| 银昆构造成矿带 |
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| 引用本文： | 魏洲龄.银昆构造成矿带[J].地球科学与环境学报,1996(2). |
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| 作者姓名： | 魏洲龄 |
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| 作者单位： | 中国科学院长沙大地构造研究所 |
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| 基金项目： | 中国科学院“八五”重点项目，“历史因果论大地构造学的建立及其应用”项目 |
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| 摘 要： | 银昆构造成矿带是亚洲巨型ＳＮ向构造成矿带───东亚一中亚壳体过渡区构造成矿带的重要组成部分。其主要特点是；①含矿的普遍性，②成矿物质的多元性；③成矿作用的多期性，④大型、超大型矿床的广泛性；⑤矿床的多因复成性。构成上述特点的原因有：①地处东部幔隆区与西部幔坳区和东部薄地壳与酉部厚地壳的过渡带，②属东部ＮＥ构造系与西部ＮＷ构造系的汇聚区；③其间还发育有多条切割不同属性构造层的壳断裂和岩石圈断裂。该带中新生代时期地幔和壳层的构造分异而导致的构造岩浆活化，造就了银昆构造成矿带。
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| 关 键 词： | 构造成矿带 多期性 复成性 |
YINCHUAN-KUNMING TECTONIC METALLOGENIC BELT |
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| Wei Zhouling.YINCHUAN-KUNMING TECTONIC METALLOGENIC BELT[J].Journal of Earth Sciences and Environment,1996(2). |
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| Authors: | Wei Zhouling |
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| Abstract: | Yinchuan-Kunming tectonic metallogenic belt is a huge one in Asia trending from the south to north,and it is the cardinal part of the transition span between East Asia crustobody and Central Asia crustobody.Its main characteristics are: (1) prevalent ore bearing ;(2) multiple ore-forming substances ; (3) multipleepoches of mineralization; (4) large and superlarge mineral deposits commonly distributed ; (5) the quality ofpolygerietic compound formation of ore-bodies. All these are due to its special geological environment, thatis, (1)the crust transition span in thickness between the eastern region of mantle uprising and the westernregion of mantle depressing ; (2) the mingling area of the eastern tectonic system trending northeast and thewestern tectonic system trending northwest ; (3) several crust faults and lithosphere faults cutting throughvarious structural layers. The belt is the result of tectono-magmatic activation triggered by the tectonic separating of the crust and mantle during the middle Cenozoic Era. |
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| Keywords: | Tectonic metallogenic belt multiple epoches compound formation |
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