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。

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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.

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简介：本文介绍了地籍信息系统建设应达到的目标,地籍信息系统的结构、特点以及建设的目标和建设过程中应注意的问题.

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：位于天山北部准噶尔盆地古尔班通古特沙漠西南部的艾比湖洼地。地理位置在北纬44°50′～45°05′,东经83°20′～84°07′。保护区地处塔城地区的乌苏市和博尔塔拉蒙古自治州的精河县境内,下设乌苏和精河两个管理站。保护区总面积546.6km~2。该保护

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简介：2004年2月13日联合国教科文组织评选出首批28处世界地质公园,我国安徽黄山、江西庐山、河南云台山、云南石林、广东丹霞、黑龙江五大连池、河南嵩山等八家地质公园名列其中。其中黄山成为全球少有的同时拥有世界文化、自然双遗产和世界地质公同三顶桂冠的世界名山。举世闻名的风景名山黄山是地质作用造化而形成的奇山,是独特的地质遗迹,是一座天然地质博物馆。建立黄山世界地质公园使人们在游览大自然美景的同时,也了解黄山的形成和演化,增长科学知识,激发科学探索精神,淡化地质现象的神

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

简介：笔者近期在查阅有关川西南地区地层资料时，发现过去有不少内部或公开出版的书刊和专著中，在记述川西南前震旦系群、组一级地层单位的命名与沿革时，有一些“张冠李戴”的现象，特就所掌握资料作一简要介绍。

简介：低矮山区的二级公路两侧常常发生小规模滑坡和崩塌,造成水土和植被流失,同时破坏生态环境景观,但由于地质条件的复杂性和资金限制,所以这类滑坡治理和生态恢复都非常不易,本文从分析小型滑坡类型出发,结合目前高速公路边坡治理和生态恢复的经验,提出治理二级公路小型滑坡及生态恢复建议.

简介：全国第二次土地调查于2007年下半年启动，2009年完成，安徽省于2008年4月率先启动了芜湖县的试点工作，并自行购买了ALOS1B1级数据制作DOM，套合上矢量的原始土地利用现状图，以便于外业调绘的全面开展。下面，是笔者对利用ALOS1B1级数据制作正射影像图以及外业调绘用图的方法进行了探讨，研究发现，此方法易于