http://www.sciencedirect.com/science/article/pii/S1674987114000711 |
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| Authors: | Ping Shen Hongdi Pan Yuanchao Shen Yuhong Yan Shihua Zhong |
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| Institution: | 1. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
2. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;College of Earth Sciences, Chang'an University, Xi'an 710054, China |
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| Abstract: | The West Junggar region,located in the loci of the Central Asian Orogenic Belt,is a highly endowed metallogenic province with 100 tonnes Au,0.7 Mt Cu,0.3 Mt Mo,and 2.3 Mt chromite as well as significant amounts of Be and U.The West Junggar region has three metallogenic belts distributed systematically from north to south:(1) late Paleozoic Saur Au-Cu belt;(2) early Paleozoic XiemisitaiSharburt Be-U-Cu-Zn belt;(3) late Paleozoic Barluk-Kelamay Au-Cu-Mo-Cr belt.These belts host a number of deposits belonging to at least eight economically important styles,including epithermal Au,granite-related Be-U,volcanogenic massive sulfide(VMS) Cu-Zn,podiform chromite,porphyry Cu,hydrothermal quartz vein Au,porphyry-greisen Mo(-W),and orogenic Au.These deposit styles are associated with the tectonics prevalent during their formation.Five tectonic-mineralized epochs can be recognized:(1) Ordovician subduction-related VMS Cu-Zn deposit;(2) Devonian ophiolite-related podiform chromite deposit;(3) early Carboniferous subduction-related epithermal Au and porphyry Cu deposits;(4) late Carboniferous subduction-related granite-related Be-U,porphyry Cu,and hydrothermal quartz vein Au deposits;and(5) late Carboniferous to early Permian subduction-related porphyry-greisen Mo(-W) and orogenic Au deposits. |
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| Keywords: | Mineral deposit styles Metallogenic belts Tectonic-mineralized epoch West Junggar Xinjiang |
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