华南铀矿成矿年龄统计分析

华南铀矿分布广泛,铀矿类型包括花岗岩型、斑岩型、火山岩型、碳硅泥岩型和砂岩型,铀矿化通常认为是分期分阶段形成的。本文通过华南130个矿床（点）共361个年龄数据的统计分析,发现铀成矿作用主要发生在145.5Ma以后的中新生代,特别是白亚纪和古近纪。成矿时代具有区域上的同时性,铀成矿作用是一个相对连续的过程。

Statistical analysis of the uranium metallogenic ages in South China

Uranium deposits,which include granite-type,porphyry-type,volcanic rock-type,carbon silicon mudstone-type and sandstone-type,are widely distributed in South China.It is generally recognized that ura- nium mineralization is forms by stages and phases.The statistical analysis of total 361age data from 130U deposits（spots）in South China area shows that the uranium mineralization mainly occurs in the Meso-ceno- zoic Era after 145.5Ma,particularly in Cretaceous and Paleogene.The metallogenic epoch of the same region is of synchrony,and the uranium mineralization is a relatively continuous process.