Mantle volatiles and heat contributions in high sulfidation epithermal deposit from the Zijinshan Cu-Au-Mo-Ag orefield, Fujian Province, China: Evidence from He and Ar isotopes | |
Wu, Li-Yan1; Hu, Rui-Zhong1; Li, Xiao-Feng1,2; Stuart, Finlay M.1,3; Jiang, Guo-Hao1; Qi, You-Qiang1; Zhu, Jing-Jing1 | |
刊名 | CHEMICAL GEOLOGY |
2018-03-05 | |
卷号 | 480页码:58-65 |
关键词 | He and Ar isotopes Ore-forming fluids Mantle magmas Zijinshan orefield China |
ISSN号 | 0009-2541 |
DOI | 10.1016/j.chemgeo.2017.08.005 |
文献子类 | Article |
英文摘要 | The source of metal and sulphur in porphyry and related epithermal deposits is a long debated issue. The role of mantle-derived magmas in providing the metals has proved particularly problematic. Here we report new He and Ar isotope determinations from ore fluids from the Zijinshan high sulfidation-epithermal Cu-Au deposit and Wuziqilong transitional Cu deposit from the giant Zijinshan porphyry-epithermal Cu-Au-Mo-Ag ore system (from 105 to 91 Ma), to decipher the contribution of mantle-derived volatiles and heat. Hydrothermal fluids in pyrite and digenite have He-3/He-4 up to 5.7 R-a, among the highest measured in ancient ore-forming fluids. A linear correlation between He and Ar isotopes indicate that the ore fluids were, to a first order, a mixture between a shallow crustal fluid, with low He-3/He-4, and a dominantly mantle-derived fluid with high He-3/He-4. The mantle He-3/He-4 is close to values typical of the upper mantle indicating the initial magmas that provided the heat for hydrothermal systems did not assimilate large volumes of continental crust. The ore-forming fluids have He-3/heat ratios that are 10 to 80 times higher than that of mid-oceanic ridge hydrothermal fluids, indicating that the metal-bearing fluids acquired heat and volatiles in a convective, rather than conducive, hydrothermal regime. It appears that mantle-derived volatiles, heat and probably metals have made a major contribution to the Cu-AuMo-Ag mineralization in the Zijinshan orefield. |
WOS关键词 | VALLEY-TYPE DISTRICT ; ORE-FORMING FLUIDS ; DE-FUCA RIDGE ; SOUTH CHINA ; NOBLE-GAS ; GOLD DEPOSIT ; HYDROTHERMAL FLUIDS ; TECTONIC EVOLUTION ; HE-3/HEAT RATIOS ; MESOZOIC BASALTS |
WOS研究方向 | Geochemistry & Geophysics |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000428012200007 |
资助机构 | National Basic Research Programs of China(2012CB416705 ; National Basic Research Programs of China(2012CB416705 ; National Natural Science Foundation of China(41103023) ; National Natural Science Foundation of China(41103023) ; National Key Research and Development Program of China(2016YFC0600207) ; National Key Research and Development Program of China(2016YFC0600207) ; 2014CB440906) ; 2014CB440906) ; National Basic Research Programs of China(2012CB416705 ; National Basic Research Programs of China(2012CB416705 ; National Natural Science Foundation of China(41103023) ; National Natural Science Foundation of China(41103023) ; National Key Research and Development Program of China(2016YFC0600207) ; National Key Research and Development Program of China(2016YFC0600207) ; 2014CB440906) ; 2014CB440906) ; National Basic Research Programs of China(2012CB416705 ; National Basic Research Programs of China(2012CB416705 ; National Natural Science Foundation of China(41103023) ; National Natural Science Foundation of China(41103023) ; National Key Research and Development Program of China(2016YFC0600207) ; National Key Research and Development Program of China(2016YFC0600207) ; 2014CB440906) ; 2014CB440906) ; National Basic Research Programs of China(2012CB416705 ; National Basic Research Programs of China(2012CB416705 ; National Natural Science Foundation of China(41103023) ; National Natural Science Foundation of China(41103023) ; National Key Research and Development Program of China(2016YFC0600207) ; National Key Research and Development Program of China(2016YFC0600207) ; 2014CB440906) ; 2014CB440906) |
内容类型 | 期刊论文 |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/82984] |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Hu, Rui-Zhong |
作者单位 | 1.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550002, Guizhou, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Scottish Univ Environm Res Ctr, Scottish Enterprise Technol Pk,Rankine Ave, E Kilbride G75 0QF, Lanark, Scotland |
推荐引用方式 GB/T 7714 | Wu, Li-Yan,Hu, Rui-Zhong,Li, Xiao-Feng,et al. Mantle volatiles and heat contributions in high sulfidation epithermal deposit from the Zijinshan Cu-Au-Mo-Ag orefield, Fujian Province, China: Evidence from He and Ar isotopes[J]. CHEMICAL GEOLOGY,2018,480:58-65. |
APA | Wu, Li-Yan.,Hu, Rui-Zhong.,Li, Xiao-Feng.,Stuart, Finlay M..,Jiang, Guo-Hao.,...&Zhu, Jing-Jing.(2018).Mantle volatiles and heat contributions in high sulfidation epithermal deposit from the Zijinshan Cu-Au-Mo-Ag orefield, Fujian Province, China: Evidence from He and Ar isotopes.CHEMICAL GEOLOGY,480,58-65. |
MLA | Wu, Li-Yan,et al."Mantle volatiles and heat contributions in high sulfidation epithermal deposit from the Zijinshan Cu-Au-Mo-Ag orefield, Fujian Province, China: Evidence from He and Ar isotopes".CHEMICAL GEOLOGY 480(2018):58-65. |
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