扎兰屯铀成矿远景带南段铀成矿特征及预测评价  

Characteristics and Target Prediction of Uranium Metallization in the Southern of Zhalantun Uranium Metallogenic Prospect Zone

作　　者：吴燕清 王世成 丁园 刘军港[2] 余弘龙 李杨[1] 王文正 WU Yanqing;WANG Shicheng;DING Yuan;LIU Jungang;YU Honglong;LI Yang;WANG Wenzheng(Geological Party NO.243,CNNC,Chifen,Inner Mongolia 024006,China;Beijing Research Institute of Uranium Geology,Beijing100029,China)

机构地区：[1]核工业二四三大队,内蒙古赤峰024006 [2]核工业北京地质研究院,北京100029

出　　处：《铀矿地质》2020年第2期104-113,共10页Uranium Geology

基　　金：中国核工业地质局铀矿调查评价项目“华北陆块北缘不整合面有关的铀矿成矿条件分析及远景评价”和“河北省沽源县-内蒙古突泉县铀-多金属资源调查评价与勘查”联合资助。

摘　　要：研究区位于扎兰屯火山岩型铀成矿远景带南段,燕山期强烈的构造-岩浆活动造就了区内绝大多数铀成矿作用。通过综合整理前人资料及区内开展的铀矿资源调查评价工作,从铀矿时空分布特征、铀矿化特征对区内铀矿地质特征进行总结分析;将区内火山岩型铀矿划分为潜火山亚类、蚀变裂隙带亚类和层间破碎带亚类3种类型;区内铀成矿受地层岩性、潜火山岩、构造、热液蚀变复合控制,其中潜火山岩和构造起主导性作用;初步预测出4处铀成矿远景区,为下一步找矿工作指明方向和思路,以实现铀资源的扩大预期。The study area is located in the southern section of the Zhalantun volcanic-type uranium metallogenic prospect zone. The strong tectonic-magmatic activity of Yanshanian period greatly affected the uranium metallogenesis in the area. By comprehensively sorting out the predecessor data and the author investigation and evaluation of uranium resources in the area, the geological characteristics of uranium deposits in the area were summarized and analyzed in the temporal and spatial distribution of uranium deposits, and uranium metallogenic features. It was concluded that the uranium metallogenesis was controlled by factors of stratigraphic lithology, subvolcanic rocks, tectonic settings and hydrothermal alterations, and the dominant roles are the tectonic settings, and subvolcanic rocks. According to the main factors, volcanic-type uranium deposits in the area were classified into three sub-types: subvolcanic subtype, alteration fissure zone sub-type and inter-layer fracture zone sub-type. Four uranium metallogenic prospect sectors were preliminarily predicted for the next prospecting work.

关 键 词：铀矿地质特征 成矿控矿因素 预测评价 扎兰屯铀成矿远景带 

分 类 号：P619.14[天文地球—矿床学]