南岭中段中生代构造-岩浆活动与铀成矿序列

Mesozoic tectonomagmatic activity and uranium metallogenetic sequence in mid-Nanling tectonic belt

本文通过对南岭中段中生代各类侵入岩体的侵入关系、构造活动及热液脉体的归纳分析 ,结合同位素测龄资料 ,对该区中生代以来构造 岩浆、热液活动及铀矿化先后关系进行了排序 ,总结了不同阶段构造 岩浆和热液活动的特征 ,讨论了花岗岩型铀矿成矿作用前后各类成矿控制因素的先后关系 ,认为铀成矿作用在时间和空间上与中生代构造 岩浆、热液活动有着十分密切的联系。

Based on the synthesis and analysis of the relationship of various Mesozoic intrusive massifs, the tectonic activity, and the hydrothermal veins, as well as data of isotopic geochronology, this paper makes a time sequence of the tectonomagmatic activitlies, the hydrothermal activitlies and uranium mineralization, and summarizes characteristics of tectonomagmatic and hydrothermal activities of different stages, and discusses the time sequence of various ore controlling factors for granite type uranium metallogeny. Finally, authors conclude that uranium metallogeny shows a very close spatial and temporal relationship to Mesozoic tectonomagmatic and hydrothermal activities.