激发极化法在覆盖区矿产勘查中的应用——以内蒙古昌图锡力锰银铅锌多金属矿勘查为例  

Exploration in coverage area: A case study of the Changtuxili Mn-Ag-Pb-Zn polymetallic ore deposit,Inner Mongolia

作　　者：马一行[1,2] 颜廷杰 何鹏[3] 刘祖鉴 苏航[5] 郭硕 MA Yi-Xing;YAN Ting-Jie;HE Peng;LIU Zu-Jian;SU Hang;GUO Shuo(Development and Research Center of China Geological Survey,Beijing 100037,China;Technical Guidance Center for Mineral Resources of Ministry of Natural Resources,Beijing 100083,China;Tianjin Center,China Geological Survey,Tianjin 300170,China;China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China;Qiqihar Branch,Heilongjiang Institute of Geological Survey and Research,Qiqihar,Heilongjiang 150036,China)

机构地区：[1]中国地质调查局发展研究中心,北京100037 [2]自然资源部矿产勘查技术指导中心,北京100083 [3]中国地质调查局天津地质调查中心,天津300170 [4]中国自然资源航空物探遥感中心,北京100083 [5]黑龙江省地质调查研究总院齐齐哈尔分院,黑龙江齐齐哈尔150036

出　　处：《物探与化探》2019年第4期709-717,共9页Geophysical and Geochemical Exploration

基　　金：中国地质调查局“整装勘查区找矿预测与技术应用示范”项目(DD20160050)

摘　　要：内蒙古昌图锡力锰银铅锌多金属矿最初通过1∶5万土壤测量发现,但区内覆盖较厚,地表露头识别困难。为进一步确定找矿有利部位,以1∶5万土壤测量成果为基础,通过开展1∶1万激电中梯测量及测深工作,圈定激电异常7处,分析测深剖面地下极化体规模和空间位置,有效缩小了找矿靶区范围。部分测深剖面经钻探验证发现多层矿体,证实了激发极化法在区内找矿的有效性。此外,Jd6为本次发现规模最大的激电异常,可作为下一步找矿的重点靶区。通过总结本次勘查工作,为该类覆盖区找矿提供参考。The Changtuxili Mn-Ag-Pb-Zn polymetallic ore deposit in Inner Mongolia was first discovered by 1∶50 000 soil geochemical survey;nevertheless,the area is covered with thick overburden and the recognition of surface outcrop is difficult.In order to further determine the favorable position for prospecting,the authors,based on the 1∶50 000 soil survey results,delineated seven IP anomalies by 1∶10 000 IP mid-elevator survey and bathymetry,and analyzed the scale and spatial location of buried polarizable body in sounding profile,thus effectively reducing the range of prospecting target area.Some sounding profiles were drilled to verify the discovery of multi-layered orebodies,which confirms the effectiveness of induced polarization method in prospecting in the study area.In addition,Jd6 is the largest IP anomaly found in the area,which can serve as a key target area for further prospecting.Based on summarizing the exploration work,the result provides a reference for prospecting in this kind of covered areas.

关 键 词：覆盖区 昌图锡力锰银铅锌多金属矿 激发极化法 激电异常 

分 类 号：P631[天文地球—地质矿产勘探]