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简介：Inthelightoffieldinvestigation,microscopicstudy,X-rayphaseanalysisandmineralinfraredspectralanalysis,itisconsideredthatlaumontitizationisofextensiveoccurrenceintheAxigoldorefield.Thedevelopmentoflaumontitizationanditsrelationshiptomineralizationshowthatthelaumontitizationappearedmainlyatthetopofandintheperipheryoforebodies,andoccurredattheedgeoftheepithermalsystemoratthelatestageofepithermalsystemevolution.Therefore,laumontitizationcanbeusedasanexplorationindicatorofepithermalgolddeposits.ThefluidsresponsibleforlaumontitizationintheAxigoldorefieldaresimilartothoseproducinghotspring-typegolddepositsorthosefrommoderngeothermalfields.EpithermalmineralizationoftheAxigolddepositwasdatedatCarboniferous,indicatingthattheWestTianshanofChinaisaregionfavorabletoepithermal-typegoldmineralizationandpreservation.HencetheWestTianshanofChinaisatargetareaforexploringepithermalgolddeposits.

简介：Terrestrialfaultedlacustrinebasinisconsideredasafavorableplaceforthedevelopmentofsourcerocks,especiallythefaultbasinsineasternChina.BasedonmolecularcompositionstudyofsaturatedandaromatichydrocarbonsintheextractsofsourcerocksoftheYingchengandShaheziformationsintheLishuFaultDepression,itisrevealedthattheextractsofsourcerocksareprovidedwithlowratioofPr/Ph,lowcontentofC24tetracyclicterpanes,highcontentoftricyclicterpanesandgammacerane,relativelyhighcontentofC27steranesinthesagbeltanditsperiphery;relativelyhighratioofPr/Ph,relativelyhighcontentoftetracyclicterpanesandgammacerane,lowcontentofC27steranesandobviousadvantagesofC29steranesinitsgentleslopebelt;withhighratioofPr/Ph,highcontentofC19,C20tricyclicandC24tetracyclicterpanes,verylowcontentofgammaceraneandC27steranes,andhighcontentofC29steranesintheedgeoffaultdepression.Accordingtotheorganicmatterinputandsedimentaryenvironment,threetypesofsourcerockshavebeenestablished,which,respectively,arethemodeofmixingorganicmatterinputindeepandsemi-deeplake,theadvantageofterrigenousinputinshallowlakeandterrigenousinputinshore-shallowlacustrine.Thefirstmodeissupposedtogenerateoilandgas,whilethesecondonetendstogenerateoil.ThedistributioncharacteristicsofoilandgasintheLishuFaultDepressionareverylikelytobecontrolledbyhydrocarbongeneratingcharacteristicofdifferentsourcerocktypes.

简介：SomeAudepositsinsouthernAnhuiProvincehaverecentlybeenfoundtobecloselyassociatedwithLateMesozoicintrusions.TypicalexamplesincludetheHua-shahAu（Sb）depositandAudepositsatZhaojialing,Wuxi,andLiaojia.InordertounderstandthemechanismsthatledtheformationoftheseAudeposits,wemakedetailedreviewsonthegeologicalcharacteristicsoftheseAudeposits.Specifically,wepresentnewLA-ICP-MSzirconU-Pbdating,alongwithelementalandHfisotopicdatafromtheHuashanAu（Sb）deposit.OurdatasuggeststhattheHuashanore-relatedintrusionswereemplacedduringtheLateJurassicandEarlyCretaceousperiods（144-148Ma）.Theyarecharacterizedbyarc-magmafea-turesandhighoxygenfugacityandarerichininheritedzircons.ZirconU-PbagesandLu-HfisotopesfromintrusionssuggestthatProterozoicjuvenilelithosphereisthemainsourceoftheseintrusions.TheregionalgeologicalhistoryimpliesthatlithospherebeneathsouthernAnhuiwasproducedduringaProterozoicsubductionandwasfertilizedwithAu（Cu）intheprocess.Integratedwiththeresultsofpreviousstudies,weinferredthatLateMesozoicintrusionsformedbytheremeltingofthelithospherecouldprovidethemetalendowmentfortheAu-richdepositsinsouthernAnhui.

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简介：基于确定的数学模型和图形的解释，一个新方法，被用来在一由紫外线光谱技术生产混合很好计算单个地区的生产的贡献，被建立了。标准板用作为X轴作为Y轴和波长人工地提出的样品油的消光系数E被拉。从样品油的紫外分析导致混合的井的曲线被插入到标准板并且比较。在生产混合很好的每个单个地区的比例与接近人工地提出的样品油的曲线的曲线的比例是相同的。在井QHD32-6-3地里，例如并且用这个方法拿A22很好，一个单个地区的生产贡献被计算。Theresult证明Nm4地区是一个主要“贡献者”，Nm4地区的比例是70%，并且Nm1地区的是30%。紫外线光谱技术提供了监视生产贡献的一种新reservoirgeochemical技术，特别为简历降级的重油，而是它有某限制，就取决于GC指纹技术。

简介：REEmobilityduringhydrothermalore-formingprocesseshasbeenextensivelyinvesti-gatedinrecentyearsandthepotentialofREEtoprovideinformationaboutoreformingprocesseshascommonlybeenrecognized.TheDongpinggolddeposit,whichislocatedinnorthwesternHebeiProvince,China,occurringintheinnercontactzoneoftheShuiquangousyenitecomplex,isspatially,andprobablygenetically,relatedtothesyenite.Thedepositwasformedunderthemoderatetohightemperature(220℃to320℃),weaklyacidictoweaklyalkaline,ratherhighfo2(lgfo2=-30～-34)environment.TheREEstudyofthehostrocks,alteredwallrocks,oresandganguemineralsfromthedepositsuggeststhattheREEshavebeenmobilizedanddifferentiatedduringK-feldspathizationandsilicification.TheextremelyalteredsyeniteenvelopingauriferousquartzveinshowspositiveCeanomalyandlargerLREE/HREEratiothanthatoftheunalteredsyenite.TheREEconcentrationsandpatternsoftheoresaredeterminedbytheoretypesandmineralassemblages.LREE/HREEratiosintheganguequartzandhydrothermalK-feldsparsarerelativelylow.Themostsignificantobservationisthattheganguequartzshowssig-nificantpositiveEuanomaly,whereasthehydrothermalK-feldsparsshowlesssignificantornopositiveEuanomalyatallrelativetotheprimaryfeldsparintheunalteredsyenite.ItisevidentthattheREEsaremobileduringK-feldspathizationandsilicificationintheoreformingprocess.WeaktomoderateK-feldspathizationcausedREEmobilitywithoutapparentdifferentiationwiththeexceptionofextremeK-feldspathizationandsilicificationwhichresultedinsignificantdepletionofHREEandEuandrelativeenrichmentofCe.TheREE,Y,U,ThandAucontentsofthesyenitedecreaseasthedegreesofK-feldspathizationandsilicificationoftherocksincreasetowardstheauriferousquartzveins.Astheoresweredepositedunderaratheroxidizedenvironment,Ce4+predominatedoverCe3+.Theprecipitationoftheformerinthefor