Zircon U-Pb and Molybdenite Re-Os Geochronology and Geological Significance of the Baoshan Porphyry Cu Polymetallic Deposit in Jiangxi Province

被引:0
作者
Jia, Liqiong [1 ,2 ,3 ]
Wang, Liang [4 ]
机构
[1] China Geol Survey, Dev & Res Ctr, Beijing 100037, Peoples R China
[2] Natl Geol Arch China, Beijing 100037, Peoples R China
[3] China Univ Geosci, Beijing 100083, Peoples R China
[4] Chinese Armed Police Force, Gold Geol Inst, Langfang 065000, Peoples R China
来源
2ND INTERNATIONAL CONFERENCE ON MATERIALS SCIENCE, RESOURCE AND ENVIRONMENTAL ENGINEERING (MSREE 2017) | 2017年 / 1890卷
关键词
Porphyry Copper Polymetallic; Molybdenite of Six Deposit; Granodiorite-Porphyry;
D O I
10.1063/1.5005234
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Baoshan porphyry Cu polymetallic deposit belongs to Jiujiang-Ruichang Cu-Au ore field, which is a component part of the Middle-Lower Yangtze River Cu-Au metallogenic belt. The U-Pb LA-MC-ICP MS dating of the zircons from Baoshan granodiorite porphyry yields an age of 147.81 +/- 0.48Ma (MSWD=1.07). Six molybdenite samples separated from Baoshan deposit are used for Re-Os dating and obtained the weighted average age of 147.42 +/- 0.84Ma and an isochron age of 147.7 +/- 1.2Ma. These ages suggest that the mineralization in the Baoshan deposit is genetically associated to the granodiorite porphyry, and the process of rock-and ore-forming is continuous. These data indicate that ages of intrusion and ore-body from Baoshan deposit are almost identical to other typical magmatic intrusion and deposits in Jiujiang- Ruichang metallogenic district. It is inferred that the Baoshan deposit was formed in the transition from EW-striking Indosinian tectonic domain to NE-striking Paleo-Pacific tectonic domain.
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页数:3
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