AMT和Ra?法测氡在连山关地区铀矿勘查中的组合应用

Combined application of AMT and Ra? radon measuring method in uranium exploration in Lianshanguan area

连山关岩体接触带是连山关地区一条重要的控矿构造带,为区内成矿热液的运移提供了通道,为铀矿富集提供了有利空间。已发现的铀矿点、铀工业孔及异常孔主要分布于岩体接触带附近的氡浓度异常晕、异常点、异常带中。查明连山关岩体接触带的走向及其深部展布特征对本区铀矿找矿工作意义重大。应用音频大地电磁测量(AMT)和Ra?法测氡进行综合测量,结合地质资料和岩石电阻率特征,基本查明了连山关岩体接触带的走向及其深部展布特征,在该区铀矿勘查中取得了较好的效果,为相关地区的铀矿勘查提供了借鉴。

Lianshanguan contact zone of rock mass is an important ore-controlling tectonic belt,which provides a channel for the migration of ore-forming hydrothermal fluid,and provides favorable condition for uranium enrichment.All known ore point of uranium,uranium industry holes and abnormal holes are mainly distributed in the anomaly halos,anomaly points,anomaly zone of radon which is adjacent the contact zone of rock mass.It is of great significance to determine the strike and deep distribution characteristics of Lianshanguan contact zone of rock mass,so as to help the exploration of uranium deposits in this area.Through comprehensive measurement by applying audio magnetotelluric survey(AMT)and RaA radon measuring method,based on the geological data and features of rock resistivity,the authors identified the strike and deep distribution characteristics of Lianshanguan contact zone of rock mass.The findings achieved good results in the exploration of uranium deposits in this area,and provided reference for exploration of uranium ores in related areas.