化工矿产地质2026，Vol.48Issue(2)：111-121,11.
非洲下刚果盆地布谷马西钾矿区南部矿段沉积旋回研究
Study of the Sedimentary Cycles in the Southern Mining Section of the Bougouma Potash Mining Area,Lower Congo Basin,Africa
摘要
Abstract
To finely characterize the evaporite deposition features and mineralization patterns in the southern mining section of the Mboukoumassi area in the Congo Basin,this study conducts high-resolution sedimentary cycle research based on core,lithology,and thickness data from 15 boreholes,contour maps,sedimentological analysis,and halite fluid inclusion thermometry.The results show that sedimentary cycles Ⅱ-Ⅺ,totaling 10 sedimentary cycles,are developed in the study area,with the regional cycle Ⅰ missing;Cycles Ⅳ-Ⅶ are favorable sections for potassium-magnesium salt enrichment,characterized by the development of halite sylvite langbeinite assemblages.The migration of their sedimentary centers reveals that the sedimentary process is controlled by syn-sedimentary structures and paleotopography.Halite fluid inclusion thermometry indicates that the homogenization temperatures of paleobrines are concentrated between 25～45℃ range,significantly higher than the ambient temperature,revealing an abnormal thermal background during the salt formation period.This study preliminarily establishes the sedimentary model of the research area,enriches the understanding of regional potash mineralization mechanisms,and provides direct geological evidence and theoretical basis for subsequent mineral exploration in the mining area and surrounding regions.关键词
下刚果盆地/布谷马西钾矿区/沉积旋回划分/等值线图/石盐流体包裹体测温Key words
Lower congo basin/Bougouma potash mining area/Depositional cycle division/Contour map/Temperature measurement of halite fluid inclusions分类
天文与地球科学引用本文复制引用
侯书荣,赵宪福,赵艳军,龙鹏宇,崔子豪..非洲下刚果盆地布谷马西钾矿区南部矿段沉积旋回研究[J].化工矿产地质,2026,48(2):111-121,11.基金项目
国家重点研发计划项目课题 青海察尔汗盐湖低品位固体钾盐赋存规律与驱动溶矿液化技术(编号:2023YFC2906502) （编号:2023YFC2906502）
