| 甚低频电磁法对脉状矿床勘查评价的意义——以金、铅锌(银)和萤石矿为例 |
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| 引用本文： | 白大明,聂凤军,江思宏.甚低频电磁法对脉状矿床勘查评价的意义——以金、铅锌(银)和萤石矿为例[J].矿床地质,2002,21(4):408-413. |
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| 作者姓名： | 白大明 聂凤军 江思宏 |
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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： | 国家地质调查项目 (编号 :K1.3 .3 2 )的资助 |
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| 摘 要： | 脉状矿床是重要的矿床类型之一。其矿体往往赋存于断裂构造之中，甚低频电磁法（VLF-EM）以其成本低廉、轻便高效，以及对脉状矿（化）体特有的灵敏性而具有特色。文章通过对以脉状形式产出的金、铅锌（银）及萤石矿的VLF-EM找矿勘查实例，探讨了VLF-EM对这类矿床勘查的有效性和优越性，结果表明该方法对脉状矿床勘查评价有重要意义。
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| 关 键 词： | 固体地球物理学 甚低频电磁法 找矿方法 脉状矿床 金矿床 铅锌矿床 萤石矿床 银矿床 |
| 文章编号： | 0258-7106(2002)04-0408-06 |
Feasibility of Applying VLF-EM Methods to Exploration and Evaluation of Vein Deposits: Exemplified by Exploration of Gold, Lead-Zinc (Silver) and Fluorite Deposits |
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| Bai Daming,Nie Fengjun and Jiang Sihong.Feasibility of Applying VLF-EM Methods to Exploration and Evaluation of Vein Deposits: Exemplified by Exploration of Gold, Lead-Zinc (Silver) and Fluorite Deposits[J].Mineral Deposits,2002,21(4):408-413. |
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| Authors: | Bai Daming Nie Fengjun and Jiang Sihong |
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| Abstract: | The deposit described in this paper is one of the most important types of ore deposit. In general, the spatial distribution of the ore veins in this deposit is controlled by fracture zones. Geophysical investigation indicates that the VLF_EM methods are suitable for exploration of this type of ore deposits in that they can be used precisely, conveniently and economically during the regional evaluation of the vein ore deposits, especially in the areas covered with overburden. The principles and application procedures of the VLF_EM methods have been described in detail in this paper. Meanwhile, Cases are given concerning the successful exploration of gold_ and lead_zinc_silver_bearing veins as well as fluorite veins distributed in Inner Mongolia and Yunnan. In addition, all the geophysical anomalies delineated by the VLF_EM methods have been proved to be valuable. The exploration model derived from the VLF_EM methods is also advanced. |
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| Keywords: | solid_earth physics very low frequency electromagnetic methods (VLF_EM) vein deposits gold deposits lead_zinc (silver) deposits fluorite deposits |
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