航空TEM在二连盆地阿巴嘎旗地区古河道砂体探测中的应用  

Application of Airborne TEM in the Exploration of Paleochannel Sandbody in Abagaqi Area of Erlian Basin

作　　者：骆燕[1,2,3] 江民忠 陈伟[1,2,3] 彭莉红 程莎莎 张伟盟[1,2,3] LUO Yan;JIANG Minzhong;CHEN Wei;PENG Lihong;CHENGShasha;ZHANG Weimeng(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang,Hebei 050002,China;CNNC Key Laboratory of Uranium Resources Geophysical Exploration Technology,Shijiazhuang,Hebei 050002,China;Hebei Key Laboratory of Airborne Survey and Remote Sensing Technology,Shijiazhuang,Hebei 050002,China)

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(重点实验室),河北石家庄050002 [3]河北省航空探测与遥感技术重点实验室,河北石家庄050002

出　　处：《铀矿地质》2021年第5期959-966,共8页Uranium Geology

基　　金：中核集团集中研发项目“龙灿”示范工程科研项目(第二阶段)(编号:中核科发(2018)111号)资助。

摘　　要：二连盆地为一大型中新生代产铀盆地,开展航空时间域电磁法(ATEM)在砂岩型铀矿勘查中的应用研究,对寻找盆内深部隐伏铀矿具有重要意义。文章通过对最新获取的二连盆地阿巴嘎旗东部航空TEM数据开展研究:首先结合已知地质资料,利用电阻率信息建立古河道砂体解释标志;然后推断断面砂体位置;最后提取古河道砂体平面展布信息,并结合基底埋深信息及周边已知矿化信息分析其特征。结果表明,航空TEM能有效推断下伏地层中古河道砂体的空间展布特征,从而验证了航空TEM在砂岩型铀矿勘查中的可行性与有效性。Erlian basin is a large meso-cenozoic uranium producing basin,The identification of concealed sand body is of great significance in the exploration of sandstone type uranium deposits.In this paper,the latest airborne TEM data in the east of Abaga banner were used to identify the paleo-channel sand body in the basin.First,the interpretation marks of the resistivity information for the paleo-channel sandbody was established according to the known geological data;then the sandsbodies information was inferred in resistivity sections;finaly the plane distribution of the paleochannel was extracted to analyze its characteristics by referring the buried depth of the basement.The results showed that the spatial distribution characteristics of paleochannel sandbodies in the underlying strata can be inferred with the airborne TEM data,which verifies the feasibility and effectiveness of airborne TEM in sandstone type uranium exploration.

关 键 词：航空TEM 古河道砂体 二连盆地 阿巴嘎旗地区 

分 类 号：P631.3[天文地球—地质矿产勘探]