简介：ＤｅｐｏｓｉｔｉｏｎａｌＥｎｖｉｒｏｎｍｅｎｔｓｏｆＢｅｄｄｅｄＣｈｅｎｓｉｎＷｅｓｔｅｒｎＹｕｎｎａｎＳｅｇｍｅｎｔｏｆＰａｌｅｏ－Ｔｅｔｈｙｓ，Ｃｈｉｎａ：ａＧｅｏｃｈｅｍｉｃａｌＡｐｐｒｏａｃｈ￥ＨｅＦｕａｌａｎｇ；ＺｈｏｎｇＤａｉａｉ（Ｌａｂ...

简介：<正>THERELATIONSBETWEENDEEPDYNAMICPROCESSANDTHEFORMATIONOFOIL-GASPOOLSINTHESONGLIAOBASIN,CHINALiZhi’an(ChangshaInstituteofGeotectonics,AcademiaSinica,Changsha,410013,Hunan,China)Songliaobasin,cruststructure,deepdynamics,theformationofoil-gaspoolsThisessaydealsindetailwiththeinhomogeneityofthecruststructureandthevariationoftheMoho,theprocessofdeepdynamicsandalsorelationsofdeepdynamicprocesstotheformationofoil-gaspoolsinSongliaoBasin.

简介：Problemssuchasbasintypeandtectonicsettinginwhichoriginalmagmawasgenerated,etc.arediscussedinthispapcrinconnectionwithsedimcntationintheHailarJurassic-Cretaeeouscoal-bcaringbasin,characteristicsofboundingfau1tsandpetrochemica1charactecristicsofvo1canics’BascdonMesozoicstratigraphicaldataandstructural

简介：在从theZhongtiao山的南部的Sushui建筑群的Paleoproterozoic钾的granitoids产出1968-1944妈的虾锆石U-Pb年龄。Lithologically，potassicgranitoid系列由monzodiorite，石英二长岩和syenogranite主要组成。他们的痕量元素和Sm-Nd同位素特征显示他们从太古代的TTG岩石的部分融化在被导出一过去变厚的大陆地壳。这钾的granitoidseries的岩石成因论在thePaleoproterozoic在Trans北方中国造山带以内暗示collisional环境，它支持东方、西方的大陆块在Paleoproterozoic正在被混合的一个构造模型。

简介：<正>1IntroductionMostoftheworldwellknowpotashminesaredepositedinmarineenvironment.Regardingtheseriouspotashshortage,nosignificantprogresshasbeenmadeinmarinepotashinChina,whiletheterrestrialpotash

简介：TheEastTianshanisaremoteGobiarealocatedineasternXinjiang,northwesternChina.Inthepastseveralyears,anumberofgold,porphyrycopper,andFe(-Cu)andCu-Ag-Pb-Znskarndepositshavebeendiscoveredthereandareattractingexplorationinterest.TheEastTianshanislocatedbetweentheJunggarblocktothenorthandearlyPaleozoicterranesoftheMiddleTianshantothesouth.ItispartofaHercynianorogenwiththreedistinctE-W-trendingtectonicbelts:theDevonian-EarlyCarboniferousTousuquan-DananhuislandarconthenorthandtheCarboniferousAqishan-Yamansuriftbasintothesouth,whichareseparatedbyrocksoftheKanggurtagshearzone.Theporphyrydeposits,datedat322Ma,arerelatedtothelateevolutionarystagesofasubduction-relatedoceanicorcontinentalmarginarc.Incontrast,theskarn,gold,andmagmaticNi-Cudepositsareassociatedwithpost-colli-sionaltectonicsatca.290-270Ma.TheseLateCarboniferous-EarlyPermiandepositsareassociatedwithlarge-scaleemplacementanderuptionofmagmaspossiblycausedbylithospheredelaminationandriftingwithintheEastTianshan.

