航空瞬变电磁、航磁在新疆元宝山地区金铜多金属找矿中的应用  

Application of Airborne Transient Electromagnetic and Aeromagnetic Surveys to Prospecting Gold-Copper Polymetallic Deposits in the Yuanbaoshan Area of Xinjiang

作　　者：宁媛丽[1,2] 周子阳 江民忠[1,2] 骆燕 彭莉红[1,2] 朱琳 NING Yuanli;ZHOU Ziyang;JIANG Minzhong;LUO Yan;PENG Lihong;ZHU Lin(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang,Hebei 050002;Key Laboratory of Uranium Resources Geophysical Exploration Technology,China Nuclear Industry Group Company,Shijiazhuang,Hebei 050002)

机构地区：[1]核工业航测遥感中心,河北石家庄050002 [2]中核集团铀资源地球物理勘查技术中心重点实验室,河北石家庄050002

出　　处：《地质与勘探》2020年第2期403-410,共8页Geology and Exploration

基　　金：中央返还两权价款资金项目“新疆东天山阿奇山-黑尖山一带航空TEM示范测量与异常查证”(编号:T14-1-LQ29)资助。

摘　　要：新疆元宝山地区位于我国东天山觉罗塔格成矿带以金矿为优势矿种的康古尔塔格矿集区内,区内已发现康古尔、马头滩等多个金矿床(点)。近年来,这些矿床面临着资源枯竭的危机,需要寻求一种便捷快速的面积性物探找矿技术方法,为该区找矿突破提供线索。通过在该区开展1∶25000航空瞬变电磁、航磁测量工作,发现区内康古尔和马头滩金矿在航空瞬变电磁中期测道反映明显,与低阻异常具有良好的对应关系;同时,矿体多处于负磁场梯度带上,周边可见弱磁异常。以此为基础,在研究区内圈定找矿靶区6个,其中2个经验证发现矿(化)体,找矿成果显著,为在康古尔塔格矿集区内寻找同类矿床提供了方法借鉴。The Yuanbaoshan area of Xinjiang is located in the Kanggu ertage ore concentration zone dominated by gold ore,part of the Jueluotage metallogenic belt,East Tianshan.Many gold deposits(spots),such as Kanggu er and Matoutan,have been discovered in this area.Recently,these deposits are facing the problem of resource exhaustion,so convenient and rapid explorations are needed to provide clues of further prospecting in this area.To this objective,airborne transient electromagnetic and airborne magnetic surveys on scale 1∶25000 were carried out over this region.It is found that airborne transit electromagnetic signals are obvious at the known deposits in middle time channels,well corresponding to low-resistivity anomalies there.Meanwhile,orebodies are mostly located in gradient zones of the negative magnetic field,and weak magnetic anomalies are seen in the perimeter.On this basis,six new potential targets for the further exploration were identified,two of which were proved with ore(mineralization)bodies found,indicating a good application effect.This study provides a reference in methodology for exploring similar polymetallic deposits in the Kanggu ertage ore concentration area.

关 键 词：航空瞬变电磁 航磁 异常特征 金铜多金属矿 元宝山地区 新疆 

分 类 号：P319.12[天文地球—固体地球物理学] P318.43[天文地球—地球物理学]