简介：Remnantoceanbasinisakeytounderstandtheplatesuturingandsubsequentupliftanderosionoforogen.TheBayofBengalBasin(BOBB)providesatypicalexampletoanalyzetheremnantoceanbasinstructures,evolution,andrelationshipsbetweendepositionalfillingandupliftingoftheHimalayanOrogen.Thirty-nineseismicprofilesaswellasintervalvelocitiesofwellBODC3wereusedtocompileisopachmapsofthebasin.Amongtheseismicdata,26seismicprofileswereappliedtoestablish8crosssections.Thecrosssectionssuggestthebasinisasymmetric,boundedtothewestbytheeasterncontinentalmarginofIndia(ECMI)withgraben-horstandtotheeastbytheSundaconvergencemargindominatedbytrench-arcsystem.TheBOBBischaracterizedbyaprominentdownflexurestructurescausedbyhugeamountofBengalfanturbiditesedimentsaccumulation.OurisopachmapsandchronologydatacollectedfromadjacentregionsrevealtheinitialdevelopmentandfastsouthwardgrowthoftheBengalfanwererelatedtotheearlyandmajorstageupliftanderosionoftheHimalayanOrogen,respectively.TheBOBBhasexperiencedacriticaltransitionfromanoceanbasintoaremnantoceanbasinatLateOligocene.SuchbasinstructuresandevolutionfeaturesindicatetheBOBBprovideswholerecordsofobliqueconvergenceoftheIndiaandAsiaplates,andtheearlyandmajorstageevolutionoftheHimalayanOrogen.

简介：DinggyeliesinthemiddlepartoftheHimalayanOrogen.AlotoflowangleextensiondetachmentfaultshavebeendevelopedinDinggyeareaandsomeofthemmakeupthemainbodyoftheSouthTibetDetachmentSystem.Onthewhole,theextensiondirectionofallthedetachmentfaultsisperpendiculartothestrikeoftheHimalayanOrogen.Eachdetachmentfaulthasitsdistinctcharacteristics.Mylonitewasextensivelydevelopedinthedetachmentfaultsandcanbedividedintoavarietyoftypessuchassiliceousmylonite,felsicmylonite,granitemylonite,protomylonite,crystallizationmyloniteandsoon.Onthebasisofourfieldsurveyworks,thesedetachmentfaultscanbeclassifiedaccordingtotheirlocationsintothreeunitslistedasfollows:(1)Inthenorthernpartofthestudyarea,thedetachmentfaultsoccuronlargescaleandinorbicularshape,andformthemiddlelayerofthemetamorphiccorecomplexes.(2)Inthesouthernpartofthestudyarea,thedetachmentfaultsoccurinlinearshapethatisparalleltotheHimalayanOrogenandhasastableattitude,andhaveundergonetwophasesofdevelopment.Inthefirstphase,theRouqiechunGrouprockswereformedandmakeupthehangingwall,whileinthesecondphasetheJiachunGrouprockswereformedandmakeupthehangingwall.(3)Inthesoutheastempartofthestudyarea,thedetachmentfaultsstrikenearlyalongsoutheastdirectioninastablewayandsomeofthesedetachmentfaultsweredistortedbythelate-formedfaultsandfolds.Furthermore,inthesouthwesternpartofthestudyarea,theductileshearzonesareparalleltothedetachmentfaults.

简介：<正>ANALYSISONTECTONICSETTINGOFBASINFORMATIONANDITSSIGNIFICANCEINBASINMODELLINGChenYongsheng(AdministrativeBureauofDaqingOilField,Daqing,163003,Heilongjiang,China)LiZhi’an(ChangshaInstituteofGeotectonics,AcademiaSinica,Changsha,410013,Hunan,China)basinformation,tectonicsetting,basinmodellingFromtheviewpointsofprogressivedevelopmentoftheearth’scrust,thispa-perexpoundsthecomplexityofformingprocessesofoil-gaspoolsinbasins,andanalysestheweaknessanddefectsofcurrentresearchesonbasinmodelling.Theauthorsemphasizethesig-nificanceofanalysisontectonicsettingofbasinsformationonbasinmodelling,andputforwardsomebasicprinciplesandmethodsforestablishingmodelsoffivehistoriesofbasins.

