简介:TheSinoProbeCenteroftheChinaGeologicalSurveyisageosciencesinnovationcenterfordeepgeologicalsurveysanddeepprocessresearches,whichisalsothenationalbasefordeepexplorationanddeepearthscienceresearchesinChina.Thecenterismainlyfocusedondeepexplorationsoftheearth,deepgeologicalsurveysandfundamentalresearchesondeepearthscience.ThemainmissionsoftheSinoProbeCenteraretoundertakeresearchprogramsondeepearthstructuralandcompositionalexploration,technologyresearchanddevelopmentondeepearthexploration,exploitationandevaluationofdeepoilandgas,deepmineralresources,deepgeothermalenergy,andundergroundspace'explorationandutilization.
简介:Tantalite,occurringasintergranulartabularcrystals,wasreportedforthefirsttimeintheSuzhougranite.ElectronmicroprobeanalysesshowthatitisrichinWandTi,withaTa/(Ta+Nb)ratiorangingfrom0.5to0.73andaMn(Mn+Fe)ratiobetween0.20and0.40.ItisstructurallydistinctfromisomorphictapiolitebyaremarkedAgRamanpeakat880cm^-1.TheassociatedzirconisstrikingbysignificantenrichmentofHf,withtheHfO2contentamountingupto35%-40%,ThediscoveryoftantalitesuggeststhattheSuzhougraniteshouldbeclassifiedasaS-typegraniteinsteadofA-typeasconsideredpreviously.
简介:TheGeologicalSurveyofNorway,incooperationwiththeGeologicalSurveysof22othercountriesandundertheaegisoftheCommissionfortheGeologicalMapoftheWorld(CGMW),hascompiledageologicalmapofnorthernEuropeatthe1:4millionscale.Forthefirsttimethegeologyofbothlandandseaareasofthislargeregionisdisplayedinasingledocument.Theareacoveredextends
简介:ThepresenceofthereversalsofthegeomagneticfieldwithintheBrunhesisindicatedbypaleomagneticstuidesonCenozoicvolcanicrocksintheLeizhouPeninsula,loessstrataandQuaternarymarinesedimentsinthePearlRiverMouthbasininChina.Theseregionalreversalsoccuredat0.58±0.13Ma,0.45Maand0.47—0.48MarespectivelyaccordingtotheresultsofK-Arisotopicdatingandclimatostratigraphicandbiostratigraphicanalyses.ThereversalsequivalenttotheEmperorEventissuggested.ThereversalsrevealedindifferentregionswithvariouslithologiccharactersinChinaprovethattheEmperorEventisaglobalreversaleventratherthanageomagneticexcursion,anditsconfirmationwillpermitaprecisedefinitionoftheMiddle/LatePleistoceneboundary.
简介:Thepaperdealswiththegeologicalsetting,historyandsubsidenceoftheVenetianPlain.MajorattentionispaidtothePleistocene-HolocenestratigraphicsequenceintheLagoonofVenice,inrelationtoitsoriginthatdatesbackto6-7kyrBP.Geologicallandsubsidence,whichplayedanimportantroleintheoriginandtheevolutionofthelagoon,andanthropogenicsubsidence,thathasrecentlyassumedamajorimportancefortheVenetianenvironment,arediscussed.Consideringalsothesealevelrise,23cmlossinlandelevationhasoccurredinthelastcentury,leadingtoincreasedfloodingeventsandenvironmentalproblemsthatrequireprotectiveworks.
简介:Thewormgeologicalcommunityowesthe2ndInternationalGeologicalCongress(IGC)Bologna1881(i)theestablishmentofacommondisciplinarylanguage;(ii)agreementonthebasicchronostratigraphicalandchronologicalclassificationandnomenclature;(iii)agreementonthebasicprinciplesfornamingthefossilorganismsfollowingthebinomialnomenclatureandthepriorityrulestartingwithLinnaeus'SystemaNaturae(1776edition);(iv)theestablishmentofpermanentinternationalbodiesliketheInternationalCommissiononNomenclature,whichevolvedintothepresentInternationalCommissiononStratigraphy(ICS),andtheCommitteefortheGeologicalMapofEurope,evolvedtothepresentCommissionfortheGeologicalMapoftheWorld(CGMW);(v)theintroductionofaGeologicalExhibition(thepresentGeoexpo)intimatelyrelatedtotheIGC;(vi)thefirstorganizationofpost-CongressfieldtripsrelatedtotheCongressactivity;(vii)thefreedistributionofpublicationsandmapsspeciallypreparedfortheCongressmembers.ItalyowestheBolognaIGCthefoundationoftheSocietaGeologicaItalianawhichobtainedonsiteimmediateinternationalsubscription.BolognaowesitsIGCtotheopeningofthelafgeGeologicalMuseum(laternamedafterGiovanniCapellini,Chairmanofthe2ndIGC)andthearchaeologicalMuseoCivico.Suchanimpressiveseriesofresultswaspossiblethroughthe“spiritofco-operation”seededatthe1stParisIGC,thetimelyandenthusiastic"organizationaleffortsofCapellini,hisextensivenetworkofforeigncorrespondents,andhissmoothchairmanshipofthesessions.ablyassistedbyQuintinoSella,ThomasSterryHunt,EugeneRenevier,FrancoisFontannes,AugusteDaubreeandJamesHall.Paradoxically,thesuccessandfutureprosperityoftheIGCs,bothbeforeandaftertheestablishmentoftheInternationalUnionofGeologicalSciences(IUGS),wereenhancedbythelimitedgoals,mostlyfocusedontheestablishmentofformalconventions.ItisarguedthattheIGCmustmaintainitsiden
简介:ThickenedheavyoilsinChinaaregeneticallycharacteristicofcontinenta.Astotheirphysico-chemicalproperties,theseoilsareveryhighinviscosityandlowinsulphurandtraceelementcon-tents.Inthegroupconstituents,theconcentrationsofnon-hydrocarbonsandasphalteneareveryhighbutthoseofsaturatedhydrocarbonsandaromaticsareverylow.Thegaschromatogramsofalkanesshowthattheseheavyoilshavehighabundancesofiso-alkanesandcyclichydrocarbons.Inallthesteroidsandterpenoids,bicyclicsesquiterpenoids,tricyclicditerpenoids,re-arrangedsteranesandgammaceranearestronglybildegradation-resistent.Theformationofheavyoilreservoirsiscontrolledmainlybylatebasinascendance,biodegradation,flushingbymeteoricwaterandoxidationintheoil-bearingformations.Ac-cordingtotheirformationmechanisms,heavyoilreservoirscanbeclassifiedasfourcategories:weatheringanddenudation,marginaloxidation,secondarymigrationandthickeningofbottomwater.Spacially,heavythickoilreservoirsaredistributedregularly:theyusuallyshowsomeparageneticrelationshipswithnormaloilreservoirs.Heavyoilreservoirsoftenoccurinstructuralhighsorinoverlyingyoungerstrata.Theirburialdepthisabout200m.Horizontally,mostofthemaredistributedonthemarginsofbasinsordepressions.
