粤北长江铀矿区铀分量化探与深部找矿潜力

发布时间：2018-08-19 18:32

【摘要】：粤北长江铀矿区位于诸广山复式岩体南缘,是我国重要的铀矿资源基地之一。区内断裂构造发育,岩浆活动频繁,拥有良好的铀成矿地质条件,现已发现铀矿床10余个,大多为浅成低温热液型矿床,深部探矿成果较少。结合相关地质工作成果,在分析矿区地质特征的基础上,首先采用U分量化探技术对矿区深部隐伏矿体进行探测,以剖面的形式采集土壤样品,进行相关测试分析,并对测试结果进行适当处理与图形绘制;然后结合深源铀成矿理论和矿区地质特征对区内的U分量含量总体特征和U分量异常特征进行分析解译,并对区内深部铀成矿条件进行讨论。研究表明:1矿区U分量含量总体较高,与区内有利的铀成矿地质条件相符合,U分量异常明显且与深部铀矿体位置吻合较好,U分量异常基本能够指示区内深部铀矿体的存在;2W、Mo分量异常明显且与U分量异常带吻合较好,U、W、Mo分量异常组合基本可作为该区指示深部铀矿的地球化学标志;3对于U分量异常明显且浓集较强的成矿有利地段,可视实际情况布置相应的钻探工程;4对于异常极强的单点异常和U分量异常不明显但伴生W、Mo分量异常强烈的地段,建议布置槽探等相关揭露工程,查明异常原因及其延伸规模。上述分析表明,粤北长江铀矿区深部找矿潜力较大,分析结果对于该区进一步开展深部铀矿找矿工作有一定的参考价值。
[Abstract]:The Yangtze River uranium ore area in northern Guangdong is located in the southern margin of the Guang Shan complex, and is one of the important uranium resource bases in China. There are more than 10 uranium deposits found in this area, most of them are epithermal hydrothermal deposits, and the deep prospecting results are less. Based on the analysis of the geological characteristics of the mining area, the U component geochemical exploration technique is used to detect the deep concealed orebodies in the mining area, and the soil samples are collected in the form of a section, and the correlation test and analysis are carried out. The test results are properly processed and plotted, and then the total and abnormal characteristics of U component in the area are analyzed and interpreted in combination with the deep source uranium metallogenic theory and the geological characteristics of the ore area. The deep uranium metallogenic conditions in the area are also discussed. The results show that the U component content is relatively high in the Wei 1 mining area. In accordance with the favorable geological conditions of uranium mineralization in the area, the U component anomaly is obvious and the U component anomaly is in good agreement with the location of the deep uranium orebody. The U component anomaly can basically indicate the existence of the deep uranium orebody in the area and is obviously abnormal and different from the U component. The anomaly assemblage of UUGIAN WGN Mo component can be used as a geochemical indicator of deep uranium deposits in this area, which is favorable to U component anomaly and strong concentration. According to the actual situation, it is suggested to arrange the corresponding drilling works such as grooves to find out the reason of anomaly and its extension scale for the section with strong single point anomaly and U component anomaly but strong associated Wimo component, so as to find out the reason of anomaly and its extension scale. The above analysis shows that the deep prospecting potential of the Yangtze uranium ore area in northern Guangdong Province is great, and the results of the analysis have certain reference value for the further development of the deep uranium ore prospecting work in this area.
【作者单位】：东华理工大学地球科学学院;
【基金】：国家自然科学基金项目(编号:U1403292) 江西省研究生创新基金项目(编号:YC2016-B74)
【分类号】：P619.14

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