| 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 | |
| Source Publication | Journal of Asian Earth Sciences
 |
| Volume | 74Issue:SIPages:330-342 |
| Abstract | 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. |
| Keyword | Geochronology Zircon Apatite Rutile U–pb Age Biotite Ar–ar Cooling History Porphyry Cu–mo Deposit Fujiawu Se China |
| Subject Area | 矿床地球化学 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/5007 |
| Collection | 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 |
| Recommended Citation 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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| U–Pb and Ar–Ar geoch（5532KB） | 开放获取 | License | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment