砂岩型铀成矿区成矿大地构造环境  

Metallogenic Geotectonic Environment of Sandstone⁃type Uranium Metallogenic Region

作　　者：姚振凯 黄宏业[1,2] 徐勇 YAO Zhenkai;HUANG Hongye;XU Yong(Research Institute No.230,CNNC,Changsha 410007,China;Hunan Engineering Technology Research Center for Evaluation and Comprehensive Utilization of Associated Radioactive Mineral Resources,Changsha 410007,China)

机构地区：[1]核工业二三〇研究所,湖南长沙410007 [2]湖南省伴生放射性矿产资源评价与综合利用工程技术研究中心,湖南长沙410007

出　　处：《东华理工大学学报(自然科学版)》2025年第1期1-14,共14页Journal of East China University of Technology(Natural Science)

基　　金：中国核工业地质局项目“诸广中段鹿井矿田铀矿资源调查评价与勘查”(202231)。

摘　　要：砂岩型铀成矿区数量多,分布广,涵盖铀矿床数达654个,占全球铀矿床数量和常规铀资源量的首位。前人多从矿床角度对砂岩型铀矿床进行研究,较少从大地构造环境与铀成矿方面分析。依据活化构造和构造岩浆活化理论,用成矿分析正反推演方法,研究砂岩型铀成矿区成矿大地构造环境,得出砂岩型铀矿床可划分为43个主要铀成矿区,其中29个属单砂岩型铀成矿区,14个属复合(伴有其他铀矿类型)砂岩型铀成矿区。砂岩型铀成矿区成矿大地构造环境,按其大地构造属性分成地盾活化、古地台活化、年青地台活化、中间地块活化等4种类型。其共同特点是与活化构造成矿作用密切有关,只是活化作用时代、延续时间、作用方式和强度不同。年青地台活化、中间地块活化砂岩型铀成矿区分布广,数量多,铀资源量大,工业意义最大;古地台活化成矿区次之;地盾活化成矿区分布少,铀资源量少,工业意义较小。Sandstone⁃type uranium metallogenic provinces are numerous and widely distributed,containing 654 uranium deposits.The number of sandstone⁃type uranium deposits and their uranium resources are both ranked first in the world.Previous studies have made extensive contributions to the genesis of sandstone⁃type uranium de⁃posits.However,research on the relationship between the tectonic environment and uranium metallogenesis has been relatively weak.Based on the theories of activated tectonics and tectonic⁃magmatic activation,the forward and reverse deduction method in the metallogenic analysis are employed to investigate.The metallogenic tectonic environment of sandstone⁃type uranium provinces.The findings show that sandstone⁃type uranium deposits can be categorized into 43 major uranium metallogenic provinces,with 29 being single sandstone⁃type uranium provinces and 14 being composite(associated with other types of uranium deposits)sandstone⁃type uranium provinces.The metallogenic tectonic environments of sandstone⁃type uranium provinces are divided into four types based on their tectonic attributes:shield activation,ancient platform activation,young platform activation,and block activation.The common characteristic of these types is their close association with activated tectonic metallogenesis,though the timing,duration,mode,and intensity of the activation processes vary.Young platform activation and block activation sandstone⁃type uranium provinces are widespread,numerous,and contain large uranium resources,making them of the greatest industrial significance.Ancient platform activation metallogenic provinces are of sec⁃ondary importance,while shield activation metallogenic provinces are less widespread,contain fewer uranium re⁃sources,and have lower industrial significance.

关 键 词：砂岩型铀矿 成矿区 大地构造环境 

分 类 号：P619.14[天文地球—矿床学]