音频大地电磁测深法在尼日尔阿泽里克铀成矿区的应用研究

Application study on audio-frequency magnetotelluric method in Azelik uranium metallogenic zone of Niger

尼日尔阿泽里克地区地表大部分覆盖第四系砂土层,基岩出露较少。针对这种情况,在该区开展了音频大地电磁测深工作,结合地质、钻孔资料,推断解译了尼日尔阿泽里克地区地下岩性分布、断裂构造发育及目标层埋深等成矿地质环境,为有利找矿靶区预测提供依据。

The most area of Azelik in Niger is covered by Quaternary sandy soil and there are only a few outcrops of bed rock. In this case, the geoelectric information was derived by using the audio-frequency magnetotelluric（AMT） method, combined with geology and drilling data, the underground lithologic distribution, the fracture zone and the buried depth of target layer were interpreted and deduced. These provided the basis for the delineation of favorable metallogenic area.