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Petrogenesis and metallogenic implications of the Miocene granite porphyry in the Jiama Cu-polymetallic deposit, Gangdese belt, South Tibet

文献类型：期刊论文

作者Zhang, Lipeng1,2,3; Hu, Yongbin4; Wang, Kun1,2,3; Deng, Jianghong1,2,3; Sui, Qinglin1,2,3; Wang, Jinrong5
刊名JOURNAL OF GEOCHEMICAL EXPLORATION
出版日期2022-06-01
卷号237页码:16
关键词Jiama Granite porphyry Porphyry Cu deposit Oxygen fugacity Gangdese
ISSN号0375-6742
DOI10.1016/j.gexplo.2022.106998
通讯作者Zhang, Lipeng(zhanglipeng@qdio.ac.cn) ; Hu, Yongbin(huyongbin85@foxmail.com)
英文摘要Geochronology, geochemical and isotopic studies were carried out on granite porphyry from the Jiama Cupolymetallic deposit, Gangdese porphyry copper deposit belt, to constrain the genesis and metallogenic potential. LA-ICP-MS zircon U-Pb dating indicates that the granite porphyry was emplaced at 14.9 +/- 0.3 Ma to 16.0 +/- 0.3 Ma, which is consistent with other felsic porphyries in the deposit. The granite porphyry shows high-K calcalkaline and peraluminous signatures. In addition, the granite porphyry shows enrichment in large ion lithophile elements and depletion in high field strength elements. However, it has low Sr (76.13-401.90 ppm) contents, which is different from other felsic porphyries with high Sr contents in the deposit. The initial 87Sr/86Sr (0.7055 to 0.7070) and epsilon Nd(t) (-0.53 to -2.37) values of the granite porphyry are close to those of other felsic porphyries in this deposit. The granite porphyry and diorite porphyry have almost identical zircon delta 18O (5.71-5.82 parts per thousand) and epsilon Hf(t) (4.1-3.97) values. These results suggest that all the felsic porphyries in the Jiama deposit were derived from the same source. Geochemical characteristics show that the magma of the granite porphyry experienced fractional crystallization of hornblende and plagioclase, whereas other felsic porphyries experienced hornblendedominated fractional crystallization. Zircon Ce4+/Ce3+ values indicate the high oxygen fugacity of granite porphyries, which is key for Cu-Mo mineralization.
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22050103] ; National Natural Science Foundation of China[41803032] ; Taishan Scholar Program of Shandong[ts201712075] ; AoShan Talents Cultivation Program ; Qingdao National Laboratory for Marine Science and Technology[2017ASTCP-OS07]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000794918500001
出版者ELSEVIER
源URL[http://ir.qdio.ac.cn/handle/337002/179263]  
专题海洋研究所_深海极端环境与生命过程研究中心
通讯作者Zhang, Lipeng; Hu, Yongbin
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Pilot Qingdao Natl Lab Marine Sci & Technol Qingda, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China
5.China Met Geol Bur, Second Geol Inst, Fuzhou 350108, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Lipeng,Hu, Yongbin,Wang, Kun,et al. Petrogenesis and metallogenic implications of the Miocene granite porphyry in the Jiama Cu-polymetallic deposit, Gangdese belt, South Tibet[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2022,237:16.
APA Zhang, Lipeng,Hu, Yongbin,Wang, Kun,Deng, Jianghong,Sui, Qinglin,&Wang, Jinrong.(2022).Petrogenesis and metallogenic implications of the Miocene granite porphyry in the Jiama Cu-polymetallic deposit, Gangdese belt, South Tibet.JOURNAL OF GEOCHEMICAL EXPLORATION,237,16.
MLA Zhang, Lipeng,et al."Petrogenesis and metallogenic implications of the Miocene granite porphyry in the Jiama Cu-polymetallic deposit, Gangdese belt, South Tibet".JOURNAL OF GEOCHEMICAL EXPLORATION 237(2022):16.

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来源：海洋研究所

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