| 华北克拉通绿岩带型金成矿系统初析 |
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| 引用本文： | 翟裕生,苗来成,等.华北克拉通绿岩带型金成矿系统初析[J].地球科学,2002,27(5):522-531. |
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| 作者姓名： | 翟裕生 苗来成 |
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| 作者单位： | [1]中国地质大学地球科学与资源研究所，北京100083 [2]中国科学院地质与地球物理研究所，北京100029 |
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| 基金项目： | 国土资源部地质调查项目 (No .K1.4 - 1- 5)，中国地质调查局项目 (No .2 0 0 110 2 0 0 0 6 9)，国土资源部科技项目 (No.2 0 0 10 30 2 ) |
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| 摘 要： | 华北克拉通中绿岩带型金矿床是我国重要的矿床类型之一，也是我国黄金产量和储量的主要来源。从构造动力体制来看，华北克拉通在漫长的演化历史中曾经达过中晚元古代的离散型陆缘，早古生代到晚古生代的汇聚型陆缘和显生宙中生代克拉通活化多个构造阶段。金矿床主要形成于克拉通活化阶段，其总的构造背景可概括为由挤压，碰撞作用晚期或期后向伸展构造的转变时期。金成矿具有明显的区域地球化学背景。虽然华北克拉通绿岩带型金矿床形成时代不尽相同，但具有相似的地质地球化学特征，并与显生宙花岗岩类侵入体具晚于花岗岩，指示金矿化是构造－花岗岩浆演化晚期的产物。因此，这些金矿床基本上可归为一个成矿系统，即绿岩带中与花岗质岩浆作用于有关的热液成矿系统。
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| 关 键 词： | 华北克拉通 绿岩带 金矿床 成矿系统 构造动力体制 岩浆作用 花岗岩 |
| 文章编号： | 1000-2383(2002)05-0522-10 |
Preliminary Discussion on Gold Ore-Forming System in Greenstone Belt-Type of North China Craton |
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| ZHAI Yu sheng ,MIAO Lai cheng ,XIANG Yun chuan ,DENG Jun ,WANG Jian ping.Preliminary Discussion on Gold Ore-Forming System in Greenstone Belt-Type of North China Craton[J].Earth Science-Journal of China University of Geosciences,2002,27(5):522-531. |
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| Authors: | ZHAI Yu sheng MIAO Lai cheng XIANG Yun chuan DENG Jun WANG Jian ping |
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| Institution: | ZHAI Yu sheng 1,MIAO Lai cheng 2,XIANG Yun chuan 1,DENG Jun 1,WANG Jian ping 1 |
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| Abstract: | The greenstone belt type gold deposit in the North China craton (NCC), one of the most important deposit types in China, is the major source of gold productions and reserves. In terms of geodynamics, the NCC has experienced several tectonic stages ranging from the Middle and Upper Proterozoic divergent epicontinents, the Lower to Upper Paleozoic convergent epicontinents, to the Phanerozoic Mesozoic craton activation. This type of gold deposit, formed mainly in the craton activation stage, occurred in the transitional period from a compressive regime of late or post collision to an extension one. Gold mineralization occurred in a favorable regional geochemical setting (fairly high abundance of gold). Although these deposits were formed in different Phanerozoic periods, with the majority of these deposits in the Late Yanshanian, they share similar geological and geochemical features, and are spatially, temporally and genetically related to Phanerozoic granitic intrusions. Geochronological data suggest that gold mineralization is coeval with, or slightly postdates, the emplacement of the associated granites, probably indicating that gold mineralization is likely a product of the late stage of tectono magmatism. Therefore, the major gold deposits in the NCC can be considered as a single metallogenic system, i.e., hydrothermal metallogenic system related to granitic magmatism in greenstone belts. |
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| Keywords: | North China craton greenstone belt gold deposit metallogenic system |
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