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Zircon U-Pb-Hf-O and molybdenite Re-Os isotopic constraints on porphyry gold mineralization in the Bilihe deposit, NE China
Zhu, Mingtian1,2,3,4,5; Huang, Ke1,2,3; Hu, Lei6; Bai, Yang1,2,3; Li, Wenjun1,2; Gao, Bingyu1,2; Zhang, Lianchang1,2,3
2018-10-01
发表期刊JOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
卷号165页码:371-382
摘要The Bilihe gold deposit in Inner Mongolia is situated in the Central Asian Metallogenic Domain. Its major ore body II is a porphyry-type body, spatially and temporally associated with granodiorite porphyry and granite aplite. In this study, the timing of gold mineralization is precisely constrained by using the zircon U-Pb dating for pre-mineralization intrusions and the molybdenite Re-Os dating for later molybdenite veins. Furthermore, zircon lif-O isotope analyses have also been carried out to decipher the nature of primary magma. Zircon U-Pb dating shows that the granodiorite porphyry and the granite aplite were emplaced at 269 +/- 2 Ma and 270 +/- 2 Ma, respectively, indicating the gold mineralization occurring no earlier than 269 Ma. Meanwhile, molybdenite veins are developed within the fractures and commonly cut across the auriferous veins. Thus, combined with a molybdenite Re-Os isochron age of 268 +/- 1 Ma, the gold mineralization in the Bilihe deposit can be precisely restricted to ca. 269 Ma. Zircon epsilon(Hf) (t) values are mostly positive (1.6-11.3), along with high 5180 values of 6.20-7.63%o, suggesting a mixed source between mantle materials and ancient continental crust (such as the Bainaimiao Group) for the Bilihe magma. It is also supported by the presence of the captured detrital zircons in these intrusions. Given a universally metallogenic environment for porphyry gold deposits, a thicken crustal setting related to the collisional intermission of the Paleo-Asian Ocean is favored to interpret the formation setting of the Bilihe deposit.
关键词Geochronology Hf-O isotopes Bilihe deposit Porphyry gold deposit CAMD
DOI10.1016/j.jseaes.2018.07.016
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund
关键词[WOS]ASIAN OROGENIC BELT ; INNER-MONGOLIA ; NORTHERN CHILE ; MARICUNGA BELT ; AU DEPOSIT ; WORKING REFERENCE ; INTRUSIVE ROCKS ; CU-AU ; GEOCHRONOLOGY ; AGE
语种英语
资助项目National Natural Science Foundation of China[41390445] ; National Natural Science Foundation of China[41572073] ; National Natural Science Foundation of China[41503056] ; National Key R&D Program of China[2016YFC0600106] ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund[201501]
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund ; State Key Laboratory of Ore Deposit Geochemistry Opening Fund
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000449447300022
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89430
专题矿产资源研究院重点实验室
通讯作者Zhu, Mingtian
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Shandong Univ Sci & Technol, Inst Earth Sci & Engn, Qingdao 266510, Peoples R China
5.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Guizhou, Peoples R China
6.Shandong Inst Geophys & Geochem Explorat, Jinan 250013, Shandong, Peoples R China
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GB/T 7714
Zhu, Mingtian,Huang, Ke,Hu, Lei,et al. Zircon U-Pb-Hf-O and molybdenite Re-Os isotopic constraints on porphyry gold mineralization in the Bilihe deposit, NE China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,165:371-382.
APA Zhu, Mingtian.,Huang, Ke.,Hu, Lei.,Bai, Yang.,Li, Wenjun.,...&Zhang, Lianchang.(2018).Zircon U-Pb-Hf-O and molybdenite Re-Os isotopic constraints on porphyry gold mineralization in the Bilihe deposit, NE China.JOURNAL OF ASIAN EARTH SCIENCES,165,371-382.
MLA Zhu, Mingtian,et al."Zircon U-Pb-Hf-O and molybdenite Re-Os isotopic constraints on porphyry gold mineralization in the Bilihe deposit, NE China".JOURNAL OF ASIAN EARTH SCIENCES 165(2018):371-382.
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