不同类型热液金矿系统的流体包裹体特征VIP专享VIP免费

第1页共28页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共28页1000-0569/2007/023(09)-2085-08ActaPetrologicaSinica岩石学报不同类型热液金矿系统的流体包裹体特征陈衍景1，2倪培3范宏瑞4FPirajno1，5赖勇2苏文超6张辉6CHENYanJing,NIPei，FANHongRui,FPirajno,LAIYong,SUWenChaoandZHANGHui1.中国科学院广州地球化学研究所成矿动力学重点实验室，广州5106402.北京大学造山带与地壳演化重点实验室，北京1008713.南京大学壳慢演化与成矿国家重点实验室.南京2100934.中国科学院地质与地球物理研究所岩石圈演化重点实验室，北京1000295.GeologySurveyofWestAustralia,100PlanStreet,Perth,WA6004，Australia6.中国科学院地球化学研究所，贵阳5500021.KLMD,GuangzhouInstituteofGeochemistry认ChineseAcademyofSciences,Guangzhou510640，China2.LaboratoryofOrogenandCrustEvolution,PekingUniversity,Beijing100871，China3.KeyLaboratoryofCrust-MantleEvolutionand}ineralization,NanjingUniversity,Nanjing210093，China4.KeyLaboratoryofLithosphereEvolution,InstituteofGeologyandGeophysics,ChineseAcademyofSciences,Beijing100029,China5.GeologySurveyofWestAustralia,100PlainStreet,Perth,WA6004，Australia6.InstituteofGeochemistry，ChineseAcademyofSciences,Guiyang550002，China2006-12-30收稿，2007-06-22改回.ChenYJ,NiP,FanHR,PirajnoF,LaiY,SuWCandZhangH.2007.Diagnosticfluidinclusionsofdifferenttypeshydrothermalgolddeposits.ActaPetrologicaSinica.23(9);2085一2108AbstractThispaper,usinggolddepositsasexample,attemptstosetupascientificlinkagebetweenoregeologyandfluidinclusions，consideringthatinpreviouspublishedworks,observationsandmeasurementsofthefluidinclusionscommonlywerenotwellinterpreted.Insomecases,geologicaldatadidnotagreewiththeresultsobtainedfromfluidinclusionstudies.Inthispaper,wefirstreviewpreviousclassificationsofgolddeposits，andthen，subdividegolddepositsintofiveclasses，basedonthedominantore-formingprocesses:1)intrusion-relatedhypothermalsystems，suchasporphyry-systems,breccia-pipes,IOCGandskarns;2)orogenic-ormetamorphichydrothermaltype;3)epithermal-type,i.c.reworkinghydrothermaldepositshostedincontinental-faciesvolcanic-subvolcanicrocks;4)fine-graindisseminatedtype(Carlin-typeand/orCarlin-style)，i.e.reworkinghydrothermaldepositshostedsediments;and5)hydrothermalmetalliferoussedimentsrelatedtosubmarineventing,suchasVMSandSEDEXstyles.Inthisworkweselectdiagnosticgeologicalandfluid-inclusioncharacteristicsofthesefiveclassesofore-systems，andclarifytheirkeydifferencesthatcanbeusedasgeneticmarkers.Ore-fluidsareclassifiedintothreeend-members，namelyreworking,metamorphicandmagmaticfluids.Manyore-systemsareknowntoformasaresultofmultiplefluidsduringmulti-stageevents;andtheirlate-stageofmineralizationalwaysbeingcausedbyfluidswithahigh-proportionofreworkingoftheoriginaloresystemsorbyrenewedfluidflow.Therefore，thefeaturesoflate-stagefluids，alterationandmineralizationcannotbeusedtoidentifytheoriginandgenetictypeofanore-system.Instead，wesuggestthatonlytheearly-stagesignaturescanbeemployedtodeterminetheoriginandtypeofanore-system.Reworkingfluidsarecharacterizedbylow-temperature(<3000C)，low-salinityandlow-contentofCOZ，andsourcedfrommeteoricand/orseawater;metamorphicfluidsbymoderate-temperature,low-salinityandhigh-contentofCOZ;andmagmaticfluidsbyhigh-本文受国家973项目(2006CB403500)和I_I家自然科学基金项目(编号为40425006,40730421)的资助。第一作者简介:陈衍景，男，1962年生，中国科学院广州地球化学研究所成矿动力学重点实验室研究员，北京大...