地质找矿论丛2025，Vol.40Issue(2)：150-157,8.DOI:10.6053/j.issn.1001-1412.2025.02.002
广西煤盆地隐伏地热成因模型及找矿靶区圈定
Genetic model of concealed geothermal resources and the prospecting target delineation in Guangxi coal basins
摘要
Abstract
Based on data collected and analysis,according to the geothermal occurrence theory,the data genetic model and delineation of concealed geothermal resources in coal basins in Guangxi Zhuang Autono-mous Region are summarized,and conditions of generation,storage,migration,cover and accumulation are comprehensively discussed.A conclusion about the genetic model is drawn that heat of conductive geother-mal water is derived from the mantle and radioactive heat from the deep crust,while that of convective ge-othermal water comes from friction of Holocene seismogenic structural movement.Water of the geother-mal fluid is mainly derived from meteoric water.The basins generally have large catchment area and tend to receive precipitation from the surroundings.Geothermal reservoirs occur mainly in sandstone,porous sandy conglomerate,and karst fractured limestone.The cataclastic fracture zone is a condition of heat res-ervoir.Mudstone,mudy shale and marl are the cover rocks.Geothermal fluid migrate along fractures and interformational porous fractures,and conduit of overprint of the two fractures.The heat fluid is mainly accumulated in synclines.In addition to the above geological analysis shows that NW fracture is the main heat conductive structure,followed by the NE and NNE fractures.Intersections of the two sets of fractures are the favorite targets.Sandstone,sandy conglomerate and limestone in fault basin and depression basin are the favorite reservoirs.关键词
隐伏地热/成因模型/找矿靶区圈定/广西煤盆地Key words
concealed geothermal resources/genetic model/delineation of geothermal prospecting tar-get/coal basins in Guangxi Zhuang Autonomous Region分类
天文与地球科学引用本文复制引用
王辉,赵冠华,李活英,周立坚,韦红,卢安康..广西煤盆地隐伏地热成因模型及找矿靶区圈定[J].地质找矿论丛,2025,40(2):150-157,8.基金项目
广西自然科学基金面上项目(编号:2022GXNSFA035576、2024GXNSFAA999213)和中国煤炭地质总局重大科技专项"揭榜挂帅"项目(编号:ZMKJ-2023-JBGS02-03)联合资助. （编号:2022GXNSFA035576、2024GXNSFAA999213）
