| 广西乐业林旺金矿床构造解析及构造成矿作用 |
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| 引用本文： | 陈懋弘,黄庆文,李继贤,蒋柏昌,张长明.广西乐业林旺金矿床构造解析及构造成矿作用[J].大地构造与成矿学,2010,34(3). |
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| 作者姓名： | 陈懋弘 黄庆文 李继贤 蒋柏昌 张长明 |
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| 作者单位： | 中国地质大学(北京)地球科学与资源学院,北京,100083;中国地质科学院,矿产资源研究所,北京,100037;中国地质大学(北京)地球科学与资源学院,北京,100083;广西271地质队,广西,桂林,541100;广西区域地质调查研究院,广西,桂林,541003;山东金软科技有限公司,山东,招远,265400 |
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| 基金项目： | 由"国土资源部公益性行业科研专项经费项目"，"中国博士后科学基金"，"国家重点基础研究发展计划 (973 计划)" |
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| 摘 要： | 详细的构造解析表明,矿床构造线主要分为南北向、北东东向和北西向三组,其中造山期间形成的南北向构造线(不对称褶皱和逆冲断层)控制了矿床的基本构造格架。后碰撞造山侧向挤压期间构造应力场发生近直交的改变,一方面使造山期形成的褶皱发生重褶,形成走向北东东的叠加褶皱;另一方面导致F1的左旋-正滑运动,矿液沿着断层拉张的空间沉淀就位。矿床构造演化至少经历了同生期裂陷、造山期挤压和后碰撞造山侧向挤压等三个阶段,成矿发生在后碰撞造山侧向挤压阶段。层状矿体主要赋存于背斜构造中,在空间上与赋存于断层中的脉状矿体相连。能干性和渗透性明显不同的地层组合是形成层状矿体的岩性基础,断裂构造则是主要控制因素。泥质不透水层分别与反冲断层、背斜构造组成的构造圈闭,以及两期非共轴背斜叠加形成的构造高点则是形成厚大矿体的主要原因。林旺金矿在烂泥沟金矿与水银洞金矿之间形成了一个从脉状型式→脉状和层状之复合型式→层状型式的完整矿床型式系列。这种复合矿床型式直观地表明了层状矿体是后生热液成因矿床。
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| 关 键 词： | 层状矿体 构造圈闭 构造成矿 卡林型金矿 广西林旺金矿 |
Structure Analysis and Structural Metallogenesis of the Linwang Gold Deposit, Leye,Guangxi, China |
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| CHEN Maohong,HUANG Qingwen,LI Jixian,JIANG Baichang,ZHANG Changming.Structure Analysis and Structural Metallogenesis of the Linwang Gold Deposit, Leye,Guangxi, China[J].Geotectonica et Metallogenia,2010,34(3). |
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| Authors: | CHEN Maohong HUANG Qingwen LI Jixian JIANG Baichang ZHANG Changming |
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| Institution: | CHEN Maohong1,2,HUANG Qingwen1,LI Jixian3,JIANG Baichang4 and ZHANG Changming5(1.School of the Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China,2.Institute of Mineral Resources,Chinese Academy of Geological Science,Beijing 100037,3.No.271 Geology Party of Guangxi,Guilin 541100,Guangxi,4.Institute o f Regional Geological Survey of Guangxi,Guilin 541003,5.Jinruan Science and Technology Ltd.,Zhaoyuan 265400,Shandong,China) |
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| Abstract: | The Linwang gold deposit,which is located in Leye county of Guangxi Zhuang Autonomous Region,is one of newly discovered middle-scale Carlin-type gold deposits in Yunnan-Guizhou-Guangxi triangle area in southwestern China.It consists of stratabound and fault-controlled orebodies.Detailed structural analysis shows that the structural lines of the deposit can be classified into three groups,i.e.,north-south trend,northeast trend and northwest trend,among which,north-south trend structural line(asymmetric folds... |
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| Keywords: | stratiform orebodies structural trap structural metallogenesis Carlin-type deposits Linwang gold deposit Guangxi |
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