Geochemistry and Petrogenesis of Granitoids at Sharang Eocene Porphyry Mo Deposit in the Main-Stage of India-Asia Continental Collision, Northern Gangdese, Tibet

doi:10.1111/j.1751-3928.2011.00181.x

	Geochemistry and Petrogenesis of Granitoids at Sharang Eocene Porphyry Mo Deposit in the Main-Stage of India-Asia Continental Collision, Northern Gangdese, Tibet
	Zhao, Junxing 1,2; Qin, Kezhang 1; Li, Guangming 1; Li, Jinxiang 1; Xiao, Bo 1,2; Chen, Lei 1,2
刊名	RESOURCE GEOLOGY
	2012
卷号	62 期号:1 页码:84-98
关键词	Eocene Gangdese metallogenic belt geochemistry porphyry molybdenum deposit Sharang Sr-Nd isotopes
ISSN号	1344-1698
DOI	10.1111/j.1751-3928.2011.00181.x
文献子类	Article
英文摘要	The Sharang porphyry Mo deposit is the first discovered Mo porphyry-type deposit in the Gangdese Metallogenic Belt. The orebody is hosted by the Eocene multi-stage composite intrusive complex which is emplaced in the Upper Permian Mengla Formation and cut by the Miocene dykes. Granite porphyry is recognized as the ore-bearing porphyry in the complex, which consists of quartz diorite, quartz monzonite, granite, prophyritic granite and post-mineral lamprophyre. Granodiorite porphyry and dacite porphyry intrude the granite porphyry. Geochemical data indicate that Sharang complex has a High-K calc-alkalinc to shoshonitic, metaluminous to slightly peraluminous composition. The Sharang complex rocks are enriched in large ion lithophile elements, depleted in high-field strength elements, Nb, Sr, P and Ti. REE patterns show slight enrichments in light REE relative to heavy REE and weak negative Eu anomalies. All rocks in this complex have a wide range of initial 87Sr/86Sr ratios (0.705605-0.712496) and lower eNd(t) values (-0.61--7.80). The geochemical data suggest highly oxidized-evolved magma and old continental materials may have been the magma source for the Sharang intrusive complex that host porphyry Mo mineralization. Eocene pre-ore and ore-forming rocks at Sharang may have formed by partial melting of mantle wedge and by mixing with old continental crust at the lower crust level. In contrast the post-ore rocks may have formed by partial melting of enriched lithospheric mantle.
WOS关键词	CENOZOIC VOLCANIC-ROCKS ; SOUTHERN TIBET ; TECTONIC EVOLUTION ; U-PB ; POSTCOLLISIONAL MAGMATISM ; ISOTOPIC CONSTRAINTS ; EURASIA COLLISION ; COPPER-DEPOSIT ; MANTLE SOURCE ; ARC BASALTS
WOS研究方向	Geology ; Mineralogy
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000298591200006
资助机构	NSFC(41072059 ; NSFC(41072059 ; MLR(20089932) ; MLR(20089932) ; 40772066) ; 40772066) ; NSFC(41072059 ; NSFC(41072059 ; MLR(20089932) ; MLR(20089932) ; 40772066) ; 40772066) ; NSFC(41072059 ; NSFC(41072059 ; MLR(20089932) ; MLR(20089932) ; 40772066) ; 40772066) ; NSFC(41072059 ; NSFC(41072059 ; MLR(20089932) ; MLR(20089932) ; 40772066) ; 40772066)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/84534]
专题	中国科学院地质与地球物理研究所
通讯作者	Qin, Kezhang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Junxing,Qin, Kezhang,Li, Guangming,et al. Geochemistry and Petrogenesis of Granitoids at Sharang Eocene Porphyry Mo Deposit in the Main-Stage of India-Asia Continental Collision, Northern Gangdese, Tibet[J]. RESOURCE GEOLOGY,2012,62(1):84-98.
APA	Zhao, Junxing,Qin, Kezhang,Li, Guangming,Li, Jinxiang,Xiao, Bo,&Chen, Lei.(2012).Geochemistry and Petrogenesis of Granitoids at Sharang Eocene Porphyry Mo Deposit in the Main-Stage of India-Asia Continental Collision, Northern Gangdese, Tibet.RESOURCE GEOLOGY,62(1),84-98.
MLA	Zhao, Junxing,et al."Geochemistry and Petrogenesis of Granitoids at Sharang Eocene Porphyry Mo Deposit in the Main-Stage of India-Asia Continental Collision, Northern Gangdese, Tibet".RESOURCE GEOLOGY 62.1(2012):84-98.