放射性物探在相山盆地深部火成岩型铀矿勘查中的应用

Application of radioactive geophysical exploration for the deep volcanic rock type uranium deposit exploration in Xiangshan basin

通过在相山盆地实施放射性物探方法测量,查明了相山盆地放射性异常展布特征。推测并圈定了相山盆地地面伽马能谱铀、钍、钾及土壤氡的异常远景区。通过分析异常远景区及综合信息异常,认为相山盆地放射性异常主要是以相山为中心的断续团块状环形排列并向西延伸至同富,放射性异常受火山塌陷构造控制明显,结合已知铀矿床,表明火山塌陷构造上的放射性异常对相山深部大铀矿评价具有重要的指示意义。

The characteristics of radioactive anomaly distribution were found out by radioactive geophysical exploration in recent years in Xiangshan basin. The anomaly prospect areas of the uranium, thorium, and potassium which calculated by ground gamma ray spectrum and soil radon were speculated and delineated in Xiangshan basin. It was believed that radioactive anomaly were mainly arranged as intermittent lumps in a ring around the center of the Xiangshan mountain and extend westward to Tongfu by analyzing the anomaly prospect area and the anomaly of integrated information, the radioactive anomaly were controlled by volcanic collapse structure. Combined with the uranium deposits, the result shew that the radioactive anomaly on the volcanic collapse structure had important indication significance in the appraisals of deep uranium deposits in Xiangshan basin.