ISSN1008-9446CN13-1265/TE承德石油高等专科学校学报JournalofChengdePetroleumCollege第25卷第3期,2023年6月Vol.25,No.3,Jun.2023老挝玻里坎塞省塔帕巴钾盐矿区地质特征及成矿远景评价蒋欢平1,苏俊1,杨照河2(1.云南省地质矿产勘查院,云南昆明650051;2.怒江傈僳族自治州自然资源和规划局,云南泸水673200)摘要:老挝万象平原是世界上重要的钾盐矿分布区,老挝玻里坎塞省塔帕巴县钾盐矿区位于万象平原东部地区,矿区南邻地区已经发现具有工业意义的钾盐矿,说明塔帕巴县钾盐矿区具有较好的钾盐找矿地质条件。在万象平原钾盐矿勘查成果的基础上,通过在塔帕巴地区开展1∶5万地质调查及物探测量(重力调查及大地电磁测深)工作,识别出4个局部重力异常带。重力异常反映了盐岩体顶界面的构造起伏和厚度变化。重力低反映盐岩体厚度膨大;重力高反映盐岩体厚度变小。G2、G4重力负异常带反映出盐岩体上隆、厚度变大的特征,显示出较好的找矿前景,根据对全区资料综合分析、研究,全区共划分Ⅰ类远景区1个,Ⅱ类远景区1个,为今后找矿指明了方向。关键词:塔帕巴;钾盐矿;地质特征;异常带;远景区中图分类号:P619.211文献标志码:B文章编号:1008-9446(2023)03-0001-05GeologicalFeatureandMetallogenicProspectEvaluationofTapabaPotashMiningAreainBolikhamxayProvince,LaosJIANGHuan-ping1,SUJun1,YANGZhao-he2(1.YunnanExplorationInstituteofGeologyandmineralResources,Kunming650051,Yunnan,China;2.NaturalResourcesandPlanningBureau,NujiangAutonomousPrefectureofLisuNationality,Lushui673200,Yunnan,China)Abstract:TheVientianePlaininLaosisanimportantdistributionareaofpotashminesintheworld.ThepotashmineareainTapabaCounty,BolikhamxayProvinceislocatedintheeasternpartofVientianePlain.Potashminesofindustrialsignificancehavebeendiscoveredinthesouthernpartofthisminingarea,whichshowsTapabapotashminingareahasgoodgeologicalconditionsforpotashprospecting.BasedonexplorationresultsofpotashminesinVientianePlain,fourlocalgravitya-nomalouszonewereidentifiedbycarryingoutthe1∶50000geologicalsurveyandgeophysicalmeas-urement(gravitysurveyandmagnetotelluricsounding)inTapabaarea.Thegravityanomalyreflectsthetectonicfluctuationandthicknesschangeofthetopinterfaceofsaltrockbody.Lowgravityindi-catesthatthethicknessofsaltro...
