The continental crust contributes to magmatic hydrothermal gold deposit in Ciemas, West Java, Indonesia: Constraints from Hf isotopes of zircons and in situ Pb isotopes of sulfides | |
Chengquan Wu; Zhengwei Zhang; Mega Fatimah Rosana; Qiao Shu; Chaofei Zheng; Jinhong Xu; Xiyao Li; Ziru Jin | |
刊名 | Ore Geology Reviews |
2019 | |
卷号 | 112页码:1-15 |
关键词 | Hf Isotopein Situ Pb Isotope porphyry-epithermal Mineralization magmatic Origin west Java, Indonesia |
英文摘要 | Multiple periods of arc magmatism induced by the subduction of the Indian-Australian Plate northward developed on Java Island, and multistage porphyry-epithermal metallogenic systems occurred within the Late Eocene-Early Miocene and the Late Miocene-Early Pleistocene magmatic belts. These porphyry-epithermal metallogenic systems have obvious spatial variations. In West Java, there are large populations of low-sulfidation type epithermal deposits, while East Java and its east are characterized by the occurrences of porphyry deposits. However, the newly discovered Ciemas deposit in West Java, a Middle Miocene (~17 Ma) porphyry-epithermal Au deposit, provides an opportunity for further understanding the porphyry-epithermal mineralization in Java. To elucidate the controlling factors of porphyry-epithermal mineralization in West Java, we analyzed the Hf isotopies of zircons from the igneous rocks and in situ Pb isotopes of sulfides (galena, pyrite, arsenopyrite) in the Ciemas deposit. The results show that the zircons εHf (t) of igneous rocks are uniform with an average value of −11.5 ± 0.39, and the peak value of TDM2 is 1500–1650 Ma, suggesting the Middle Miocene arc magmatism in Ciemas suffered intense crustal contamination. The Pb isotopic compositions of sulfides are very uniform and have high amounts of radiogenic lead. The mean ratios of 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb are 39.343 ± 0.059, 15.73 ± 0.015 and 18.854 ± 0.025, respectively, indicating that the mineralization materials of the Ciemas gold deposit mainly originated from ancient continental crust. The multistage arc magmatism induced by the subduction of the Indian-Australian Plate northward beneath Java Island control the porphyry and epithermal mineralization in Java. The Middle Miocene arc magmatism in Ciemas contaminated intensely by the Sundaland, and the ancient continental crust provides the main metal source for the Ciemas deposit in West Java. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/10843] |
专题 | 地球化学研究所_矿床地球化学国家重点实验室 |
作者单位 | 1.Faculty of Geology, University of Padjadjaran, Jln. Raya Bandung – Sumedang Km. 21, Jatinangor, Sumedang 45363, Indonesia 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China |
推荐引用方式 GB/T 7714 | Chengquan Wu;Zhengwei Zhang;Mega Fatimah Rosana;Qiao Shu;Chaofei Zheng;Jinhong Xu;Xiyao Li;Ziru Jin. The continental crust contributes to magmatic hydrothermal gold deposit in Ciemas, West Java, Indonesia: Constraints from Hf isotopes of zircons and in situ Pb isotopes of sulfides[J]. Ore Geology Reviews,2019,112:1-15. |
APA | Chengquan Wu;Zhengwei Zhang;Mega Fatimah Rosana;Qiao Shu;Chaofei Zheng;Jinhong Xu;Xiyao Li;Ziru Jin.(2019).The continental crust contributes to magmatic hydrothermal gold deposit in Ciemas, West Java, Indonesia: Constraints from Hf isotopes of zircons and in situ Pb isotopes of sulfides.Ore Geology Reviews,112,1-15. |
MLA | Chengquan Wu;Zhengwei Zhang;Mega Fatimah Rosana;Qiao Shu;Chaofei Zheng;Jinhong Xu;Xiyao Li;Ziru Jin."The continental crust contributes to magmatic hydrothermal gold deposit in Ciemas, West Java, Indonesia: Constraints from Hf isotopes of zircons and in situ Pb isotopes of sulfides".Ore Geology Reviews 112(2019):1-15. |
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