| 内蒙古中西部浅变质岩为容矿围岩的金矿床地质特征及形成过程 |
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| 引用本文： | 聂凤军,江思宏,侯万荣,刘翼飞,肖 伟.内蒙古中西部浅变质岩为容矿围岩的金矿床地质特征及形成过程[J].矿床地质,2010,29(1):58-70. |
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| 作者姓名： | 聂凤军 江思宏 侯万荣 刘翼飞 肖 伟 |
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| 作者单位： | 中国地质科学院矿产资源研究所,北京,100037 |
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| 基金项目： | 国家科技支撑项目(2007BAB25B02)的资助 |
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| 摘 要： | 从地质-构造单元上看,内蒙古中西部位于华北陆台北缘西段,区内浅变质岩为容矿围岩的金矿床(点)星罗棋布,并且具有重要的经济价值,代表性矿床有常山壕(特大型)、朱拉扎嘎(大型)和赛音乌苏(中型)金矿床。金矿化大都在白云鄂博和渣尔泰裂谷带中元古界砂岩、粉砂岩、碳质板岩、千枚岩和片岩中呈层状、似层状和网脉状产出,并且与古生代侵入岩脉群具有密切的空间分布关系。研究结果表明,尽管上述3处金矿床所处的地理位置不同,但是它们的产出环境、地质特征和形成机理大体相似,并且可与乌兹别克斯坦穆龙套超大型金矿床相对比。金成矿作用发生的时间与古大陆边缘裂谷带构造-岩浆活动高峰期相吻合,其中海西期构造变形和岩浆侵位所诱发的热液活动是导致金矿床形成的主导控制因素。浅变质岩为容矿围岩的金矿床属中-低温热液金矿床,是地壳特定演化阶段的产物。
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| 关 键 词： | 地质学 金矿床 浅变质岩 地质特征 时空分布 成矿作用 内蒙古中西部 |
Geological features and genesis of gold deposits hosted by low-grade metamorph ic rocks in central-western Inner Mongolia |
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| NIE Fengjun,JIANG SiHong,HOU WanRong,LIU YiFei,XIAO Wei.Geological features and genesis of gold deposits hosted by low-grade metamorph ic rocks in central-western Inner Mongolia[J].Mineral Deposits,2010,29(1):58-70. |
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| Authors: | NIE Fengjun JIANG SiHong HOU WanRong LIU YiFei XIAO Wei |
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| Institution: | Institute of Mineral Resources/a>;Chinese Academy of Geological Sciences/a>;Beijing 100037/a>;China |
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| Abstract: | The central-western Inner Mongolia area,located in the western section of the northern margin of the North China Craton,is one of the most important gold metallogenic provinces in North China. The gold deposits and prospects hosted by low-grade metamorphic rocks are widely distributed in two parallel EW-trending Protrozoic rift belts,i.e.,the Bayan Obo belt in the north,and the Chaiertaishan belt in the south. Up till now,twenty-three ore deposits and prospects have been discovered,of which Changshanhao,Zhu... |
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| Keywords: | geology gold deposit low-grade metamorphic rocks geological feature spatial-temporal distribution ore-forming process central-western Inner Mongolia |
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