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Precise zircon U–Pb and molybdenite Re–Os dating of the Shuikoushan granodiorite-related Pb–Zn mineralization, southern Hunan, South China
Jin-Chuan Huang;  Jian-Tang Peng;  Jie-Hua Yang;  Bang-Lu Zhang;  Chun-Xia Xu
2015
发表期刊Ore Geology Reviews
卷号71页码:305-317
摘要

The Shuikoushan ore district, located in southern Hunan Province, South China, contains Pb–Zn–Au mineralization hosted in the Devonian to Triassic strata and Mesozoic granodiorite intrusions. Ore minerals are mainly pyrite, sphalerite, galena and minor molybdenite. Molybdenite, usually intergrown with pyrite, formed during Pb–Zn hydrothermal mineralization. In order to determine the precise age of Pb–Zn mineralization and further understand the relationship between magma emplacement and hydrothermal mineralization in the ore district, molybdenite Re–Os dating and zircon SIMS U–Pb dating were undertaken. The zircon U–Pb dating reveals that the granodiorite intrusion was emplaced at 158.8 ± 1.8 Ma (MSWD = 0.40). Re–Os isotopic age of seven molybdenite samples yields model ages ranging from 157.5 ± 2.5 Ma to 161.0 ± 2.4 Ma, and gives a well-defined 187Re–187Os isochron age of 157.8 ± 1.4 Ma (2σ, MSWD = 1.3), indicating the timing of Pb–Zn mineralization in the Shuikoushan ore district at about 158 Ma. This date coincides well with the zircon SIMS U–Pb age of the granodiorite, revealing a genetic association between the Pb–Zn mineralization and the granitic magmatism. Combined with geochronological data published for other Pb–Zn–(Cu) deposits in southern Hunan, it can be concluded that the granodiorite-related Pb–Zn mineralization throughout southern Hunan mainly occurred at 160–156 Ma, rather than 180–170 Ma or 170–160 Ma as considered previously. The Pb–Zn mineralization and major W–Sn mineralization in southern Hunan are coeval and may be related to the same geological event.

关键词Sims U–pb Dating re–os Dating molybdenite pb–zn Mineralization southern Hunan south China
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/9541
专题矿床地球化学国家重点实验室
作者单位1.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, PR China
2.University of Chinese Academy of Sciences, Beijing 10049, PR China
3.Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education, School of Geosciences and Info-physics, Central South University, Changsha 410083, PR China
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GB/T 7714
Jin-Chuan Huang;Jian-Tang Peng;Jie-Hua Yang;Bang-Lu Zhang;Chun-Xia Xu. Precise zircon U–Pb and molybdenite Re–Os dating of the Shuikoushan granodiorite-related Pb–Zn mineralization, southern Hunan, South China[J]. Ore Geology Reviews,2015,71:305-317.
APA Jin-Chuan Huang;Jian-Tang Peng;Jie-Hua Yang;Bang-Lu Zhang;Chun-Xia Xu.(2015).Precise zircon U–Pb and molybdenite Re–Os dating of the Shuikoushan granodiorite-related Pb–Zn mineralization, southern Hunan, South China.Ore Geology Reviews,71,305-317.
MLA Jin-Chuan Huang;Jian-Tang Peng;Jie-Hua Yang;Bang-Lu Zhang;Chun-Xia Xu."Precise zircon U–Pb and molybdenite Re–Os dating of the Shuikoushan granodiorite-related Pb–Zn mineralization, southern Hunan, South China".Ore Geology Reviews 71(2015):305-317.
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