非洲大陆铀成矿大地构造区划及铀成矿模式  

Geotectonic division and uranium metallogenetic model of African continent

作　　者：姚振凯 黄宏业[1] 徐勇[1] YAO Zhenkai;HUANG Hongye;XU Yong(Research Institute No.230,CNNC,Changsha 410007,China)

机构地区：[1]核工业二三〇研究所,长沙410007

出　　处：《世界核地质科学》2021年第4期403-413,共11页World Nuclear Geoscience

基　　金：中国核工业地质局地勘费项目(编号:201904)资助。

摘　　要：非洲大陆为全球第二大古陆块,拥有常规铀资源量超400万t。依据活化构造理论,以铀成矿大地构造单元为基础,引入成矿区铀矿床数量和铀资源量的量化标准,对非洲大陆铀成矿进行三级大地构造区划,从小至大分为10个铀成矿区,3个铀成矿省,统归为非洲—阿拉伯铀成矿域。非洲大陆大地构造和铀成矿演化极为复杂,分别按陆核、先期地槽、先期地台、地槽、地台和活化等6个大地构造阶段,进行铀成矿分析。陆核阶段未能形成铀矿床,更未形成铀成矿区,共列出6种不同铀成矿大地构造模式。The African continent is the second large continent in the world which host 4 million tons of conventional uranium resources.On the basis of uranium geotectonic units under the theory of activated tectonics,three level of geotectonic uranium unit was divided in the African continent with the quantitative criteria of uranium deposits and uranium resources.The continent was divided into 10 uranium regions and 3 uranium provinces,which fall into African-Arab uranium domain.The evolution of continental tectonics and uranium regions in Africa is very complex.Uranium mineralization was analyzed according to 6 tectonic stages of continental core,pre-geosyncline,pre-platform,geosyncline,platform and activated.The continental core stage failed to form uranium deposits,not to say uranium region.A total of 6 different types of uranium geotectonic models were listed.

关 键 词：非洲大陆 大地构造演化 铀成矿作用 大地构造区划 成矿模式 

分 类 号：P619.14[天文地球—矿床学]