| New Chronological Evidence for Indosinian Diagenetic Mineralization in Eastern Xinjiang, NW China |
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| 作者姓名： | LI Huaqin CHEN Fuwen LU Yuanf YANG Hongmei GUO Jing and MEI Yuping Yichang Institute of Geology and Mineral Resources Gangyao Ro Yichang Hubei |
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| 作者单位： | LI Huaqin，CHEN Fuwen，LU Yuanfa，YANG Hongmei，GUO Jing and MEI Yuping Yichang Institute of Geology and Mineral Resources，37 Gangyao Road，Yichang，Hubei 443003; |
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| 摘 要： | 1 IntroductionMineralization in E. Xinjiang constitutes an importantpart of the Mid-Asian Metallogenetic Province. A greatdeal of nonferrous, ferrous, rare and noble metaldeposits of different genetic types and ages were formedduring different crustal evolution stages and werecontrolled by regional tectonic evolution. Large-scalemineralization of metallic deposits and relatedmagmatism mainly occurred during the Carboniferous toPermian periods (Li et al., 1998; Ji et al., 1999; Mao etal., 2…
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| 关 键 词： | 地质年代学证据 新疆自治区 成岩矿化 典型沉积矿 |
New Chronological Evidence for Indosinian Diagenetic Mineralization in Eastern Xinjiang, NW China |
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| Authors: | LI Huaqin CHEN Fuwen LU Yuanf YANG Hongmei GUO Jing and MEI Yuping Yichang Institute of Geology and Mineral Resources Gangyao Roa Yichang Hubei |
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| Abstract: | Abstract There have been conflicting ideas about the Indosinian mineralization in E. Xinjiang, a subject that has attracted many geologists' attention over a long period. Isotopic dating shows that the Shiyingtan gold deposit located on the southern margin of the Turpan‐Hami basin has a quartz fluid inclusion Rb‐Sr isochron age of 237±9 Ma (95% conf.); the Shuangfengshan gold deposit on the southern margin of the Junggar orogenic belt has a quartz fluid inclusion Rb‐Sr isochron age of 226±21 Ma (95% conf.); the Weiya vanadium‐titanium magnetite in the E. Tianshan mountains has a mineral‐whole rock Sm‐Nd isochron age of 220 ±30 Ma (95% conf.); the Jinwozi and Jinwozi 210 gold deposits in the E. Tianshan mountains have quartz fluid inclusion Rb‐Sr isochron ages of 228±22 Ma (95% conf.) and 230±6 Ma (95% conf.), respectively; and the Xiaobaishitouquan scheelite deposit in the E. Tianshan mountains has a quartz fluid inclusion Rb‐Sr isochron age of 248±7 Ma (95% conf.). The metallogenetic ages mentioned above prove the existence of Indosinian mineralization in E. Xinjiang, and the metallogenetic event might have been related to Triassic intraplate magmatic evolution, intra‐continent subduction, strike‐slip shoving and ductile shearing in the studied area, representing another mineralization peak after the Late Paleozoic. |
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| Keywords: | Indosinian mineralization representative deposits chronology E Xinjiang |
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