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Petrogenesis and thermal history of the Yulong porphyry copper deposit, Eastern Tibet: insights from U-Pb and U-Th/He dating, and zircon Hf isotope and trace element analysis

文献类型：期刊论文

作者Li, Jinxiang1; Qin, Kezhang2; Li, Guangming2; Cao, Mingjian2; Xiao, Bo2,3; Chen, Lei4; Zhao, Junxing2; Evans, Noreen J.5,6; McInnes, Brent I. A.5,6
刊名MINERALOGY AND PETROLOGY
出版日期2012-07-01
卷号105期号:3-4页码:201-221
ISSN号0930-0708
DOI10.1007/s00710-012-0211-0
文献子类Article
英文摘要The Yulong porphyry copper deposit (6.5 Mt at 0.46 % Cu) in eastern Tibet was formed in a post-collisional setting. New zircon U-Pb and U-Th/He ages, apatite U-Th/He ages and in-situ zircon Hf isotopic and trace element data for the Yulong ore-bearing adakitic porphyries elucidate the thermal history and petrogenesis of the deposit. Zircon U-Pb ages range from from 41.2 Ma to 40.7 Ma, indicating an Eocene formation age. Combined with the zircon U-Th/He age of 37.5 +/- 1.2 Ma, results suggest that magmatic-hydrothermal evolution lasted up to 5 m.y. The apatite U-Th/He age of 33.4 +/- 0.9 Ma reflects Yulong deposit exhumation during the similar to 33-30 Ma Tibetan uplift. Moreover, the high epsilon Hf(t)-values (7.1 similar to 12.2) zircon yield the highest I REE pound content, higher Y/Hf, lower Ce/Ce* and higher Th/U ratios compared to inherited zircon or magmatic zircon suggesting that the high epsilon Hf(t) zircon crystallized from another magma, and that magma mixing probably contributed to the adakitic porphyries at Yulong. In addition, inherited and magmatic zircon with the lowest epsilon Hf(t) values (-20.6 similar to -4.4) suggest crustal contamination. The positive zircon epsilon Hf(t) values indicate a source in the juvenile arc lower crust. Significantly, the juvenile arc lower crust inherited arc magma characteristics (abundant F, Cl, Cu and high oxidation state), which are now found in the porphyry Cu-Mo deposits.
WOS关键词ORE-BEARING PORPHYRIES ; ASIAN COLLISION ZONE ; SOUTHERN TIBET ; CU-AU ; LU-HF ; NORTHERN TIBET ; (U-TH)/HE THERMOCHRONOMETRY ; AR-40/AR-39 GEOCHRONOLOGY ; CONTINENTAL COLLISION ; FLUID INCLUSIONS
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000305889200008
出版者SPRINGER WIEN
资助机构National Natural Science Foundation(40902027 ; National Natural Science Foundation(40902027 ; 41072059 ; 41072059 ; 40772066) ; 40772066) ; National Natural Science Foundation(40902027 ; National Natural Science Foundation(40902027 ; 41072059 ; 41072059 ; 40772066) ; 40772066) ; National Natural Science Foundation(40902027 ; National Natural Science Foundation(40902027 ; 41072059 ; 41072059 ; 40772066) ; 40772066) ; National Natural Science Foundation(40902027 ; National Natural Science Foundation(40902027 ; 41072059 ; 41072059 ; 40772066) ; 40772066)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84126]  
专题中国科学院地质与地球物理研究所
通讯作者Li, Jinxiang
作者单位1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.China Nonferrous Met Min Grp Co Ltd, Beijing 100029, Peoples R China
4.Chinese Acad Geol Sci, Inst Mineral Resources, MRL Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China
5.CSIRO Earth Sci & Resource Engn, Kensington, WA 6151, Australia
6.Curtin Univ Technol, John De Laeter Ctr Isotope Res, Dept Appl Geol Appl Phys, Perth, WA 6945, Australia
推荐引用方式
GB/T 7714		 Li, Jinxiang,Qin, Kezhang,Li, Guangming,et al. Petrogenesis and thermal history of the Yulong porphyry copper deposit, Eastern Tibet: insights from U-Pb and U-Th/He dating, and zircon Hf isotope and trace element analysis[J]. MINERALOGY AND PETROLOGY,2012,105(3-4):201-221.
APA Li, Jinxiang.,Qin, Kezhang.,Li, Guangming.,Cao, Mingjian.,Xiao, Bo.,...&McInnes, Brent I. A..(2012).Petrogenesis and thermal history of the Yulong porphyry copper deposit, Eastern Tibet: insights from U-Pb and U-Th/He dating, and zircon Hf isotope and trace element analysis.MINERALOGY AND PETROLOGY,105(3-4),201-221.
MLA Li, Jinxiang,et al."Petrogenesis and thermal history of the Yulong porphyry copper deposit, Eastern Tibet: insights from U-Pb and U-Th/He dating, and zircon Hf isotope and trace element analysis".MINERALOGY AND PETROLOGY 105.3-4(2012):201-221.

入库方式： OAI收割

来源：地质与地球物理研究所

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