简介：TheJiangshan-Shaoxingfracturebelt(JSFB)isaLateProterozoicgeosutureduetoislandarc-continentcollisioninSouthChina,TheCathaysianBlock(CT),lyingonthesoutheastsideofJSFB,iscomposedofgreenschist-amphibolitecomplexesintheformofaseriesoftectonicflakes.OnthenorthwestsideofJSFB,whichislocatedintheborderareaofZheijiang,JiangxiandAhhhiprovinces(abbreviatedasZJP-JXP-AHP),aredistrbutedandophiolitesuiteandotherrocks,constitutingtheJiangnanancientislandarc(JN)onthesoutheastmarginoftheYangtzeBlock(YZ).ThecollisionbetweenJNandCTat-0.9GaagoledtothefoldingofJN.followedbytheintrusion(-0.9-0.8Gaago)ofmanydioriticandultramaficstitchingplutonsalongthefracturebelt.Asaresult,thebasicPrecambriantectonicframeworkofsoutheasternChinawasshaped.

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简介：ＭｅｓｏｚｏｉｃＶｏｌｃａｎｉｓｍＳｕｒｏｕｎｄｉｎｇＳｏｎｇｌｉａｏＢａｓｉｎ，Ｃｈｉｎａ：ＩｍｐｌｉｃａｔｉｏｎｆｏｒｔｈｅＲｅｌａｔｉｏｎｓｈｉｐｗｉｔｈＥｖｏｌｕｔｉｏｎｏｆＢａｓｉｎ＊ＬｕＦｅｎｇｘｉａｎｇＺｈｕＱｉｎｗｅｎＬｉＳｉｔｉａｎ...

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简介：这研究使用了2D在Huizhou亚盆调查差错的新生代进化的地震侧面。它试图通过描述分析他们的活动的差错和份量上的几何特征定义盆结构风格。结果显示边界在计划看法在军队飞机安排在Huizhou亚盆显示器指责，它显示那，它被一种倾斜的扩展引起。计算差错滑动表演差错的长期的活动在盆发生了，并且一些边界差错在5.5妈后面保持活跃。差错系统的进化历史被重建。开始，在期间始新世早渐新世，主要，NNE-NE和NWtrending差错和NE惹人注目的grabens和half-grabens在盆形成了，一系列差错系统控制了免职。在期间晚渐新世早中新世，结构的活动是相对弱的，差错活动和差错生长率严厉地减少了。最后，在迟了的阶段从对礼品晚中新世，结构运动被重新激活，并且一些差错也被重新激活。我们的学习将更好帮助在华南海的北边缘理解忍受石油的盆的结构的特征和进化。

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简介：Basinmodelinghasbecomeanimportanttoolforanalyzingsedimentarybasins.TheNorthSubbasinoftheSouthYellowSeaBasinisfilledwiththickMeso-Cenozoicterrigenousdepositsduringtheriftevolutionstage.Theaccumulationofdataandachievementsofgeologicalinvestigationsinrecentyearshaveprovidedthepreconditionsforbasinmodeling.Thenecessaryparametersandgeologicalelementsforsimulationsarecollatedandsummarized.Modelingoftectono-thermalevolutionisperformedandtherelatedtrendinheatflowisreconstructedandcalibrated.Theheatflowvaluecommencesfromanaveragelevelof61mW/m~2duringMiddleLateJurassic,risestoabout80mW/m~2fromcirca145Matocirca74Ma,andthenundergoesagradualdeclineto65mW/m~2untiltheendofOligocene.Threeevolutionaryphases,namely,theinitialriftingphase,syn-riftingphase,andpost-riftingphase,havebeenidentified.ThemodelingresultsshowthattheNorthSubbasingenerallyentersintoastageofstrongriftingduringCretaceousandundergoesrapidsubsidenceuntiltheLateCretaceous,thenfollowsbyastageofmoderateriftingduringthePaleogene.Theinputandgeneralworkflowinvolvedin3-Dmodelingareintroduced.ReconstructionofthepetroleumsystemintheNorthSubbasinrevealsthatthethresholddepthofhydrocarbongenerationislocatednearthetopofthePaleogeneFuningformation,andtheunderlyingJurassicandCretaceoussourcerockshavereachedorexceededpeakoilgenerationandhavealmostcompletedthegenerationandexpulsionofhydrocarbons.ThemaingenerationandexpulsionintheJurassicsourcerockstakeplaceduringthesyn-riftingandpost-riftingphases,whereasthepeakgenerationandexpulsionintheCretaceousandPaleogenesourcerockstakeplaceduringthepost-riftingphase.Althoughthestudyareaisstillarelativelylessexploredsedimentarybasin,theresultsofmodelingcanprovidevaluableinformationforexploration.Apreliminarydiscussionofthemainuncertaintyfactor

