柴东地区航放异常成因及其找矿意义  

Genesis of airborne radioactive anomalies in eastern Chaidamu and its prospecting significance

作　　者：邵飞[1] 

机构地区：[1]中国地质大学研究生院,湖北武汉430074

出　　处：《铀矿地质》2002年第5期302-307,共6页Uranium Geology

摘　　要：1997年在柴达木盆地东部 (柴东地区 )五道梁及北霍布逊湖地区发现了两片共 7处航放异常。本文从基础地质条件出发 ,分析、研究了柴东地区的区域地下水动力条件 ,对航放异常区的放射性水文地球化学特征进行了分析 ,重点解剖了五道梁地区航放异常。从水文地质角度探讨了航放异常成因 ,认为其反映了深部铀成矿信息 ,进而指出柴东地区有利于形成层间氧化带砂岩型铀矿化 ,值得进一步工作。Two anomalous areas composed of seven airborne radioactive anomalies were discovered in Wudaoliang and north Huobuxun lake, eastern Chaidamu basin in 1997.Based on basic geological conditions, and using the theory of groundwater system, this paper presents dynamic conditions of regional groundwater in eas tern Chaidamu basin. Meanwhile, radioactive hydrogeochemical characteristics in airborne radioactive anomalous areas are analyzed, and airborne radioactive anomalies in Wudaoliang area are emphatically discussed. From the aspect of hydrogeology the genesis of airborne radioactive anomalies is suggested and those anomalies can be considered as the information of deep uranium mineralization. Furthermore, the author suggests that the eastern Chaidamu area is favorable for the formation of interlayer oxidation zone sandstone type uranium mineralization, and is worth further prospecting.

关 键 词：航放异常 成因 地下水系统 砂岩型铀矿床 柴达木盆地 层间氧化带 

分 类 号：P619.14[天文地球—矿床学]