Zircon U-Pb-Hf-O and molybdenite Re-Os isotopic constraints on porphyry gold mineralization in the Bilihe deposit, NE China

doi:10.1016/j.jseaes.2018.07.016

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	Zircon U-Pb-Hf-O and molybdenite Re-Os isotopic constraints on porphyry gold mineralization in the Bilihe deposit, NE China
	Zhu, Mingtian 1,2,3,4,5; Huang, Ke 1,2,3; Hu, Lei 6; Bai, Yang 1,2,3; Li, Wenjun 1,2; Gao, Bingyu 1,2; Zhang, Lianchang 1,2,3
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2018-10-01
卷号	165 页码:371-382
关键词	Geochronology Hf-O isotopes Bilihe deposit Porphyry gold deposit CAMD
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2018.07.016
英文摘要	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.
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]
WOS关键词	ASIAN OROGENIC BELT ; INNER-MONGOLIA ; NORTHERN CHILE ; MARICUNGA BELT ; AU DEPOSIT ; WORKING REFERENCE ; INTRUSIVE ROCKS ; CU-AU ; GEOCHRONOLOGY ; AGE
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000449447300022
资助机构	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
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/89430]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
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
推荐引用方式 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.