粤北地区铀地质异常特征

Characteristics of Uranium Geological Anomaly in Northern Guangdong Province

运用地质异常理论 ,从铀源、构造、热活动等方面 ,论述了粤北铀矿区的地质异常特征。铀源异常从面上圈定了铀成矿于一个富铀的背景场中 ,构造异常从点线带的关系说明铀成矿定位所必须的通道和沉淀富集场所 ,热活动异常则从岩浆演化系列说明铀成矿的时空演化序次 ,铀成矿于热活动繁杂区中心及其周边。组合熵异常场是三类异常的综合体现 ,最大的组合熵异常必定是最有利的成矿空间场。

The geological anomaly characteristics of uranium deposit region in northern Guangdong are discussed on the aspects of uranium source, structure and thermal activity. Uranium deposits usually occur in the uranium-rich background field. Structure activity provides favourable places for the transportation and precipitation of uranium. Uranium deposits are formed in the central and edge of frequent thermal activity. The assembled entropy anomaly field is the synthetical display for above three anomaly. The biggest assembled entropy anomaly is the most favourable space field for forming uranium deposit