简介：Tectonismisofextremeimportancetosequencestratigraphicpatternsincontinentalsedimentarybasins,affectingboththearchitecturesandinternalmakeupofsequences.SequencestratigraphicframeworkofthePaleogenesystemintheFushansag,northernSouthChinaSea,wasbuiltusing3Dand2Dseismicdata,complementedbydrillingcoresandwelllogsdata.Onefirst-order,threesecond-orderandseventhird-ordersequenceswereidentified.Analysisofpaleotectonicstressfield,unconformitiesandsubsidencehistoryshowedthatthePaleogenetectonicevolutionpresentedsignificantcharacteristicsofmultistageandepisode,andcanbedividedintothreestages:riftingstageI(initialriftingperiod),riftingstageII(rapidsubsidenceperiod),riftingstageIII(fault-depresseddiversionaryperiod).Partitionofthewestandeastintectonicactivitywasobvious.Thewestareashowedrelativelystrongertectonicactivitythantheeastarea,especiallyduringtheriftingstageII.Episodicriftingandlateralvariationsintectonicactivityresultedinawidevarietyofstructuralslopebreakbelts,whichcontrolledboththesequencearchitecturesandintervalmakeup,andstronglyconstrainedthedevelopmentofspecialfacieszonesorsandbodiesthattendedtoformhydrocarbonaccumulation.ThispaperclassifiesthegenetictypesofslopebreakbeltsandtheirrelevantsequencestratigraphicpatternswithintheFushansag,andfurtherdiscussesthetectonicevolutioncontrolsonsequencestratigraphicpatterns,whichsuggeststhatverticalevolutionpathsofstructuralslopebreakbeltsandrelevantsequencestratigraphicpatternsasaresponsetothePaleogenetectonicevolutionwerestronglycontrolledbysagmargintypesandlateralvariationsoftectonicactivity.

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简介：3Dstructureofthecrustanduppermantleinthestudiedareahasbeenanalyzedfromsurfacewavetomography.Thevelocitydistributionintheuppermostcrustissymmetricalontwosidesofthecentrallineofthesea,andcoincideswiththestructureofcrystallinebasement.TheessentialdifferenceintectonicsbetweentheEastChinaSeaandtheYellowSeamainlyliesinthatthevelocitystructuresoftheirlowercrustanduppermantleareidenticaltothoseofSouthChinaandNorthChinarespectively.Intheuppermantlethereexistsahigh-velocityzonewithanearlyEWstrikefromtheHangzhouBay,China,totheTokaraChannel,Japan,alongaboutthelatitudeof30°N.ItisfoundthatbetweentheEastChinaSeaandtheYellowSeatherearesystematicaldifferencesingeomorphology,geology,seismicity,heatflow,qualityfactorandgravityandaeromagneticanomalies,whichisrelatedtobothleft-lateralsheardislocationandright-lateraltearoftheBenioffzonefromtheHangzhouBaytotheTokaraChannel.ItisinferredthattheEastChinaSeawasformedbyCenozoicback-arcextension.TheboundarybetweentheNorthChinaandSouthChinacrustalblocksstretchesalongthesouthernpiedmontofMts.Daba-Dabie-HangzhouBay-TokaraChannel,andthesubductionzoneattheOkinawatrenchistheeasternboundaryoftheSouthChinacrustalblock.ThemovementsofthePacificplate,IndianplateanduppermantleratherthanthePhilippineplatesubductionhaveplayedadominantroleforthemoderntectonicmovementsinEastAsia.

简介：<正>THECHARACTERISTICSANDMODELLINGEXPERIMENTSONTHEDEPOSIT-CONTROLLINGSTRUCTUREOFSHEAR-ZONEGOLDDEPOSITINCHINAWuXueyi(InstituteofGeochemistry,AcademiaSinica,Guiyang,550002,China)shearzone,gold-controlledstructure,modellingexperimentTheshear-zonegolddepositsfoundinChinacanbedividedintofourtypes:(1)golddepositscontrolledbytheductileshear-zones;(2)golddepositscontrolledbythebrittle-ductileshearzones;(3)golddepositsconntrolledbytheductile-brittleshearzones;(4)golddepositscontrolledbythebrittleshearzones.Thesegolddepositsmostlyoccurredintheregionswithhigherabundanceofgold,whichunderwentalongandcomplicatedevolution-aryprocessandhadobviouszoningandmultiperiodmetallogenicfeature.Themodellingexper-imentalresultofgold-controlledstructureshowsthatthethermodynamicsofcompresso-shearstructuresmadegoldmobilizingandmigratingintheearlierstageofshearzone;andthattheextensionprocessdidmetall

