摘要
天华山火山盆地具有较好的铀成矿地质背景,在浅地表发现了大量的铀矿化异常。随着铀矿找矿空间向深部转移,亟需建立有效的综合地球物理勘查技术方法提高解释的可靠性和勘查效果。本文以天华山火山盆地铀矿综合物探为例,采用地面高精度磁法、音频大地电磁法和土壤氡测量联合探测的综合物探方法,大致查明了上侏罗统鹅湖岭组酸性熔岩、火山碎屑岩与燕山早期二长斑岩深部接触关系和断裂发育特征;结合区域成矿规律对铀成矿有利区进行了预测;后续施工钻孔验证了物探方法组合的有效性,取得了较好的勘查效果,为探索天华山火山盆地深部铀成矿提供了依据和参考。
Tianhuashan volcanic basin has a good geologic setting of uranium mineralization,and has found a large number of uranium mineralization anomalies on the shallow surface.With the shift of uranium prospecting space to deeper,it is urgent to establish an effective comprehensive geophysical prospecting technique to improve the reliability of interpretation and prospecting effect.Taking the comprehensive geophysical prospecting of uranium deposits in Tianhuashan volcanic basin as an example,the deep relationship between acid lava or pyroclastic rocks of Ehuling Formation of Upper Jurassic,monzonite porphyry of early Yanshanian and the characteristics of faults development are roughly identified by using the comprehensive geophysical prospecting including high-precision magnetic surveys,magnetotelluric,and soil radon.Combined with the regional metallogenic regularity,the favorable areas of uranium mineralization are predicted.The effectiveness of geophysical combination has been verified by the later drilling holes.The results have provided a basis and reference for exploring deep uranium mineralization in Tianhuashan volcanic basin.
作者
焦智伟
王亚飞
邱崇涛
JIAO Zhiwei;WANG Yafei;QIU Chongtao(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang 050002,China;Key Laboratory for Geophysical Exploration Technology of Uranium Resources,CNNC,Shijiazhuang 050002,China;Hebei Key Laboratory of Airborne Survey and Remote Sensing Technology,Shijiazhuang 050002,China)
出处
《中国矿业》
北大核心
2025年第S1期620-624,共5页
China Mining Magazine
基金
中央财政铀矿地质勘查项目资助(编号:201019)。
关键词
综合物探
异常特征
断裂构造
成矿预测
天华山火山盆地
comprehensive geophysical prospecting
anomalous feature
fracture structure
metallogenic prediction
Tianhuashan volcanic basin
