新疆南天山乌什塔拉岩体铀成矿条件分析与成矿预测

Analysis on Uranium Metallogenic Condition and Potential of Wushitala Pluton in the South Tianshan Mountains,Xinjiang

新疆南天山地区构造活动剧烈,岩浆活动频繁,花岗岩具有期次多、分布广、面积大的特点。文章着重介绍了位于南天山褶皱带的乌什塔拉岩体,从区域地质背景、花岗岩的含铀性、构造控矿、热液蚀变特征和遥感影像特征等方面,对该岩体的铀成矿地质条件进行综合分析,认为其具备形成花岗岩型铀矿的基本地质条件,找矿工作应以隐性构造与显性构造的交汇部位作为突破点。

Southern Tianshan area is with intense tectonic activity,frequent magmatism,multi-stages and wide distributed granite.This study focuses on the Wushitala pluton which is located in the Southern Tianshan fold belt in the aspects of regional metallogenic background,uranium content of granite,orecontrolling structure,hydrothermal alteration,remote sensing image feature.Comprehensive analysis on geological conditions of uranium metallogenesis show that Wushitala pluton has the basic uraniumforming conditions and the future exploration efforts may get breakthrough at the intersection of hidden structures and evident structures.