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Origin of the Tudui?Shawang gold deposit, Jiaodong Peninsula, north China Craton: Constraints from fluid inclusion and H-O-He-Ar-S-Pb isotopic compositions

文献类型：期刊论文

作者Liu, Xiao-Yang3; Tan, Jun3; He, Huai-Yu1; Gan, Jin-Rong2
刊名ORE GEOLOGY REVIEWS
出版日期2021-06-01
卷号133页码:18
关键词Fluid inclusions He-Ar isotopes In-situ sulfur isotopes Gold deposit Jiaodong
ISSN号0169-1368
DOI10.1016/j.oregeorev.2021.104125
英文摘要Recent mineral exploration has identified a new gold metallogenic belt which contains reserves of >120 tonnes Au along the northeastern margin of the Jiaolai Basin, Jiaodong Province. However, the origin of these deposits remains a subject of considerable debate. This paper presents a combination of fluid inclusion and systematic H?O?He?Ar?S-Pb isotopic data of the Tudui?Shawang deposit which is characterized by sulfide-rich ores. Homogenization temperatures of fluid inclusions in the three recognized stages are 245 to 426 ?C, 210 to 410 ?C, and 160 to 270 ?C, respectively, all of which exhibit salinities lower than 15 wt% NaCl equivalent. The ?18OH2O values of quartz in ore stages 1 and 2 range from + 3.4%o to + 6.3%o and + 2.3%o to + 4.5%o, whereas the ?DSMOW from - 93%o to - 86%o and - 97%o to - 83%o, respectively. The data suggest that ore fluids are derived from magma gradually mixing with more meteoric water late. The measured 3He/4He (40Ar/36Ar) of hydrothermal fluids in pyrites are 1.53 to 3.21 Ra (732 to 1783) for stage 1, and 0.38 to 2.58 Ra (360 to 1544) for stage 2. The linear correlation between He and Ar isotopes is the result from a mixture between mantle components and crustal fluid. The estimated 3He/heat ratios range from 0.13 to 2.55 ? 10-12 cm3 STP J-1, reflecting the hydrothermal fluids are derived by convection rather than conduction. The in-situ ?34S values of three types of pyrite (Py1, Py2-1, and Py 2?2) from two stages have a narrow and similar range from + 7.1 to + 9.7%o, indicating common deep sulfur sources. Lead isotopic compositions of pyrites (206Pb/204Pb = 17.102 to 18.248; 207Pb/204Pb = 15.435 to 15.590; 208Pb/204Pb = 37.659 to 38.691) show a consistent origin as mafic dikes. Thus, we propose deep-seated, most likely mafic dike magmatic and mantle-derived sources for gold ore formation. When compared to other Jiaodong gold deposits, they exhibit similar geochemical signatures and thus consistent geodynamic setting. They are considered to associate with the subduction of the Paleo-Pacific Plate and the destruction of the North China Craton during the Early Cretaceous.
WOS关键词MANTLE-DERIVED FLUIDS ; SULU OROGENIC BELT ; POSTCOLLISIONAL MAGMATISM ; SHANDONG PENINSULA ; METAMORPHIC ROCKS ; HE-3/HEAT RATIOS ; JIAOBEI TERRANE ; EASTERN CHINA ; POPPING ROCK ; NOBLE-GASES
资助项目National Key R&D Program of China[2016YFC0600105] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[CUGCJ1708] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[CUGCJ1817]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000643947800001
出版者ELSEVIER
资助机构National Key R&D Program of China ; National Key R&D Program of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; National Key R&D Program of China ; National Key R&D Program of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; National Key R&D Program of China ; National Key R&D Program of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; National Key R&D Program of China ; National Key R&D Program of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)
源URL[http://ir.iggcas.ac.cn/handle/132A11/101161]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Tan, Jun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Univ Exeter, Camborne Sch Mines, Penryn TR10 9FE, Cornwall, England
3.China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Xiao-Yang,Tan, Jun,He, Huai-Yu,et al. Origin of the Tudui?Shawang gold deposit, Jiaodong Peninsula, north China Craton: Constraints from fluid inclusion and H-O-He-Ar-S-Pb isotopic compositions[J]. ORE GEOLOGY REVIEWS,2021,133:18.
APA Liu, Xiao-Yang,Tan, Jun,He, Huai-Yu,&Gan, Jin-Rong.(2021).Origin of the Tudui?Shawang gold deposit, Jiaodong Peninsula, north China Craton: Constraints from fluid inclusion and H-O-He-Ar-S-Pb isotopic compositions.ORE GEOLOGY REVIEWS,133,18.
MLA Liu, Xiao-Yang,et al."Origin of the Tudui?Shawang gold deposit, Jiaodong Peninsula, north China Craton: Constraints from fluid inclusion and H-O-He-Ar-S-Pb isotopic compositions".ORE GEOLOGY REVIEWS 133(2021):18.

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来源：地质与地球物理研究所

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