provenance from the Lhasa Block without input from the Indus-Yarlung ophiolites. Only Cr-spinels from the Lower Eocene foreland-basin strata in the north-western Himalaya and the Upper Eocene-Lower Miocene remnant-ocean turbidites of the Bengal basin are mostly ophiolite-derived. The Indus-Yarlung ophiolites were thus emplaced and exposed to erosion since the Early Eocene (>50 Ma) in the NW Himalaya, but only subsequently (50-38 Ma) in the eastern Himalaya. (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词	INDIA-ASIA COLLISION ; ZANGBO SUTURE ZONE ; FORE-ARC BASIN ; SOUTHERN TIBET ; FACIES ARCHITECTURE ; TECTONIC EVOLUTION ; ULTRAMAFIC ROCKS ; LADAKH HIMALAYA ; PASSIVE MARGIN ; EASTERN TIBET
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000336188800003
资助机构	MOST 973 Project(2012CB822001) ; MOST 973 Project(2012CB822001) ; NSFC Project(41172092) ; NSFC Project(41172092) ; MOST 973 Project(2012CB822001) ; MOST 973 Project(2012CB822001) ; NSFC Project(41172092) ; NSFC Project(41172092) ; MOST 973 Project(2012CB822001) ; MOST 973 Project(2012CB822001) ; NSFC Project(41172092) ; NSFC Project(41172092) ; MOST 973 Project(2012CB822001) ; MOST 973 Project(2012CB822001) ; NSFC Project(41172092) ; NSFC Project(41172092)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85424]
专题	中国科学院地质与地球物理研究所
通讯作者	Hu, Xiumian
作者单位	1.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposit Res, Nanjing 210093, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Univ Milano Bicocca, Dept Earth & Environm Sci, I-20126 Milan, Italy 4.Lvliang Univ, Dept Min Engn, Lvliang 033000, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Hu, Xiumian,An, Wei,Wang, Jiangang,et al. Himalayan detrital chromian spinels and timing of Indus-Yarlung ophiolite erosion[J]. TECTONOPHYSICS,2014,621:60-68.
APA	Hu, Xiumian,An, Wei,Wang, Jiangang,Garzanti, Eduardo,&Guo, Ronghua.(2014).Himalayan detrital chromian spinels and timing of Indus-Yarlung ophiolite erosion.TECTONOPHYSICS,621,60-68.
MLA	Hu, Xiumian,et al."Himalayan detrital chromian spinels and timing of Indus-Yarlung ophiolite erosion".TECTONOPHYSICS 621(2014):60-68.