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| 西秦岭北部蛇绿混杂岩带成矿作用与区域构造演化的关系 | |
| 引用本文： | 李锁成,陈永彬,赵彦庆,崔 峤.西秦岭北部蛇绿混杂岩带成矿作用与区域构造演化的关系[J].矿床地质,2005,24(6):656-662. |
| 作者姓名： | 李锁成 陈永彬 赵彦庆 崔 峤 |
| 作者单位： | 1. 中国地质大学,湖北,武汉,430074;甘肃省地质矿产勘查开发局,甘肃,兰州,730000 2. 甘肃省地质调查院,甘肃,兰州,730000 3. 甘肃省地质矿产勘查开发局,甘肃,兰州,730000 |
| 基金项目： | 本文得到中国地质调查局国土资源大调查项目（1212010531903）的资助. |
| 摘 要： | 文章依据西秦岭北部区域构造演化过程、蛇绿混杂岩带成矿作用及其主要矿床类型特征，认为西秦岭北部矿床的形成表现出多种成矿作用的复合、叠加和改造特征，不同类型矿床的形成均受到地质作用类型、物质来源和构造环境的严格控制。客观地总结了西秦岭北部蛇绿混杂岩带的成矿规律：不同矿种、不同类型和不同时期的矿床集中分布，空间相伴，大致可分为关子铁、硫矿集区，李子园金铜、银铅矿集区和太阳寺金、金银铅矿集区。早古生代在商丹洋壳俯冲作用下，主要形成海相火山-沉积铁、硫矿床；加里东期俯冲-碰撞造山作用下，主要形成热液充填-交代型银铅矿床、变质岩改造型矿床；印支期在构造-岩浆作用下，主要形成石英脉型金（铜）矿床、斑岩型钼（铜、铋）矿床、构造蚀变岩型金矿床。海相火山-沉积作用、区域变质作用、岩浆及其岩浆热液作用对成矿有较大影响，主要成矿作用与区域构造演化过程中的主要地质事件在时间和空间上相对应。 |
| 关 键 词： | 地质学 构造演化 成矿作用 蛇绿混杂岩带 西秦岭 |
| 文章编号： | 0258-7106（2005）06-0656-07 |
| 收稿时间： | 2005-03-23 |
| 修稿时间： | 2005-03-232005-10-20 |
Relationship between ore_forming process and regional tectonic evolution of ophiolitic mixtite belt in northern West Qinling region |
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| LI Suo-cheng,CHEN Yong-bin,ZHAO Yan-qing,CUI Qiao.Relationship between ore_forming process and regional tectonic evolution of ophiolitic mixtite belt in northern West Qinling region[J].Mineral Deposits,2005,24(6):656-662. | |
| Authors: | LI Suo-cheng CHEN Yong-bin ZHAO Yan-qing CUI Qiao |
| Institution: | 1 China University of Geosciences, Wuhan 430074, Hubei, China; 2 Gansu Bureau of Geology and Mineral Resource Exploration and Development, Lanzhou 730000, Gansu, China; 3 Geological Survey of Gansu Province, Lanzhou 730000, Gansu, China |
| Abstract: | According to the tectonic evolution and the geological features of ore deposits in West Qinling region, it has been concluded that these deposits with various ores, different types and different epochs are generally characterized by concentrated spatial distribution and associated occurrence. Of the three metallogenic epochs, the Indo- Chinese epoch is the most intense one, characterized by inheritance, multiple epochs and sources, and complex reformation. The marine volcanic-sedimentation, regional metamorphism, magmatism and magmatic hydrothermalism played significant roles in ore-forming processes, and the predominant ore-forming processes and the major geological events during the regional tectonic evolution are homologous in time and space. |
| Keywords: | geology tectonic revolution ore-forming process ophiolitic mixtite belt West Qinling region |
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