高精度磁测预测砂岩铀矿氧化带前锋线

The prediction of the front of the sandstone uranium deposit oxidation zone based on high-precision magnetic measurement

通过伊犁盆地南缘地面高精度磁测的开展、航空高精度磁测资料的应用以及钻孔岩心的磁化率测量,对层间氧化带型砂岩铀矿各地球化学分带的铁磁矿物分布特征、磁化率变化特征和磁场特征以及与铀矿化的关系进行了系统地研究,探讨了利用高精度磁测确定氧化—还原过渡带的位置的可行性、机理和方法,对砂岩型铀矿氧化带前锋线位置和铀成矿远景靶区的预测具有重要作用。

Through high-precision ground magnetic suryey, high-precision aviation magnetic data application, and susceptibility meas-urements of drill core in Hi basin, the authors made a systematic study which included ferromagnetic mineral distribution characteris-tics ,susceptibility variation characteristics of geochemical zoning of interlayer oxidation zone sandstone uranium deposits and the rela-tionship with uranium mineralization, investigated feasibility, mechanism and methods of locating oxidation-reduction zone lby means of high-precision magnetic survey. The results obtained by the authors have an important role in prediction of front line of the oxidation zone and prognosis of uranium mineralization target.