| 黄启霖,毛立峰,刘建中,田亚江,吕天江,宋启文,陈先童,宋顺昌.基于激电综合电性参数对贵州晴隆丁头山地区铅锌矿找矿问题探讨[J].贵州地质,2024,(4):422-436 |
| 基于激电综合电性参数对贵州晴隆丁头山地区铅锌矿找矿问题探讨 |
| Research on Prospecting of Lead-zinc Deposits in Dingtoushan Area of Qinglong, Guizhou Province Based on Integrated IP Electrical Parameters |
| 投稿时间：2024-04-15 |
| DOI： |
| 中文关键词: 综合参数 构造识别 探测深度 铅锌矿 找矿预测 |
| 英文关键词:Comprehensive parameters Structure identification Detection depth Lead and zinc ore Prospecting prediction |
| 基金项目:贵州省科技支撑计划项目《基于地球物理技术预测黔西南纳板穹隆带干热岩资源成矿远景区研究》(编号:黔科合支撑〔2023〕一般166)；黔西南州科技支撑计划项目《黔西南州干热岩资源预测与远景区研究》(编号:2022-12-29)；黔西南州科技计划项目《黔西南州卡林型金矿成矿与找矿科技创新人才团队》(编号:2023-1-12)联合资助 |
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| 中文摘要: |
| 本文提出运用物探激电的综合电性参数组合方法，实现覆盖区精细化地质填图和控矿构造有效识别，以铅锌矿成矿理论和地球物理背景为先验前提，基于电阻率、电位一阶偏导两大参数来精细识别隐伏控矿构造，基于幅频率、E及E′三大参数应用对控矿构造作用下成矿有利部位及成矿潜力进行判别，结合“地质约束+电性参数构造识别+电性参数成矿物质系统判别”建立找矿预测模式，提取了研究区主导控矿构造2条、次级含矿断裂11条，划定了4个等级的铅锌矿找矿预测区块，在研究区东南据物探异常布设实施钻孔37个，见矿孔26个，未见矿孔主要位于物探异常范围外，总体见矿率7027%，异常范围内见矿率76%。经钻探工程验证分析，物探推测结果可行、方法可靠，可用于隐伏区的地质找矿快速填图、找矿靶区快速筛选、控矿构造精细化识别等信息提取及找矿方向预测指示。 |
| 英文摘要: |
| In this paper, the comprehensive electrical parameter combination method of geophysical exploration IP is proposed to realize the fine geological mapping and effective identification of ore-controlling structure in the covered area. With the metallogenic theory of lead-zinc ore and geophysical background as the prior premise, the hidden ore-controlling structure is identified precisely based on the two parameters of resistivity and first-order bias of potential. Based on the application of the three parameters of amplitude and frequency, E and E’, the favorable ore-forming position and ore-forming potential under the ore-controlling structure are distinguished. Combined with the establishment of the prospecting prediction model of “geological constraint + structural identification of electrical parameters + systematic identification of ore-forming materials with electrical parameters”, two dominant ore-controlling structures and 11 secondary ore-bearing faults are extracted in the study area. In the southeast of the study area, 37 boreholes were arranged according to the geophysical anomaly, and 26 ore holes were found. The unfound ore holes were mainly located outside the geophysical anomaly range. The overall ore finding rate was 70.27%, and the ore finding rate was 76% within the anomaly range. Through the verification analysis of drilling engineering, the geophysical prediction results are feasible and the method is reliable, which can be used for rapid mapping of geological prospecting in hidden areas, rapid screening of prospecting targets, fine identification and extraction of ore-controlling structures, and prediction and indication of prospecting direction. |
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