简介：GlobalabruptclimatechangefromMarinoansnowballEarthtogreenhouseEarth,recordedascapcar-bonateoverlainondiamictite,hadshedthefirstlightonCambrianbio-radiation.Themostdocumentedcapcar-bonatesectionsaretypicalwithcomprehensiveδ13Cneg-ativevaluesandubiquitoussedimentarystructures,suchastepee-like,sheet-cracketc.,whichareassociatedwithsuccessiveglacialeustaticvariationcausedbyisostaticreboundinshallow-waterfacies.Herewereportadeep-waterbasinalcapcarbonatesectionwithstrongnegativeδ13CvaluesinthesouthernmarginoftheQinlingOrogen,Heyu,ChengkouCounty,ChongqinginChina,whichconsistsofmassivedolostonewithabundantcarbonaceouslaminae.However,itlacksthesedimentarystructureasmentionedaboveandisoverlainbythin-beddedsiliciousshalesandcherts.AK-bentonitebedwasdiscoveredwithinthebaseofcapcarbonates,about0.7mabovethetopoftheMarinoandiamictite.Magmaticzirconsthatweresep-aratedfromtheK-bentonitebedyieldaSIMSconcordiaU-Pbageof634.14-1.9Ma（lσ,MSWDcE=0.31,ProbabilityCE=1.000,n-=20）.TheageisingoodagreementwithpreviouslyreportedTIMSU-PbagesfortheterminationofMarinoanglaciationandprovidesageochronologicalconstraintfortheEdiacaransuccessionsintheQinlingOrogen.

简介：LaiyangformationofJiaolaiBasinisthetargetstratumforoilandgasexploration.Bymeasuringseveralfieldsections,theauthorsfindthatLaiyangformationrevealsthewholeprocessesfromdevelopmenttodeathofthelakebasinanditssedimentaryfaciesdifferindifferentstructurallocations.AnalysesaboutsedimentaryfaciesandpaleocurrentorientationsinassociationwithresearchesaboutthepositivetectonicunitssuchasDayetouhorsebackandChaigouhorstindicatethatLaiyangsagisarelativelyindependentsedimentaryunitthatshowsgreatwaterdepthtypicalofdeeplakeorsemideeplakeandwascontrolledbyWulongcunfaultduringthedepositionperiodofLaiyangformation.ItssedimentsmainlyoriginatedfromJiaobeiupliftareaandDayetouhorseback.Gaomi-Zhuchengsagwasafast-filledbasincontrolledbyWurongfaultandYishufaultzone,beinghighinthenortheastandlowinthenorthwestandcharacterizedbythedevelopmentofpluvialfaciesandfluvialfaciesinmostareas,andwiththedevelopmentoflakefaciesbeinglimitedtolocallow-lyingregions.Selectionofadvantageoushydrocarbonreservoirareasforexplorationpurposemainlyreliesonthesedimentationpatternofprototypebasinandconservationconditions.Thecentral-westareaofLaiyangsagcoveredbyoverlyingLaiyangformationisthemostadvantageousexplorationarea.

