西藏青草山斑岩铜金矿床含矿斑岩锆石U-Pb年代学及岩石成因

郑海涛; 郑有业; 徐净; 吴松; 郭建慈; 高顺宝; 次琼

doi:10.3799/dqkx.2018.111

Volume 43 Issue 8

Aug. 2018

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Article Navigation > Earth Science > 2018 > 43(8): 2858-2874

Zheng Haitao, Zheng Youye, Xu Jing, Wu Song, Guo Jianci, Gao Shunbao, Ci Qiong, 2018. Zircon U-Pb Ages and Petrogenesis of Ore-Bearing Porphyry for Qingcaoshan Porphyry Cu-Au Deposit, Tibet. Earth Science, 43(8): 2858-2874. doi: 10.3799/dqkx.2018.111

Citation:

Zheng Haitao, Zheng Youye, Xu Jing, Wu Song, Guo Jianci, Gao Shunbao, Ci Qiong, 2018. Zircon U-Pb Ages and Petrogenesis of Ore-Bearing Porphyry for Qingcaoshan Porphyry Cu-Au Deposit, Tibet. Earth Science, 43(8): 2858-2874. doi: 10.3799/dqkx.2018.111

Citation:

Zheng Haitao, Zheng Youye, Xu Jing, Wu Song, Guo Jianci, Gao Shunbao, Ci Qiong, 2018. Zircon U-Pb Ages and Petrogenesis of Ore-Bearing Porphyry for Qingcaoshan Porphyry Cu-Au Deposit, Tibet. Earth Science, 43(8): 2858-2874. doi: 10.3799/dqkx.2018.111

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Zircon U-Pb Ages and Petrogenesis of Ore-Bearing Porphyry for Qingcaoshan Porphyry Cu-Au Deposit, Tibet

doi: 10.3799/dqkx.2018.111

Zheng Haitao^{1,2
,},
Zheng Youye^{1
,
,},
Xu Jing¹,
Wu Song³,
Guo Jianci⁴,
Gao Shunbao²,
Ci Qiong⁴

1.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
2.
Geological Survey Institute, China University of Geosciences, Wuhan 430074, China
3.
School of Earth Science and Resources, China University of Geosciences, Beijing 100083, China
4.
Tibet Autonomous Region Geological and Mineral Exploration and Development Bureau, Lhasa 850000, China

Received Date: 2018-05-24
Publish Date: 2018-08-15

Abstract

Abstract

The Qingcaoshan porphyry Cu-Au deposit, located in the northern Bangong Co-Nujiang belt, is a newly discovered porphyry deposit with huge potential.However, the age, origin and source area of the ore-bearing porphyry have not been effectively constrained.In this paper, we present the zircon geochronology, Hf isotope, and geochemistry of Qingcaoshan granodiorite and granodiorite porphyry.The analysis results show that the ages of granodiorite porphyry and granodiorite are 117.9±0.8 Ma and 131.2±0.3 Ma, respectively, which represent porphyry mineralization of Bangong Co-Nujiang metallogenic belt.They also exhibit relatively uniform in-situ zircon Hf isotopic compositions.In conclusion, Qingcaoshan ore-bearing porphyries were derived from the partial melting of mafic lower crust, which were induced by the subduction of the Bangong Co-Nujiang ocean crust, and they were also mixed by a small amount of enriched lithospheric mantle.
- petrogenesis,
- zircon U-Pb age,
- porphyry Cu-Au deposit,
- Qingcaoshan,
- Bangong Co-Nujiang metallogenic belt,
- Tibet,
- geochemistry,
- geochronology

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References(71)

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Zircon U-Pb Ages and Petrogenesis of Ore-Bearing Porphyry for Qingcaoshan Porphyry Cu-Au Deposit, Tibet

doi: 10.3799/dqkx.2018.111

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