| 黔西北地区地球物理特征与铅锌矿控矿构造分析 |
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| 引用本文： | 王亮,张嘉玮,向坤鹏,陈囯勇,胡从亮,张琛.黔西北地区地球物理特征与铅锌矿控矿构造分析[J].现代地质,2019,33(2):325-336. |
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| 作者姓名： | 王亮 张嘉玮 向坤鹏 陈囯勇 胡从亮 张琛 |
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| 作者单位： | 1.贵州省地质调查院,贵州 贵阳 5500812.贵州省地质物探开发应用工程技术研究中心,贵州 贵阳 5500813.贵州省地质矿产勘查开发局,贵州 贵阳 5500044.贵州省有色金属和核工业地质勘查局七总队,贵州 贵阳 550005 |
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| 基金项目： | 贵州省地质矿产勘查开发局重大科研专项“黔西北地区铅锌找矿攻关”(黔地矿纪要(2015)14号);贵州省科学技术厅项目(黔科合平台人才 [2018] 5626);贵州省科学技术厅项目(黔科合[2016]平台人才5401);贵州省科学技术厅项目(黔科合平台人才[2017]5739) |
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| 摘 要： | 黔西北位于川滇黔铅锌成矿域乌蒙山重力梯级带上,地质构造异常复杂,找矿前景巨大,但研究程度低。近年来,在织金五指山、赫章猪拱塘等地取得了大型、超大型铅锌找矿历史性突破,指示区内具有形成超大型铅锌矿床的潜力。根据区域重力、航磁、地质以及1∶5万地面磁测等资料,划定了区内的深、浅部断裂构造。结果显示,铅锌矿床的分布与推测的深部及浅表断裂带具有良好的耦合关系。在威宁李子沟一带,北西向断裂F_1与北东向断裂F_2呈"十"字形分布,为两条典型的控矿构造;在以那架—小猫场地区,两条大致平行的北东向断裂(F10、F11)联合控矿。结合区域资料综合分析认为,深部断裂主要为导矿-容矿构造,是形成大型-超大型铅锌矿床的有利地段;浅表断裂则主要为容矿构造,推测的主要断裂(F_1—F16)分布区有望成为铅锌成矿的重点找矿地段。
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| 关 键 词： | 重磁场 地面磁测 深部断裂 浅表断裂 铅锌矿床 黔西北 |
| 收稿时间： | 2018-03-21 |
| 修稿时间： | 2018-11-20 |
Geophysical Characteristics and Pb-Zn Ore-controlling Structures in Northwestern Guizhou |
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| WANG Liang,ZHANG Jiawei,XIANG Kunpeng,CHEN Guoyong,HU Congliang,ZHANG Chen.Geophysical Characteristics and Pb-Zn Ore-controlling Structures in Northwestern Guizhou[J].Geoscience——Journal of Graduate School,China University of Geosciences,2019,33(2):325-336. |
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| Authors: | WANG Liang ZHANG Jiawei XIANG Kunpeng CHEN Guoyong HU Congliang ZHANG Chen |
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| Institution: | 1. Guizhou Institute of Geological Survey,Guiyang,Guizhou 550081,China2. Guizhou Engineering Research Center for Geologic-Geophysical Exploration Development and Application,Guiyang,Guizhou 550081,China3. Bureau of Geology and Mineral Exploration and Development of Guizhou Province,Guiyang,Guizhou 550004,China4. Seventh General Team of Guizhou Nonferrous Metals and Nuclear Industry Geological Exploration Bureau,Guiyang,Guizhou 550005,China |
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| Abstract: | Northwestern Guizhou is located in the Wumengshan gravity gradient belt of Sichuan-Guizhou-Yunnan Pb-Zn metallogenic domain. The domain is characterized by complex geological structure and geophysical anomalies, with low degree of research and substantial exploration potential. In recent years, the discovery of the large and super-large Pb-Zn deposits at Wuzhishan and Zhugongtang indicates huge potential of super-large Pb-Zn discovery in this region. Based on surficial geological survey, and regional gravity, aeromagnetic and 1:50k ground magnetic survey, major shallow and deep faults were delineated in this study. The results show the coupling relationship between the Pb-Zn deposits and the inferred deep and shallow faults. The typical ore-controlling fault F1 cut fault F2(in Lizigou, Weining, NW Guizhou) are NW- and NE-trending, respectively. In Yinajia-Xiaomaochang area, the two roughly parallel NE-trending faults (F10, F11) are both ore-controlling. Comprehensive analysis of regional geological data shows out that the deep and shallow faults are the main ore-forming/-hosting and ore-hosting structures, respectively, and the former are permissive to the formation of large to super large Pb-Zn deposits. It is speculated that the area around the major faults (F1-F16) can be a high potential area for Pb-Zn prospecting. |
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| Keywords: | gravity and magnetic field ground magnetic survey deep fault shallow fault Pb-Zn deposit northwestern Guizhou |
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