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简介：常规时间成像技术不能够生产精确地震成像在Tarim盆的山前面表面下，中国。他们的想象的结构导致了以前钻失败的某专业，忍受他们的结构的闭合有的坏名声车轮和他们的结构的高度有弹簧。这篇文章首先列出成像挑战，并且解释在一图解时间成像技术为什么在这个区域失败。然后通过一系列真实数据例子，当时，它表明那在那里存在侧面的速度变化，深度成像是唯一的答案在这个区域处理成像挑战。为wavefield的复杂性的深度成像报道，因此生产优异、地质的嘴巧的图象。在适当地执行深度成像的核心任务是造速度模型。这篇文章强调一些主要方面在这方面。

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简介：拉萨河盆是西藏的高原上的高山的沼泽地的典型分发区域之一。为监视，保护和利用得到背景的更好的理解和高山的沼泽地的特征是很重要的。在盆的沼泽地建设和分发包括域调查数据，CBERS遥感数据和3S技术提供的另外的题目的数据基于多来源数据被分析。结果是(1)沼泽地的全部的区域是209,322.26hm2，为盆的6.37%全部的陆地区域的财务。沼泽地被自然沼泽地主要统治，与仅仅占据1.09%沼泽地区域的人工的沼泽地；沼泽地沼泽地是自然沼泽地的主要部分，由Kobresialittledalei统治了在河来源区域分布式的沼泽的草地并且Chali，Damshung和Medro在上游Gongkar县。在不同的县的沼泽地的比率和类型显著地不同，它在Chali和Damshung县(为62%全部的沼泽地区域的财务)是广泛地分布式的。(2)沼泽地的集中的垂直分发在36005100m的举起。沼泽地广泛地从河来源在整个YarlungZangbo河山谷被散布到河嘴进YarlungZangbo河。沼泽地沼泽地在来源区域是主导的并且河在上游与湖的马赛克分发，Kobresialittledalei和Carexmoorcroftii沼泽的草地，灌木状的沼泽地和河；至于中间下面流，主要类型是河沼泽地并且充满沼泽地。分发在河，小而淡的Kobresia和Carexmoorcroftii的一个马赛克模式沼泽的草地，Phragmites南极光和辅助的草沼泽地，充满的沼泽地和人工的沼泽地。

简介：ＳｅｉｓｍｉｃａｃｔｉｖｉｔｙａｎｄａｃｔｉｖｅｆａｕｌｔｓｉｎＨｕａｉｌａｉｂａｓｉｎＰＥＩＤＥＷＡＮＧ（王培德）ＹＵＨＯＮＧＴＩＡＮ（田玉红）ＣＨＵＮＬＡＩＬＩ（李春来）ＹＵＮＴＡＩＣＨＥＮ（陈运泰）ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｐｈｙｓ...

简介：ＧｅｏｄｙｎａｍｉｃｓｏｎＦｏｒｍａｔｉｏｎａｎｄＥｖｏｌｕｔｉｏｎｏｆＢｏｈａｉｗａｎＢａｓｉｎ，Ｃｈｉｎａ＊ＺｈａｎｇＳｈｕｌｉｎＴｉａｎＳｈｉｃｈｅｎｇＤｅｐａｒｔｍｅｎｔｏｆＰｅｔｒｏｌｅｕｍＧｅｏｌｏｇｙ，ＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆ...

简介：Ordos盆是在西北的中国的大规模沉积的盆。到顶的从底部的hydrostratigraphic单位是pre寒武纪的变形岩石，更低的古生代的碳酸盐岩石，上面对中生代碎屑状的岩石和新生代存款古生代。全部的厚度直到6000m。三个地下水系统在Ordos盆是在场的，基于地质的设置，即石灰岩地区常见的地形地下水系统，白垩纪碎屑状的地下水系统和第四级的地下水系统。这份报纸系统地描述每个系统的地下水流动模式和对地下水资源的全面评价。

简介：ThepaperdiscussesthedistributionofQuaternarysediments,occurrenceofsalinemineralsandphasesofneotectonicmovementsandtheirmanifestationsintheQaidambasin.TheformationoffoursuccessivelacustrineterracesinTertiaryanticlinalzonesinthewesternpartofthebasinwasrelatedtotheneotectonicmovementsthattookplace100Kaago,andthedistributionofsuchterracesdiscloses,inaway.theevolutionaryhistoryoftheQuaternarysaltlakes.AccordingtothedistributionoftheterracescoupledwiththedistributionofQuaternarysedimentsandfeaturesofsaltdeposition,fourperiodsofQuaternarysaltlakeevolutioninthebasinmaybedistinguished,whichcorrespondtofourstagesofsaltdepositionrespectively.