U-Pb and Ar-Ar geochronology of the Fujiawu porphyry Cu-Mo deposit, Dexing district, Southeast China: Implications for magmatism, hydrothermal alteration, and mineralization

	U-Pb and Ar-Ar geochronology of the Fujiawu porphyry Cu-Mo deposit, Dexing district, Southeast China: Implications for magmatism, hydrothermal alteration, and mineralization
	Li Xiaofeng; Hu Ruizhong; Rusk Brian; Xiao Rong; Wang Cuiyun; Yang Feng
	2013
发表期刊	Journal of Asian Earth Sciences
卷号	74 期号:SI 页码:330-342
摘要	The Fujiawu porphyry Cu-Mo deposit is one of several porphyry Cu-Mo deposits in the Dexing district, Jiangxi Province, Southeast China. New zircon SHRIMP U-Pb data yield a weighted mean Pb-206/U-238 age of 172.0 +/- 2.1 and 168.5 +/- 1.4 Ma from weakly altered granodiorite porphyry and quartz diorite porphyry, respectively. Two hydrothermal biotites from granodiorite porphyry give an Ar-Ar step-heating plateau age of 169.9 +/- 1.8 and 168.7 +/- 1.8 Ma. Hydrothermal apatite exsolved from altered biotite yields an isotope dilution thermal ionization mass spectrometry isochron age of 164.4 +/- 0.9 Ma. The apatite age is similar to the ages obtained from hydrothermal rutile (165.0 +/- 1.1 and 164.8 +/- 1.6 Ma) and indicates that the magmatism and hydrothermal activity in the Fujiawu deposit occurred in the Middle Jurassic. Hydrothermal fluid circulation related to multiple stages of magma emplacement resulted in Cu-Mo mineralization in the Fujiawu porphyry deposit. The zircon SHRIMP U-Pb ages and the published molybdenite Re-Os age (170.9 +/- 1.5 Ma) represent the timing of magma crystallization and Mo mineralization, whereas the rutile and apatite U-Pb ages reflect the timing of Cu mineralization following quartz diorite emplacement. The data suggest slow cooling after emplacement of the quartz diorite porphyry.
关键词	Geochronology Zircon Apatite Rutile U–pb Age Biotite Ar–ar Cooling History Porphyry Cu–mo Deposit Fujiawu Se China
学科领域	矿床地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5007
专题	矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文矿床地球化学国家重点实验室
推荐引用方式 GB/T 7714	Li Xiaofeng,Hu Ruizhong,Rusk Brian,et al. U-Pb and Ar-Ar geochronology of the Fujiawu porphyry Cu-Mo deposit, Dexing district, Southeast China: Implications for magmatism, hydrothermal alteration, and mineralization[J]. Journal of Asian Earth Sciences,2013,74(SI):330-342.
APA	Li Xiaofeng,Hu Ruizhong,Rusk Brian,Xiao Rong,Wang Cuiyun,&Yang Feng.(2013).U-Pb and Ar-Ar geochronology of the Fujiawu porphyry Cu-Mo deposit, Dexing district, Southeast China: Implications for magmatism, hydrothermal alteration, and mineralization.Journal of Asian Earth Sciences,74(SI),330-342.
MLA	Li Xiaofeng,et al."U-Pb and Ar-Ar geochronology of the Fujiawu porphyry Cu-Mo deposit, Dexing district, Southeast China: Implications for magmatism, hydrothermal alteration, and mineralization".Journal of Asian Earth Sciences 74.SI(2013):330-342.

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