简介:TheFirstInternationalConferenceonGeoparkswasheldinBeijing,ChinainJune2004.AtthatconferencewewereimmersedintheUNESCOconceptofGeoparksforthefirsttime,AsNorthAmericans,wetakeforgrantednational.provincialandstateparkswhicharescatteredthroughoutthecontinentandproviderecreationalandeducationalopportunities.
简介:Marius山是月亮的靠近的一边上的一个暴烈的高原。它具有为它暴烈的特征的高集中的大兴趣,包括屋顶,锥,山脉,和rilles。然而,这个高原的词法、按年代先后的特征很好没由于早使命数据的低分辨率被学习。这研究在月亮的侦察Orbiter(LRO)(0.5m/pix)上在Selene-1(10m/pix)和狭窄的角度照相机(NAC)上用地面照相机(TC)的最近的高空间的分辨率图象描述暴烈的特征的详细形态学。我们这里报导象熔岩试管的天窗和残余那样的一些新结构。我们与ClementineUVVIS数据划分了幽灵似地同质的区域并且在每光谱的联合起来与月亮的Orbiter(LO)IV和TC图象做了坑尺寸频率分发(CSFD)大小。我们首先报导1.10的绝对模型年龄为Marius暗岩1的Ga,为Flamsteed暗岩的1.49Ga,和为Schiaparelli的1.46Ga暗岩。另外,我们识别了几个更年轻的熔岩事件:他们是Marius暗岩2(814妈),媒介到低钛暗岩(949妈),和无差别的中等的钛暗岩(687妈)。最后,我们为Marius山的形成建议一种披风羽毛情形,它能解决以前的模型的矛盾。
简介:VarioustypesofgeologicalhazardsexistintheSouthChinaSea.Indynamicssense,theycanbecategorizedinto5principalgenetictypesrelatedtoeffectsofhydraulicdynamics,gaseousactivity,soilmechanics,gravityandtectonism,respectively.Integratedanalysesindicatethatthegeologicalhazardsassociatedwithvolcanoes,earthquakesandfracturesaremainlydistributedintectonicallyactiveregions,whereasthoseresultingfrommudflows,landslidesanddiapirsareusuallyconcentratedintheregionofslope,thatshallowgas,highpressuregaspocketsandsoftintercalationsaremajorpotentialgeologicalhazardsintheinnershelf,andthatstronghydraulicdynamics,especiallystormtide,isoneofthemajorcausesofgeologicalhazardsinthelittoralareas.ThegeologicalhazardsthatoccurredintheSouthChinaSeaarealsocharacterizedbyperiodicity,successionand,toacertainextent,unpredictabilityinadditiontoregionalization.
简介:在家和国外的地质的遗产保护和它的发展从单个保护在方面反映进步到在保护和利用之间的协作。联合国教科文组织建立的geopark仔细把地质的遗产的保护与本地经济的持续开发的提升相结合,它成为了最好的方法保护地质的遗产。在Xinjiang的地质的遗产,中国,被他们的大数量,富有的变化和高等级描绘。在Xinjiang的复杂地质似地球形状的环境贡献各种各样的地质的遗产类型和他们的空间分发的创造,并且同时在控制下面做他们。在Xinjiang的地质的遗产的主要类型是地质似地球形状的风景和水风景。空间分发能被划分成五个地质的遗产区域:Altay,Junggar,Tianshan,Tarim和Kunlun-Altun,Tianshan和Kunlun-Altun在之中是很重要的。在Xinjiang基于地质的遗产的第一系统的调查,在保护和利用之间的不够的协作是为在地质的遗产保护的向后的状况的主要原因,这被证实。解决这个问题,这份报纸建议决定保护类型的6主要保护步从,保护形式,保护模式,保护等级,保护序列到决定保护地区,向前带这个想法最佳选择它与地质的遗产保护区域和另外的保护区域以及5个相应模式集成geoparks,并且在Xinjia为209重要地质的遗产做一张保护和利用储备表