简介：<正>1.MaterialcompositionofthegeosynclinaltectonicLayerThegeosynclinaltectoniclayerismainlycomposedofthefollowingtwoparts:sandyslaterocksofPrecambrinandvolcanicrocksinbededwithinthesand-slaterocks.Thesandy-slaterocksembracethechemicalcompositionalcharacteristicsoflightmetamorphicrocks:SiO2=54.5681.63（Wt%）,withaverageof63.96（wt%）（n=58,thesameasfollowing）;Al2O3=9.4717.75（wt%）,withaverageof15.36（wt%）,andAl2O3>K2O+Na2O+CaO;thecontentof（FeO+Fe2O3）variesgreatlywithFeO>Fe2O3;（CaO+MgO）=0.789.22（wt%）withaverageof23（wt%）,andMgO>CaO;theratiosofK2O/Na2Orangfrom2to4（>1）.Bycomparingallthischemicaldatawiththatoftheotherkindrocks,Wecanknowthatthesandy-slaterocksweretheeunicand/orbathyalsedimentswhichformedunderthestronglyactiveeugeosynclinaltectonicsetting.

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简介：WeiheGraben是在中国而且一个重要活跃地震地区的重要新生代差错盆不仅。Huashan山麓差错是WeiheGraben的东南方面上的一个重要活跃差错并且自从新生代，是高度活跃的。1556的著名大Huaxian县地震发生在Huashan山麓差错上。这地震，夺走约830000个人的生活，是知道发生在一个高角度的正常差错上的很少大地震之一。Huashan山麓差错是能被用来学习构造活动和联系危险的一个典型活跃正常差错。在这研究，类型和特征，沿着这个差错的近来第四级的变丑从地质的调查，历史的研究和全面分析被讨论。根据它的特征和活动，差错能被划分成三节，也就是东方、中央、西方。东方、西方的节显示正常滑倒。强烈变丑沿着二节发生了在期间第四级；然而，没有变丑发生在Holocene期间。中央节经历了重要高角度的正常差错活动在期间第四级，包括Holocene。由差错的Holocene冲积扇子和黄土切割沿着Huashan山麓差错地区的中央节在Huashan山的许多溪流山谷的嘴被识别了。Huashan山麓差错的三节，中央节是最活跃并且是很活跃的在期间晚第四级。正常蘸滑倒的率是1.67-2.71牯慧楮?慷汬摥洠捩潲潦獳汩?潣獮獩楴杮漠?楦慬敭瑮畯?祣湡扯捡整楲?愠杬污挠敯潮楢?湡?捡湡桴浯牯桰捩愠牣瑩牡档栠癡?敢湥搠'覜蠝Ｕ?牦浯渠湯'蹜T敲畯?汣祡瑳湯獥愠摮洠摵瑳湯獥漠?桴?敐灰牥?畯瑮楡獮匠慨敬?牯慭楴湯????氠'椰嫇?瑩?瑳慲潴祴数愠敲?湩琠敨倠灥数?潍湵慴湩?眠楨档愠敲瀠牡?景琠敨?汯?牃獯?潍湵慴湩?湩倠汯湡吗？

简介：InMayandJulyof2017,ChinaGeologicalSurvey(CGS),andGuangzhouMarineGeologicalSurvey(GMGS)carriedoutaproductiontestofgashydrateintheShenhuareaoftheSouthChinaSeaandacquiredabreakthroughoftwomonthscontinuousgasproductionandnearly3.1×10^5m^3ofproduction.ThegashydratereservoirintheShenhuareaofChina,ismainlycomposedoffine-grainedclaysiltwithlowpermeability,andverydifficultforexploitation,whichisverydifferentfromthosediscoveredintheUSA,andCanada(bothareconglomerate),Japan(generally,coarsesand)andIndia(fracture-filledgashydrate).Basedon3Dseismicdatapreserved-amplitudeprocessingandfineimaging,combinedwithlogging-while-drilling(LWD)andcoreanalysisdata,thispaperdiscussestheidentificationandreservoircharacterizationofgashydrateorebodiesintheShenhuproductiontestarea.Wealsodescribethedistributioncharacteristicsofthegashydratedepositsandprovidedreliabledatasupportfortheoptimizationoftheproductionwelllocation.ThroughBSRfeaturerecognition,seismicattributeanalysis,modelbasedseismicinversionandgashydratereservoircharacterization,thispaperdescribestworelativelyindependentgashydrateorebodiesintheShenhuarea,whicharedistributedinthenorth-southstripandtendtobethickerinthemiddleandthinnerattheedge.Theeffectivethicknessofoneorebodyisbiggerbutthedistributionareaisrelativelysmall.ThemodelcalculationresultsshowthatthedistributionareaofthegashydrateorebodycontrolledbyW18/W19isabout11.24km^2,withanaveragethicknessof19mandamaximumthicknessof39m,andthedistributionareaofthegashydrateorebodycontrolledbyW11/W17isabout6.42km^2,withanaveragethicknessof26mandamaximumthicknessof90m.

