华北地质2025，Vol.48Issue(4)：1-16,16.DOI:10.19948/j.12-1471/P.2025.04.01
我国砂岩型铀矿成矿构造研究现状及发展趋势
Research status and development trend of sandstone-type uranium deposit metallogenic structures in China
摘要
Abstract
[Objective]The traditional theory of sandstone-type uranium mineralization has limitations in understanding the role of tectonics in mineralization.However,the distribution and occurrence characteristics of sandstone-type uranium deposits in China are significantly controlled by tectonics.To deeply analyze the constraining mechanism of tectonic elements on the uranium mineralization process,we systematically study the mineralization characteristics of the main sandstone-type uranium deposit clusters in China,aiming to reveal the different manifestations and causes of uranium mineralization under different tectonic backgrounds.[Method]By conducting a comprehensive comparative analysis of the mineralization characteristics of typical sandstone-type uranium deposit clusters in Northwest,North Central and Northeast China,and combining the mineralization dynamic background,the coupling relationship between tectonics,fluids,and mineralization is explored.[Results]The study shows that uranium mineralization in Northwest China is concentrated in the foreland basins of compressive orogenic belts,forming typical interlayer oxidation zone-type uranium deposits;in North Central China,it exhibits complex mineralization characteristics closely related to strike-slip fault systems;uranium mineralization in Northeast China is mainly controlled by the extensional tectonic regime,with the development of deep thermal fluid superimposed and remodeled uranium mineralization.Deep fluids migrate along fault systems and alter the geochemical environment of ore-bearing layers,promoting the accumulation of uranium in favorable tectonic positions;neotectonic movements,through the reactivation of faults and differential uplift of basins,not only transform pre-existing mineralization bodies but also form complex features of multi-stage fluid superimposed mineralization.[Conclusion]The coupling mechanism of tectonics,fluids,and mineralization is the key to understanding the mineralization laws of sandstone-type uranium deposits.It is suggested that in the future,efforts should be focused on constructing a coupling model of tectonics,fluids,and mineralization,and strengthening the application of deep exploration prediction technologies to provide theoretical and technical support for expanding the exploration of uranium resources.关键词
砂岩型铀矿/控矿构造/成矿作用/新构造运动/地震勘探Key words
sandstone-type uranium deposit/ore-controlling structures/mineralization process/neotectonic movements/seismic exploration分类
天文与地球科学引用本文复制引用
封志兵,佘尚阳,白磊,张鑫,李立尧,江丽,齐增硕,史佳乐,王晓菲..我国砂岩型铀矿成矿构造研究现状及发展趋势[J].华北地质,2025,48(4):1-16,16.基金项目
中国地质调查局华北地质科技创新中心人才培育基金项目(2024HBPJ-Q09)、中国铀业有限公司-东华理工大学核资源与环境国家重点实验室联合创新基金项目(2023NRE-LH-08)、江西省自然科学基金项目(20252BAC240270)、国家自然科学基金项目(U2244205)资助成果 Supported by the Talent Cultivation Fund Project of the North China Geological Science and Technology Innovation Center of the China Geological Survey(2024HBPJ-Q09),the Joint Innovation Fund Project of China Uranium Industry Co.,Ltd.East China University of Technology-State Key Laboratory of Nuclear Resources and Environment(2023NRE-LH-08),the Natural Science Foundation Project of Jiangxi Province(20252BAC240270),and the National Natural Science Foundation Project(U2244205). （2024HBPJ-Q09）
