Diagnostic fluid inclusions of different types hydrothermal gold deposits
文献类型：期刊论文
| 作者 | Chen YanJing; Ni Pei; Fan HongRui; Pirajno F; Lai Yong; Su WenChao; Zhang Hui |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2007-09-01 |
| 卷号 | 23期号:9页码:2085-2108 |
| ISSN号 | 1000-0569 |
| 关键词 | gold ore-system fluid inclusion ore geology probe continental dynamics |
| 文献子类 | Article |
| 英文摘要 | This paper, using gold deposits as example, attempts to setup a scientific linkage between ore geology and fluid inclusions, considering that in previous published works, observations and measurements of the fluid inclusions commonly were not well interpreted. In some cases, geological data did not agree with the results obtained from fluid inclusion studies. In this paper, we first review previous classifications of gold deposits, and then, subdivide gold deposits into five classes, based on the dominant ore-forming processes: 1) intrusion -related hypothermal systems, such as porphyry-systems, breccia-pipes, IOCG and skarns; 2) orogenic-or metamorphic hydrothermal type; 3) epithermal-type, i. e. reworking hydrothermal deposits hosted in continental-facies volcanic-subvolcanic rocks; 4) fine-grain disseminated type ( Carlin-type and/or Carlin-style), i. e. reworking hydrothermal deposits hosted sediments; and 5) hydrothermal metalliferous sediments related to submarine venting, such as VMS and SEDEX styles. In this work we select diagnostic geological and fluid-inclusion characteristics of these five classes of ore-systems, and clarify their key differences that can be used as genetic markers. Ore-fluids are classified into three end-members, namely reworking, metamorphic and magmatic fluids. Many ore-systems are known to form as a result of multiple fluids during multi-stage events; and their late-stage of mineralization always being caused by fluids with a high-proportion of reworking of the original ore systems or by renewed fluid flow. Therefore, the features of late-stage fluids, alteration and mineralization cannot be used to identify the origin and genetic type of an oresystem. Instead, we suggest that only the early-stage signatures can be employed to determine the origin and type of an ore-system. Reworking fluids are characterized by low-temperature ( < 300 degrees C), low-salinity and low-content of CO(2), and sourced from meteoric and/or sea water; metamorphic fluids by moderate -temperature, low-salinity and high-content of CO(2); and magmatic fluids by high-temperature, high-salinity and high-content of CO. Magmatic hydrothermal ore-systems contain multi-daughter-crystal-bearing and high-salinity, CO(2)-rich fluid inclusions; metamorphic ore-systems contain low-salinity, CO(2)-rich fluid inclusions; and the reworking hydrothermal ore-systems contain neither daughter-crystal-bearing nor CO(2)-rich/bearing fluid inclusions, but are populated by aqueous water-solution fluid inclusions. Finally, we discuss the tectonic settings of the ore-systems of the various classes. For examples, the orogenic-type formed during processes of crustal compression, orogenesis, metamorphism and uplift; submarine metalliferous sediments developed in the setting of rift basins; Paleozoic or earlier epithermal-type ore-systems can be preserved in accretionary orogens. It is suggested that the ore-systems and their fluid inclusions can be used as an ideal probe to trace geodynamic evolution of continents. |
| WOS关键词 | ORE-FORMING FLUIDS ; TIELUPING SILVER DEPOSIT ; QINLING OROGEN ; HENAN PROVINCE ; ISOTOPE GEOCHEMISTRY ; STRINGER SYSTEM ; COPPER-DEPOSIT ; VHMS DEPOSIT ; CHINA ; MINERALIZATION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000251471600009 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68323]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Chen YanJing |
| 作者单位 | 1.Chinese Acad Sci, Guangzho Inst Geochem, KLMD, Guangzhou 510640, Peoples R China 2.Peking Univ, Lab Orogen & Crust Evolut, Beijing 100871, Peoples R China 3.Nanjing Univ, Key Lab Crust Mantle Evolut & Mineralizat, Nanjing 210093, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Lithosphere Evolut, Beijing 100029, Peoples R China 5.Geol Survey Western Australia, Perth, WA 6004, Australia 6.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen YanJing,Ni Pei,Fan HongRui,et al. Diagnostic fluid inclusions of different types hydrothermal gold deposits[J]. ACTA PETROLOGICA SINICA,2007,23(9):2085-2108. |
| APA | Chen YanJing.,Ni Pei.,Fan HongRui.,Pirajno F.,Lai Yong.,...&Zhang Hui.(2007).Diagnostic fluid inclusions of different types hydrothermal gold deposits.ACTA PETROLOGICA SINICA,23(9),2085-2108. |
| MLA | Chen YanJing,et al."Diagnostic fluid inclusions of different types hydrothermal gold deposits".ACTA PETROLOGICA SINICA 23.9(2007):2085-2108. |
入库方式： OAI收割
来源：地质与地球物理研究所
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