Zircon SHRIMP U-Pb dating of porphyry vein from the Jiama copper polymetallic deposit in Tibet and its significance

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	Zircon SHRIMP U-Pb dating of porphyry vein from the Jiama copper polymetallic deposit in Tibet and its significance
	Ying, LJ (Ying LiJuan); Tang, JX (Tang JuXing); Wang, DH (Wang DengHong); Zheng, WB (Zheng WenBao); Qin, ZP (Qin ZhiPeng); Zhang, L (Zhang Li)
刊名	ACTA PETROLOGICA SINICA
	2011
卷号	27 期号:7 页码:2095-2102
关键词	Zircon SHRIMP age Porphyry vein Diagenesis and mineralization age Jiama Tibet
ISSN号	1000-0569
英文摘要	The Jiama copper polymetallic deposit is an important ore deposit with a super-large scale in the Gangdese metallogenic belt of Tibet. Re-Os elating of molybdenites occurred in skarn, porphyry and hornfels has indicated the metallogenic period of Cu-Mo mineralization during 17Ma to 14Ma, whereas the research on its age of diagenesis is rather lack, especially for the porphyry veins as south-north distributed outcrops. In this paper, two samples of slightly mineralized porphyry rocks; granite porphyry (sample JM52-0) and granitic diorite porphyry (sample JM52-46.7), have been collected from the No. 52 adit in Qianshan of the mining area. Through zircon SHRIMP U-Ph elating at the first time, their Pb-206/U-238 - Pb-207/U-235 concord ages are 14.2 +/- 0.2Ma and 14.1 +/- 0.3Ma, respectively. The ages from the zircon SHRIMP U-Pb elating in this paper mean the crystallization age of magmatic zircon representing the south-north distributed granite and granitic diorite porphyry outcrops. The diagenesis age of this type porphyry veins is at the same period of ore-hearing porphyry intrusive event related to the south-north normal fault system and rift zone in Gangdese(18 similar to 12Ma). Diagenesis and mineralization age of the Jiama copper polymetallic deposit shows the similar period for metallogenesis and diagenesis, which is similar to other porphyry-skarn type ore deposits in the east part of the Gangdese metallogenic belt with a strong concentration of mineralization during 17 similar to 14Ma, indicating the magmatic-tectonic events in Miocene in the Gangdese and the genesis relationship between Cu-Mo mineralization and hydrothermal process in Jiama.
学科主题	矿床地质
WOS关键词	GEOCHRONOLOGY ; ROCKS ; AGE
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000293800900017
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39311]
专题	中国地质调查局
作者单位	Chengdu Inst Geol & Mineral Resources, Chengdu 610081, Peoples R China
推荐引用方式 GB/T 7714	Ying, LJ ,Tang, JX ,Wang, DH ,et al. Zircon SHRIMP U-Pb dating of porphyry vein from the Jiama copper polymetallic deposit in Tibet and its significance[J]. ACTA PETROLOGICA SINICA,2011,27(7):2095-2102.
APA	Ying, LJ ,Tang, JX ,Wang, DH ,Zheng, WB ,Qin, ZP ,&Zhang, L .(2011).Zircon SHRIMP U-Pb dating of porphyry vein from the Jiama copper polymetallic deposit in Tibet and its significance.ACTA PETROLOGICA SINICA,27(7),2095-2102.
MLA	Ying, LJ ,et al."Zircon SHRIMP U-Pb dating of porphyry vein from the Jiama copper polymetallic deposit in Tibet and its significance".ACTA PETROLOGICA SINICA 27.7(2011):2095-2102.