简介：摘要：石块蜻蜓的三新种在家庭Campterophlebiidae把Nel，黄和林分到Sinokaratawia，即S。daohugouicasp。nov，S。magicasp。nov。并且S。gloriosasp。男S的nov，和新材料。prokopiNel，黄和林，2007从Daohugou的中间的侏罗记被描述，内部蒙古，中国。类Sinokaratawia的修正诊断被建议。

简介：ＲｅｃｏｇｎｉｔｉｏｎｏｆＯｐｈｉｏｌｉｔｅＢｅｌｔａｎｄＧｒａｎｕｌｉｔｅｉｎＮｏｒｔｈｅｒｎＡｒｅａｏｆＭｉａｎ－Ｌｕｅ，ＳｏｕｔｈｅｒｎＱｉｎｌｉｎｇ，ＣｈｉｎａａｎｄＴｈｅｉｒＩｍｐｌｉｃａｔｉｏｎ￥ＸｕＪｉｆｅｎｇ（Ｄｅｐａｒｔｍｅｎｔｏｆ...

简介：<正>EastHunananditsadjacentareaisdefinedasanintraplateorogeniczonewithhelpofnewtheoryofgeologyandmulti-disciplineresearch.Theevolutionarystages,deepstructrue,geologicalfeature,rotationstrainandmetallogenyofNW-strikingtransferfaultzonearealsodiscussed.NE-trendingstrike-slipfaultzone,asawhole,enteredactionduringPacificmovementandunderwent3stages:thestrike-slipshear,thepull-apartextensionandthe’compressivethrust.Theaurthorsstudiedmacro-andmicroscopicfeaturesofstrike-slipfaultanditscontrolofuraniummineralizationatJinguangchungdepositbymeansofmodernstructureanalysis,micro-submicroscopicinvestigationandgeophysicalmeasurement.

简介：Thedepthwastraditionallyestimatedbythepressurevaluederivedfrominclusionormineralmea-surement,andtbepres8urc,ingeneralthinking,causeddirectlybygravityofoverlyingrock.Thepressuremeasuremcntsofthcvertica1andhorizontalsy8temsatXishan,Linglong,sbowthatthevcrtica1pressuregradientisuptollMPal/loom,buttbeto

简介：AnalvarezsauriddinosaurskeletonwasdiscoveredfromtheLateCretaceousQiupaFormationofLuanchuan,HenanProvinceofeenttralChina.ItrepresentsanewalvarezsauriddinosaurQiupanykuszhangigen.etsp.nov.AphylogeneticanalysisrecoversQiupanykusnestedwithintheunresolvedclade,whichincludesAsianandnorthAmericantaxa.Theskeletonofthenewspecimenispreservedinassociationwitheggshells.Theeggshellmorphologiesshowthattheseeggsbelongtooviraptorideggs,skeletalremainsofwhichwerediscoveredfromthesamearea.Thealvarezsauridskeletonassociatedwitheggshellfragmentsmayindicatethattheseeggswerebrokenbythestrongthumb-clawsoftheformerandthatalvarezsauriddinosaursmaybeegg-eaters.

简介：Lanping-SimaoMesozoic-CenozoicdiwabasinisoneoftheimportantpolymetallicmetallogeneticbeltsinSanjiangarcaUptonow,morethan20mediumandsmall-sizedcopperdepositsand200cop-perorespotshavebeendiscoveredinred-beds(alittleofthemoccurredinPaleozoiestrata).TheymightbeclassificdintothreeorigintyPcs:scdimentary-d