甘肃芨岭岩体主要控矿构造地电结构特征研究  

Geoelectrical characteristics of ore-controlling structure of Jiling pluton in Gansu

作　　者：宋振涛[1,2] 段凌峰 王永军[1] 张占彬[1] 王瑞军 张春雷[1] 王浩然[1] 祁程 SONG Zhentao;DUAN Lingfeng;WANG Yongjun;ZHANG Zhanbin;WANG Ruijun;ZHANG Chunlei;WANG Haoran;QI Cheng(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang 050002,Hebei,China;CNNC Key Laboratory for Geophysical Exploration Technology Center of Uranium Resource,Shijiazhuang 050002,Hebei,China;No.3 Geological Team of Hebei Bureau of Geological and Mineral Resources Exploration,Zhangjiakou 075000,Hebei,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 [3]河北省地矿局第三地质大队,河北张家口075000

出　　处：《矿产与地质》2019年第1期140-145,共6页Mineral Resources and Geology

基　　金：中国核工业地质局基础地质专项(201544;201634;201733)联合资助

摘　　要：甘肃芨岭岩体已发现的三个铀矿床和众多铀矿化(异常)点,均沿NW—NNW向断裂带分布,铀矿化作用总是产于一定的构造部位,因此,加强对芨岭岩体控矿构造研究具有重要意义。通过对芨岭岩体主要控矿断裂构造(马路沟断裂、革命沟断裂、绿草沟断裂以及牛角沟断裂)进行地质、地球物理勘查,获取了主要控矿断裂的地电场结构分布特征,基本厘清了各控矿断裂的地表延伸及深部发育情况等信息,指出了对成矿有利的构造部位。研究表明该地区控矿断裂电性特征一般表现为舌状低阻带、高低阻区分界线或电阻率等值线密集带,认为这种强弱电性异常过渡带可以作为地球物理找矿标志。Jiling rock mass in Gansu has been found that three of the uranium deposits and a large number of uranium mineralization points(abnormal)along the north west fault zones,and uranium mineralization is always produced in certain tectonic position,therefore,to strengthen ore-controlling structure study of Jiling rock mass is of great significance.By means of the geological and geophysical exploration of the main ore-controlling faults of Jiling rock mass(Malugou fracture,Geminggou fracture,Lücaogou fracture and Niujiaogou fracture),got the main characteristics of the geoelectric structure of ore-controlling fractures.The occurrence and deep extension of each ore-controlling fracture was basically clarified,and pointed out the tectonic position favorable for mineralization.The result of the study showed that the ore-controlling fracture electrical characteristics generally show the tongue shape low resistance,high and low resistance line or resistivity isopleth dense belt.The strong and weak electrical anomalies transition zone could be used as geophysical prospecting marks.

关 键 词：铀矿(化) 控矿构造 地电特征 芨岭岩体 甘肃 

分 类 号：P631.3[天文地球—地质矿产勘探] P619.14[天文地球—地质学]