简介：FollowingtherecommendationoftheInternationalCommissiononStratigraphy(16votesYes[94%],1abstention,2votesnotreceived),theGlobalboundaryStratotypeSectionandPoint(GSSP)forthebaseoftheTuronianStageoftheCretaceousSystemisdefinedasthebaseofbed86oftheBridgeCreekLimestoneMemberoftheGreenhornLimestoneFormationatthewesternendoftheDenverandRioGrandeRailroadcutnearthenorthboundaryofthePuebloReservoirStateParkRecreationArea,westofPueblo,Colorado,USA.ThisGSSPhorizonisalsoexposedandprotectedintheadjacentstaterecreationarea.ItcoincideswiththefirstoccurrenceoftheammoniteWatinocerasdevonense,isinthemiddleofaglobalpositiveexcursioninCarbon-13isotopes,andisbracketedbywidespreadbentonitesthathaveyieldedagesof93to93.5Ma.

简介：“3S”技术在地质找矿中的应用，极大地提高了成矿预测的精度和效益。在新理论、新思路的指导下，通过对已有地质、物探、化探、遥感资料进行二次开发及综合研究分析，应用以遥感技术（“RS”）为主，辅以“G1S”、“GPS”技术和野外现场验证等多源信息手段和方法，进行成矿预测，高效、快速地实现了找矿靶区的预测与定位。

简介：本刊讯（段金平）国土资源部副部长、国家测绘局局长徐德明在全国测绘局长会议作工作报告时指出,2011年国家测绘局重点抓好九方面工作。其中,要着力推进地理信息公共服务平台建设,打造＂天地图＂民族优秀品牌;启动100个以上数字城市建设,使数字城市覆盖全国2/3以上的地级城市。九个方面的工作：一是着力加快构建数字中国,推进地理信息公共服务平台建设,打造＂天地图＂民族优秀品牌。

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简介：TheresistivityexperimentalmeasurementsofcoresamplesdrilledfromlowpermeabilityreservoirsofOrdosBasin,NorthwestChina,illustratethatthecementationfactorsarenotagminate,butvaryfrom1.335to1.749.Thisleadstoachallengefortheestimationofwaterandhydrocarbonsaturation.BasedontheanalysisofPurcellequationandassumptionthatrockresistivityisdeterminedbytheparallelconnectionofnumerouscapillaryresistances,atheoreticalexpressionofcementationfactorintermsofporosityandpermeabilityisestablished.Then,cementationfactorcanbecalculatediftheparametersofporosityandpermeabilityaredetermined.Inthefieldapplication,porositycanbeeasilyobtainedbyconventionallogs.However,itisatoughchallengetoestimatepermeabilityduetothestrongheterogeneityoflowpermeabilityreservoirs.Thus,theSchlumbergerDollResearch(SDR)modelderivedfromNMRlogshasbeenproposedtoestimatepermeability.BasedontheanalysisofthetheoreticalexpressionsofcementationfactorandSDRmodel,anovelcementationfactorpredictionmodel,whichisrelevanttoporosityandlogarithmicmeanofNMRT2spectrum(T2lm),isderived.TheadvantageofthismodelisthatalltheinputinformationcanbeacquiredfromNMRlogsaccurately.Inordertoconfirmthecredibilityofthenovelmodel,theresistivityandcorrespondinglaboratoryNMRmeasurementsof27coresamplesareconducted.Thecredibilityofthemodelisconfirmedbycomparingthepredictedcementationfactorswiththecoreanalyzedresults.Theabsoluteerrorsforallcoresamplesarelowerthan0.071.Oncethismodelisextendedtofieldapplication,theaccuracyofwaterandhydrocarbonsaturationestimationwillbesignificantlyimproved.

