An analysis of uranium ore-searching prospect of airborne radiocactive anomaly zone on the southern margin of Pingyi depression in the Chaoshui Basin
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摘要: 潮水盆地是河西走廊北侧阿拉善台隆中部的中新生代伸展断陷盆地.盆地中分布砂岩型、泥岩型、煤岩型4个铀矿床,13个铀矿点及数十处铀矿化点.通过对潮水盆地平易凹陷一带分布的航空放射性异常查证结果分析,结合盆地成矿地质背景、成矿特征、铀源、找矿目的层特征等,探讨了潮水盆地平易凹陷南缘铀找矿前景.分析认为,在平易一带白垩系存在有利的找矿目的层段,是找矿的突破口,航空放射性异常区是重点找矿地段,值得进一步探索.Abstract: The Tidal Basin is a Mesozoic-Cenozoic stretching fault basin in central Alxa platform uplift on the northern side of the Hexi Corridor.In this basis,there are four uranium deposits belonging to sandstone type,mudstone type and coal rock type,thirteen uranium ore spots and dozens of uranium mineralized spots.Through an analysis of the verification results of airborne radioactive anomalies distributed in Pingyi depression of the Tidal Basin in combination with ore-forming geological setting,metallogenic characteristics,uranium source and ore-prospecting target bed of the basin,the authors investigated the vista in search for uranium deposits on the southern margin of Pingyi depression in the Tidal Basin.The analysis shows that Cretaceous strata in Pingyi area have favorable ore-prospecting target bed which seems to be the breakthrough point of ore-prospecting,and the airborne radioactive anomaly area is the key ore-prospecting segment deserving further investigation.
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