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简介：Wateristhemostactivecomponentinallgeologicalsystems.Ithasanimportanteffectonthephysicalpropertiesofmineralsandmelts.ItalsoplaysakeyroleintheevolutionoftheEarth.Accuratethermodynamicsdataonwaterarecurrentlyconfinedtopressuresbelow1.0GPaandtemperaturesbelow900℃.PresentedinthispaperarenewdataavailableontheP-Tpropertiesofwateratpressuresupto5.0GPa,develogedfromdifferentialthermalanalysisandultrasonicwaveamplitudeanalysis.Ithasbeenfoundthattheremayexistanotherternarypointat3.0GPaandthatultrasonicwaveamplitudechangeofice-watertransitionshowstwoinflectionpointsabove2.0GPa,consistentwiththetwopeaksofdifferentialthermalcurvesabove2.0GPa.Itmaybeanewphenomenonwhichneedsfurtherstudy.

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简介：Theanalysisofstableisotopesofcarbonandoxygenindifferentcarbonaterocksbythephosphoricacidmethodisnoteasierthanthatbythelasersamplingmethoddevelopedinrecentyears,whichopticallyfocuseslaserbeamswithsufficientenergyonamicroareaofathinsectioninavacuumsampleboxviamicroscope.CO2producedbyheatingdecompositionofcarbonatewaspurifiedbythevacuumsystem,andthestableisotopicvaluesofcarbonandoxygenwerecalculatedandanalyzedonamassspectrometer.Thispaperadoptedthelasermicro-samplingtechniquetoanalyzethestableisotopesofcarbonandoxygenindolomite,carbonatecement,stromatoliteanddifferentformsofdawsonite(donbassite).Resultsindicatedthatthelasermicro-samplingmethodiseffectiveinanalyzingcarbonatecompositionandcouldbeaconvincingproofforjustificationoncarbonatecompositionanalysis.

简介：WithwellsPuguang2and6inthePuguanggasfieldastheresearchobjectsbychoosingorganiccarbonascharacterizationreservoircarbon(indirectlyreflectingthebitumencontents),thispaperdiscussestherelationshipbetweenbitumencontentsandlithologiccharacteristics,reservoircharacteristics,andcalculatesthevolumeofpaleo-oilandoilcrackedgas.Thestudyshowsthattheorganiccarboncontentsofthereservoirsarerelatedtolithologiccharacteristics.Duetovariationsintheparticlesizeorstructureofrocks,theporosityofthereservoirsvaries,furthermore,itwillinfluencethecontentsoforganiccarbon.Andtherelationshipbetweenthesetwoparametersispositive.Basedontheanalysis,therelationshipbetweentotalorganiccarbon(TOC)andthecontentsofreservoirbitumenalsoappearstobepositive.Thevolumeofpaleo-oilandcrackedgasoftheChangxing-Feixian’guanFormationarerespectively495milliontonsand360.4billionm3throughthecalculationofreservoir’sorganiccarbon.Therefore,therelationshipbetweencarbon-bearingrateandcharacteristicsofthereservoirscanbeusedtoindirectlyevaluatereservoirtypes.Besides,thecarbon-bearingrateofthereservoirsalsoreflectsthecontentsofreservoirbitumen,paleo-oilaswellasnaturalgas.Itmakesanewapproachforthestudyofthetypesofreservoirsandtheamountsofpaleo-oilandoilcrackedgasinnortheasternSichuanBasin.

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简介：由中国矿物岩石地球化学学会和中国科学院地球化学研究所联合主办的"西部大开发:资源与环境地球化学"研讨会于2001年7月18日至21日在昆明召开.来自中国科学院、高等院校、石油天然气总公司、国土资源部、有色金属总公司等部门的上百名专家、学者参加了会议.