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1、GeologicalStructureStudyonCaijiayingPb-Zn-AgDepositofHebeiProvinceZhangYongxing1GuShangyi2(1.217GeologicalBrigade,ShanxiProvincialBureauofGeologyandMineralExplorationandExploitation,Datong037008,China;2.SchoolofResourcesandEnvironment,GuizhouUniversityofTechnology,GuShangyi550003,China)Abstract:C
2、aijiayingPb—Zn—AgDepositistypicallycontrolledbygeologicalstructure.Theregionalore-guidedstructuresarecharacterizedbymulti-stagemovement.Theearlytensionalprocessofthestructurescontrolledthedistributionofmagmaticrocksinthearea;thelatecompressive-shearprocessformedplumestructuresarrangedinparallelbe
3、sidetheregionalstructures,whichprovidedaproperspaceforlocationofthermalfluidandformationofPb-Zn-Agdeposit.Consistencebetweenisotopicmodelageofleadoreandintrusionageofquartzporphyryshowscloserelationsamongstructuremovements,magmatismandmineralizationinStageofYanshan.Keywords:Pb-Zn-Agdeposit;geolog
4、icalstructure;Caijiaying.CaijiayingPb-Zn-Agdepositisapartlyblinddeposit,whichwasfoundin1959.Accordingtomanyyears’work,theresultsindicatethatitisalarge-scaledZn-Agdeposit,amiddle-scaledPb-SdepositandalargescaledassociatedAudeposit.Itisalsoanewbreakthroughinourgeologists’prospectingworkinthenorther
5、nedgeofNorthChinaPlatform,andsomenewproposalsweresuggestedasreferencesfororeprospectingafterwards.Bynow,manyresearchershavemadealargevarietyofstudiesonCaijiayingPb-Zn-Agdeposit,includinggeochemicalcharacteristics,mineralcharacteristics,occurrencestatusofpreciousmetalsinmineral,geophysicalandgeoch
6、emicalprospectingmodel,etc.,buttherearenopapersaboutstructuresofthisdistrict.Theauthorsfindoutthatstructuresofdifferentstagesinthisdistrictcancontrolformationordestroythisdepositafteritsformation.1.GeologicalSettingsCaijiayingPb-Zn-AgdepositliesontheeasternedgeoftheCaijiayingconvexinthemiddleofIn
7、nerMongoliaAnticline,anditisapaleo-upliftregioninthemiddleofthenorthernedgeoftheNorthChinaPlatform.Althoughtheexposedstrataaresimpleinthedistrict,thetectonicandmagmaticactivitiesarefrequentandviolent,whichprovidebenefi
