兴义某铀矿土壤氡气特征及其找矿应用

    Characteristics and prospecting application of soil radon in a uranium mining area, Xingyi City, China

    • 摘要: 为进一步摸清兴义某铀矿区内铀矿及断层特征,为下一步钻探施工提供有力依据,采用FD216环境氡测量仪进行土壤氡气测量,并对数据进行综合分析,重点了解该地区土壤氡气含量及其分布特征,圈定土壤氡气异常晕,完善隐伏断层性质,结合地质、化探等资料,分析铀矿成矿特征。通过研究发现,研究区土壤氡气含量与断层走向关联性较好;土壤氡气异常较好区域为南西侧、中部—北东侧。研究区内铀矿赋存于断层破碎带中,且与地层相关,铀矿勘查目标应在三叠系中—下统嘉陵江组一段的断层中。

       

      Abstract: This study aims to further clarify the characteristics of uranium deposits and faults in a uranium mining area in Xingyi City, thereby laying a solid foundation for subsequent drilling operations. Soil radon measurements were conducted using the FD216 environmental radon meter. The data obtained were analyzed comprehensively to determine the content and distribution of radon in the soil, delineate the anomaly halos of soil radon, and refine the properties of concealed faults. Furthermore, the metallogenic characteristics of uranium deposits were examined, combined with geological and geochemical exploration data. This study revealed a strong correlation between soil radon content and fault strike. The most significant radon anomaly zones are located in the southwest and central-northeast sides. Uranium deposits in the study area occur in fault fracture zones and are associated with strata. The uranium exploration target might be located within the fault zone in the first member of the Middle-Lower Triassic Jialingjiang Formation.

       

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