时域激电法在探索深部斑岩型钼矿中的应用  

Application of time domain IP measurement in the exploration of deep porphyry molybdenum deposit

作　　者：赵振华[1] 曲为贵 刘钧沅 刘仕刚[1] 孔祥栋[1] 刘建权[1] 李磊 ZHAO Zhen-hua;QU Wei-gui;LIU Jun-yuan;LIU Shi-gang;KONG Xiang-dong;LIU Jian-quan;LI Lei(Tianjin North China Geological Exploration General Institute,Tianjin 300170,China;Tianjin center,China Geological Survey Tianjin 300170,China)

机构地区：[1]天津华北地质勘查总院,天津300170 [2]中国地质调查局天津地质调查中心,天津300170

出　　处：《华北地质》2021年第1期70-74,80,共6页North China Geology

基　　金：河北省地质勘查基金项目“河北省丰宁满族自治县杨树沟钼多金属矿普查(冀国土资勘字[2015]034号)”。

摘　　要：河北省丰宁县某钼多金属矿普查工作中,确立了本区近地表以含钼石英细脉为主的矿化类型,认为在近地表含钼石英细脉广泛发育的表征下,具备形成斑岩型矿床的条件。为探索深部斑岩型钼矿床存在的可能性,施测地质物探综合长剖面P1,大致查明了全区深部极化体的分布特征及深部电性结构,为深部验证提供了有利依据。综合以往地质、物探、化探等各项成果,参考典型斑岩型钼矿成矿模式,优选斑岩型钼矿成矿最佳部位,利用时域极电法探索了深部斑岩型矿床存在的可能性,施工深钻孔进行验证,最终发现了多条平行钼矿脉。During the exploration of a molybdenum polymetallic deposit,located in Fengning County,Hebei Province,the mineralization type of molybdenum-containing quartz veins in the near-surface was established.The extensive development of molybdenum-containing quartz veins near the surface indicates the metallogenic potential of porphyry deposits.In order to investigate the possibility of deep porphyry molybdenum deposit,the long comprehensive profile P1 of geophysical and geophysical surveys was carried out.The distribution characteristics of deep polarizers and deep electrical structures were roughly identified,which provided a favorable basis for deep verification.Based on the analysis of these previous geological,geophysical and geochemical exploration results,combined with the typical porphyry molybdenum ore-forming model,the best ore-forming position is inferred and selected for deep drilling verification and several parallel molybdenum veins were eventually disclosed.The time domain IP measurements have played a key role in this exploration.

关 键 词：时域激电法 激电测深 长剖面 斑岩型钼矿 深部矿产 

分 类 号：P631.3[天文地球—地质矿产勘探] P618.65[天文地球—地质学]