Metallogenetic epoch and mechanism of the tungsten ore in Yushan,Beishan orogenic belt,Gansu |
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Authors: | XinHu Zhang Li Su XueJun Cui ShuHong Ding JianGuo Zhang Li Chen |
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Affiliation: | (1) School of Resources and Environment, Lanzhou University, Lanzhou, 730000, China;(2) The Geological Lab Center and State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing, 100083, China;(3) Gansu Bureau of Geology and Mineral Exploration and Development, Lanzhou, 730000, China;(4) No. 4 Geological Exploration Institute, Gansu Bureau of Geology and Mineral Exploration and Development, Jiuquan, 735000, China;(5) Gansu Institute of Geological Survey, Lanzhou, 730000, China;(6) Laboratory of Electron Microscopy, School of Physics, Peking University, Beijing, 100871, China |
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Abstract: | Using SHRIMP zircon U-Pb dating methods and cathodoluminescence (CL) technique, we have precisely dated ore samples from tungsten
ore deposit, ore-bearing volcanic-sedimentary strata and granite in the Yushan region within the east Tianshan-Beishan W-bearing
zone. This study reveals Yushan tungsten ore deposit zone formed in 250 ± 9 Ma, and it is closely associated with the Permian
granites and felsic volcanic rocks. This new type of tungsten ore deposit in the east Tianshan-Beishang multiple-metallogenetic
province may probably be associated with the regionally right-literal shearing after the main Carboniferous collisional orogeny,
and the formation of pull-apart basin and the felsic magmatism.
Supported by the National Natural Science Foundation of China (Grant No. 40572045), the State Key Laboratory of Geological
Processes and Mineral Resources in China University of Geosciences (GPMR0543), and the research project ‘The study of metallization
of ore deposits in Gansu Province’ in Gansu Geology and Mineral Resources Bureau |
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Keywords: | Beishan Gansu tungsten ore deposit SHRIMP zircon U-Pb ages Permian |
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