以热液成矿理论及放射性元素地球化学理论为基础,阐明放射性异常形成的地质原因,指出异常的特征与热液成矿环境、矿脉物质成分、构造破碎带的岩性以及围岩蚀变类型等有关,划分出3种异常类型,并用3种理论异常模式表示。其中,Rn异常具有共同的特征,即马鞍形高异常,鞍部对应矿脉位置。而U,Th,K含量异常特征,在不同地质条件下,则有3种不同类型。当引用三者的综合参数F_q值表示时效果尤为明显,其异常的极值点(高或低)更确切地对应矿脉位置。 Based on the hydrothermal mineralization theory and the radioactive element geochemistry theory, the geological reasons for the formation of radioactive anomalies are elucidated. The characteristics of the anomaly and hydrothermal mineralization, the composition of the veins, the lithology of structural fractures and the types of wall rock alteration And so on, divided into three types of anomalies, and three kinds of theoretical anomaly patterns. Among them, the Rn anomaly has the common feature that saddle-shaped high anomaly, saddle corresponds to the location of veins. The U, Th, K content anomalous features, in different geological conditions, there are 3 different types. The effect is particularly obvious when the three parameters F_q are quoted, and the extreme point (high or low) of the anomaly corresponds to the veins more exactly.