简介：ObjectiveThenearlyparallelN–S-trendingriftsinsouthernTibetrepresenttheE–WextensionoftheTibetPlateau.MostdatawhichconstrainedtheageoftheextensionaldeformationcomefromisotopicdatingofthedikesprobablyrelatedtotheactivityofthenearlyN–Sfaultingandmicasfromhydrothermalactivityandthelowtemperaturethermochronologyofplateauuplift.Previous

简介：我们把周围的噪音断层摄影术用于在从76个车站的地区性的网络的2008年1月1日和2008年12月31日之间的地震数据由中国地震管理部署了的连续三部件的宽带。周围的噪音跨关联被执行生产每车站对的草地功能。在从6～50s的时期以内，瑞利和爱波浪分散曲线用多重过滤器分析方法被测量。然后三维(3-D)从表面的S波浪速度结构击倒到70km从瑞利和爱波浪分散结果被转换。获得的S波浪速度地图在学习区域与不同地质、构造的特征显示出强壮的侧面的变化和相互关联很好。四川盆由于厚沉积存款，但是高在浅深度显示低速度在中间降低外壳中的速度；东方西藏的高原清楚地在它与外壳的流动模型建议解释机制一致的mid-to-lower外壳中与一个低速度的地区被展示高举并且为西藏的高原的变丑的模式。同时，我们的结果也展出外壳的厚度从东方西藏的高原减少了到四川盆。

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简介：TightzonesofthegasbearingKanganandDalanformationsoftheSouthParsgasfieldcontainaconsiderableamountofunsweptgasduetotheirlowporosity,lowpermeabilityandisolatedporetypes.Thecurrentstudy,integratescoredata,rockelasticpropertiesand3Dseismicattributestodelineatetightandlow-reservoir-qualityzonesoftheSouthParsgasfield.Inthefirststep,thedynamicreservoirgeomechanicalparameterswerecalculatedbasedonempiricalrelationshipsfromwelllogdata.Thelog-derivedelasticmoduliwerevalidatedwiththeavailablelaboratorymeasurementsofcoredata.CrossplotsbetweenestimatedporosityandelasticparametersbasedonYoung'smodulusindicatethatlowporosityzonecoincidewithhighvaluesofYoung'smodule.Theresultswerevalidatedwithpetrographicstudiesoftheavailablethinsections.Thecoresampleswithlowporosityandpermeabilityarecorrelatedwithstrongrockswithtightmatrixframeworksandhighelasticvalues.Subsequently,rockelasticpropertiesincludingYoung'smodulusandPoisson'sratioalongwithporositywereestimatedbyusingneuralnetworksfromacollectionof3Dpost-stackseismicattributes,suchasacousticimpedance(AI),instantaneousphaseofAIandapparentpolarity.Distinguishinglowreservoirqualityareasinpayzoneswithunsweptgasisthenfacilitatedbylocatinglowporosityandhighelasticmodulusvalues.Anhydritezonesareidentifiedandeliminatedasnon-payzonesduetotheircharacterizationofzeroporosityandhighYoungmodulusvalues.Themethodologydescribedhasapplicationsforunconventionalreservoirsmoregenerally,becauseitisabletodistinguishlowporosityandpermeabilityzonesthatarepotentiallyproductivefromthoseunprospectivezoneswithnegligiblereservoirquality.

简介：采用目前被认为较理想的EASY%Ro动力学模型对四川盆地川合100井进行一维成熟度模拟,并对影响热指标模拟的主要参数进行了敏感性分析.研究表明,古地表温度对模拟结果的影响不大;岩石热导率的影响程度与岩层厚度有关,即厚度越大的地层,其岩石热导率的变化对成熟度模拟的影响越大;对于川西凹陷,60Ma时的古热流值和60～40Ma的剥蚀量对模拟结果影响显著,因此减少这两个参数的不确定性有助于提高该地区成熟度模拟的准确性和可靠性.

简介：ThetransitionzonebetweentheEastAsiaandCentralAsiacrustobodlesisnotonlyadiwaregion,butalsoagigantictectono-metallogenicbeltinAsia.IttrendsN-S,liesbetweenlong.100°-107°Eandlat.14°-62°N,hasalengthof4600kmandfurtherextendssouthwardandnorthward.Themainfeaturesofthebeltareasfollows:(1)Thebc1tcon8istsofotc