航放航磁资料在二连盆地中西部铀矿远景预测中的应用研究  

Application of Airborne Radioactive and Magnetic Data in the Prognosis of Uranium Metallization in the Mid-west of Erlian Basin

作　　者：张翔[1,2] 杨玉勤 张俊伟[1,2] 石连成 邓德伟[1,2] 孟祥宝 程莎莎[1,2] 陈志鹏 ZHANG Xiang;YANG Yuqin;ZHANG Junwei;SHI Liancheng;DENG Dewei;MENG Xiangbao;CHENG Shasha;CHEN Zhipeng(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)

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：《铀矿地质》2020年第6期541-553,共13页Uranium Geology

基　　金：中国核工业地质局“内蒙古二连浩特地区1:5万航空物探调查”项目(编号:201811-1);中国地质调查局“内蒙古满都拉-苏尼特右旗地区1:5万航空物探(磁、放)调查”项目(编号:DD2016006659)联合资助。

摘　　要：利用二连盆地中西部最新1∶5万高精度航放、航磁资料,通过分析区域航放、航磁特征,划分了区内断裂构造及岩性分布;初步建立了基于航磁信息的古河道推断方法并推断了4条古河道。在分别提取了8种古河道砂岩型及6种泥(砂)岩型铀矿找矿有利信息的基础上,采用基于GIS的多元信息成矿预测技术实现了各类预测信息融合,圈定了9片铀矿找矿远景区,提出了该区铀矿找矿方向的新认识。预测结果表明:江岸牧场-脑木根、布拉格东、本巴特西、木哈尔音乌苏-卫井4个区域应主攻古河道型铀矿,兼顾浅部泥(砂)型铀矿;伊和乌苏、脑木根南、苏尼特右旗西及额仁淖尔南4个区域应探索古河道砂岩型铀矿;查干淖尔西应主攻浅地表泥(砂)岩型铀矿,并在其西部探索深部古河道型铀矿。Based on the latest 1:50000 high-precision aeromagnetic and aeroradioactive data in the central-western Erlian Basin,the lithology units and faults were delineated,four paleochannels were derived by analyzing the airborne magnetic characteristics.On this basis,eight prospecting information marks for paleochannel sandstone type uranium deposit and six for argillaceous(sandy)type uranium deposit were extracted.A GIS-based exploration technique has been realized for the intergration of multi-information,and 9 uranium prospects were delineated.Jiang'an pasture-Naomugen,Bulagedong,Benbatexi prospects were predicted mainly for paleochannel-type and shallow argillaceous(sandy)type,and Muhalywusu-Weijing prospect were oriented for paleochannel sandstone-type;Yihewusu,Naomugennan,west Suniteyouqi and south Erenzhuoer prospects were predicted mainly for shallow argillaceous(sandy)type;Chaganzhuoer prospect was predicted for shallow argillaceous(sandy)type on the whole and paleochannel type in the west.

关 键 词：航放航磁 铀矿远景预测 铀找矿有利信息 古河道 二连盆地中西部 

分 类 号：P631.64[天文地球—地质矿产勘探] P619.14[天文地球—地质学]