宽城破火山盆地地热资源赋存特征与成因研究

打开文本图片集

中图分类号：P314.2 文献标识码：A 文章编号：2097-5465（2025）06-0018-07

Abstract：TheKuanchengcaldera basinwas formedduring theYanshanianperiodunderintense tectonicmovements， explorationresultshaveconfirmedthatabundantgeothermalresourcesarehostedwithinthebasin.Toachievescientificdevelopment ratioalutilizationthesegeothermalresources，researchonthegeothermalformationmechanismgeneticmodelinthearea hasbenconductedtroughmeanssuchasgeotheralgeolgicalsurveys，geophsicalprospecting，hyrogeochemicalaalysis. Thestudyindicatesthatthehydrothermal-typegeothermalresourcesintheaeaaredominatedbyconductiveheat.Thegeothermal reservoiriscomposeddolomitetheWumishanFormation，withheatfromtheuppermantleconductionastheprimaryheat sourceresidual magmaticheatasasecondaryheatsource.Accordingtochemicalgeothermometercalculations，thegeothermal reservoir temperature ranges from 36qC to 51°C ，classifying itas amedium-low temperature reservoir.The circulation depthis approximately8OOmeters，whichisclosetotheexposeddepththegeothermalreservoir，furtherconfirmingthattheareahosts a conductive geothermal system.Water quality analysis reveals that the geothermalfluid in the areais the HCO ′3 -Ca ·Mg type， derivedfromatmosphericprecipitationthusatmosphericorigin.Theresearchresultscanprovideimportantreferencesforthe exploration，development， utilization geothermal resources in the Kuancheng caldera basin.

Keywords：geothermal resources；genetic model；water quality analysis；Kuancheng caldera basin

0 引言

地热资源是一种集水、热、矿于一身的清洁可再生能源[1-2]。（剩余8402字）