摘要
二连盆地郭尔奔地区铀成矿条件优越,发育河流沉积体系,但构造单元和目标层赛汉组砂体展布特征不明,已成为制约研究区铀矿勘查突破的瓶颈。通过在郭尔奔地区开展可控源音频大地电磁测量(CSAMT)工作,采用SCS2D软件进行电磁反演,推断了找矿目标层下白垩统赛汉组砂体的空间展布特征,主要分布于伊和乌素凹陷和赛汉塔拉凹陷内,埋深135~560 m,厚80~440 m。对研究区构造单元进行了新的划分,断裂控制了构造单元边界。通过实地地质调查及后续钻孔的验证,证明了本次解释结果的准确性,为二连盆地的砂岩型铀矿勘查提供了参考与借鉴。
The Guorbun Area in Erlian Basin has excellent conditions for uranium mineralization,with the development of fluvial sedimentary system,but the tectonic unit and the target layer of the Saihan Formation sand body are not well characterized,which has become a bottleneck restricting the breakthrough of uranium exploration in the study area.Through the controlled-source audio geomagnetic survey(CSAMT)and electromagnetic inversion using SCS2D software,the spatial distribution characteristics of the sand body of the Lower Cretaceous Saihan Formation,which is the target layer of uranium mineralization,have been deduced,and the sand body is mainly located in the Yihewusu and Saihantala Depressions,with a depth of 135-560 m and a thickness of 80-440 m.The tectonic unit in the area has been newly divided,and the boundaries of tectonic units have been controlled by the fracture.The boundaries of the tectonic units are controlled.The field geological survey and subsequent drill holes have proved the accuracy of the interpreted results,which provide reference for the exploration of sandstone-type uranium mines in the Erlian Basin.
作者
陈功
张俊伟
艾虎
CHEN Gong;ZHANG Junwei;AI Hu(Nuclear Industry Aerospace Remote Sensing Center(NIRSC),Shijiazhuang 050002,China;China National Uranium Resources Geophysical Exploration Technology Center(Key Laboratory),Shijiazhuang 050002,China;Hebei Provincial Key Laboratory of Aerial Detection and Remote Sensing Technology,Shijiazhuang 050002,China)
出处
《中国矿业》
北大核心
2025年第S1期646-652,共7页
China Mining Magazine
基金
中央财政铀矿地质勘查项目资助(编号:202402-8)。
