广东兴宁盆地及其外围铀成矿地质条件及成矿潜力

Uranium Metallogenic Geological Conditions and Metallogenic Potential in Xingning Basin and Its Periphery in Guangdong Province

兴宁盆地位于NE向邵武—河源断裂带与五华断裂带的夹持区,铀成矿地质条件优越,具有有利的地层、岩浆岩、物化探条件,优越的成矿构造环境和极其发育的铀矿化、异常点。结合区域地质工作成果,详细分析了该区地质特征及铀成矿潜力。结果表明:区内区域性深大断裂旁侧次级硅化带或辉绿岩组带的发育部位,尤其是硅化带与中基性岩脉交汇,且出现硅化、赤铁矿化、次生铀矿化与各类物化探异常叠加的地段是铀成矿的有利地段。

Xingning Basin is located in intersection area of NE direction Shaowu-Heyuan fault zone and Wuhua fault zone,the uranium metallogenic potential of the area is good,the metallogenic conditions such as strata,magmatic rock,geophysical and geochemical conditions are favorable,the metallogenic tectonic environment of the area is good,besides that,the uranium ore and anomalies are well developed in the area.Combing with the geological results of the area,the metallogenic geological conditions and metallogenic potential of the basin and its periphery are discussed.The results show that the developed locations of the secondary silicified zone or the diabase zone along the regional deep faults,especially for the intersection area that the silicified zone and intermediate-basic veins,and the superposition area of silication,hematitization,secondary uranium mineralization and various geophysical and geochemical anomalies are favorable areas for uranium metallogenic.