简介：Dulaerqiao花岗石在在Erguna山岳和Xingan山岳之间的Xinlin-Xiguitu-Toudaoqiao缝术地区被定位，内部蒙古的东北。岩石主要由K长石，石英，和斜长石组成。这花岗石在晚含碳的时期被扔的锆石LA-ICP-MSU-Pb数据表演(308.7条獥？

简介：SeismicPvelocitystructureisdeterminedfortheupper500kmoftheinnercoreandlowermost200kmoftheoutercorefromdifferentialtraveltimesandamplituderatios.ResultsconfirmtheexistenceofagloballyuniformFregionofreducedPvelocitygradientinthelowermostoutercore,consistentwithironenrichmentneartheboundaryofasolidifyinginnercore.Pvelocityoftheinnercorebetweenthelongitudes45oEand180oE(quasi-EasternHemisphere)isgreaterthanorequaltothatofanAK135-Freferencemodelwhereasthatbetween180oWand45oE(quasi-WesternHemisphere)islessthanthatofthereferencemodel.Observationofthisheterogeneitytoadepthof550kmbelowtheinnercoreandtheexistenceoftransitionsratherthansharpboundariesbetweenquasi-hemispheresfavoreithernoorveryslowinnercoresuperrotationoroscillationswithrespecttothemantle.DegreeoneseismicheterogeneitymaybebestexplainedbyactiveinnercorefreezingbeneaththeequatorialIndianOceandominatingstructureinthequasi-EasternHemisphereandinnercoremeltingbeneathequatorialPacificdominatingstructureinthequasi-WesternHemisphere.Variationsinwaveformsalsosuggesttheexistenceofsmaller-scale(1to100km)heterogeneity.

简介：Inthelastseveralyearssince2004animportantnewfindinghasbeenunveiledbycombinedeffortsduetoJapanese(SatoruTanaka),French(RenaudDeguen,TAlbousierreandMarcMonnereau),AmericanandChinesegeophysicists(XiaodongSongandVernonFCormier)whoemployedfromunambiguousdetailedseismologicalevidenceandexplainedbycleartheoreticalandsoundlaboratoryargumentsdrawnfromfluiddynamicsthatthereexistsastrong

简介：我们进行一个实验调查在在PKP光线路径在中美洲下面取样的内部核心的体积的观察速度坡度的线性是否是柔韧的近似。而不是解决一个优化问题，我们在贝叶斯的推理以内走近它。在模型说明被放松以便的地方，这是一条整体途径而不是仅仅一个答案，一些讲理的模型是可接受的。在贝叶斯的推理这里使用了的transdimensional，而且，基础功能的数字需要为观察建模由自己一未知。我们建模在模型的整体揭示那，很可能是包含仅仅2个节点(线性趋势)的那些。因此，我们的结果认为关于观察坡度在它的性质是不变的披风的其余部分为内部核心旋转的决心使用的假设正当(线性)。在地震学的最近的观察建议在有弹性的参数的空间可变性是在内部核心的普遍现象，是可能的。未来数组观察将进一步抑制速度变化的空间程度和大小并且显示出是否在内部核心的二伪半球的这些观察之间有重要差别。

简介：摘要：不完全的postcranial鸟的骨骼从西方的内部蒙古的Otog旗帜的更低的白垩纪Jingchuan形成被描述并且指了Cathayornis的新种，C。chabuensissp。nov。这是从外面的辽宁省的Cathayornis的第一份报告。新发现显示Cathayornis与Otogornisgenghisi共存了，并且更多详细说明了在Otogornis代表的这二enantiornithine类表演之间的比较一个更原始的类比Cathayornis。我们的分析进一步显示Cathayornis是一只树木的鸟。从这个区域的Cathayornis的发现也证实鸟的忍受石块的Jingchuan形成比得上在西方的辽宁的上面的Jehol组的Jiufotang形成，并且应该被指中间迟了的早白垩纪。

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

简介：砍越过内部核心边界的速度和密度对比为学习深地球动力学，geodynamo和地磁气的进化是必要的。在以前的研究，在短距离和更全体的PKiKP/P的PKiKP/PcP的振幅比率距离被用来抑制shear速度和密度对比，并且砍在最高的内部核心的速度被发现比PREM预言实质地小。这里我们在场PKiKP/P振幅比率的大数据集为80的距离范围在阿拉斯加在ILAR数组在420个地震记录上测量了？？

简介：ThequestionwhethertherehavebeenQuaternaryglaciationsintheDaHingganareahaspuzzledglacialgeologistsformanyyearsbecausenosufficientglacialevidencehasbeenfoundinthisarea.ThestudyofQuaternaryglaciersintheDaHingganareaisalsoakeyissueoftheglaciologyinChinabecauseofthespeciallocationofthisarea.Inthepasttwoyears,alargenumberofcompleteandtypicalglacialvestigeshavebeenfoundinHexigteninthesouthernDaHingganMountains,suchasfossilcirquegroups,horns,knife-edgecrests,terminalmoraines,glacialsteppedstones.Theselandformsarelocatedatawatershed,whicharethusimpossibletobeformedduetotectonicprocesses,waterorweathering,butcanonlybeformedbyglaciation.ThecalculatedflatindexesofthefossilcirquesintheHexigtenare1.7-4.5,4-5and1.3-5,whicharewithintherangeof1.7-5thatistheflatindexofrealcirques.Thetypicalandcompletemoraineshavealsobeenfoundinthisarea.AlltheseglacialvestigesprovethattheQuaternaryglaciersdidexistintheDaHingganMountainsofeasternChina.Thus,itisofimportantscientificsignificancefortheresearchonChinese,eventheglobalclimaticandenvironmentalevolutionsincetheQuaternary.

简介：TheSainUsgolddepositisatypicalauriferoussulphidequartzveindepositintheInnerMongolianaridsteppeclimaticregion.Theoxidationzonehasbeencontrolledbythearidcli-matesincethebeginningoftheHolocene.Goldsupergeneevolutionischaracterizedbyenlarge-mentofgoldgrains,complicationofthegoldform,raisingofthegoldgradeandincreaseofthegoldfineness;besides,goldandsilverhavetwoenrichmentpeaksatthesamedepth,whichisinsharpcontrasttotheunimodalenrichmentofgoldandsilverandtheoccurrenceofgoldaboveandsilverbelowinahumidclimaticregion.Sunpumpingisthemaincauseforthebimodalenrichmentofgoldandsilver.Illite2M1isoneofthemaincausesfortheupperenrichmentpeakofgoldandsilver.

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：BlueschistaccompaniedbypeliticschistexposealongtheXinlin-XiguitufaultintheToudaoqiaoarea,northeasternChina.Inthispaper,theblueschistissystematicallystudiedonthepetrographyandmineralchemistry.Theamphibolesintheblueschistarezonedfromwinchitecoretomagnesioriebeckite/glaucophanerimtowinchiteoutermostrim.Thepeakmetamorphicconditionsaredefinedbythemineralassemblageofmagnesioriebeckite/glaucophane,epidote,high-Siphengite(Si<7.1),chlorite,albite,hematiteandquartz,indicatinganepidote-blueschistfaciesmetamorphism.TheP-TconditionsareestimatedasT=350–400℃andP=10-12kbar.TheoccurrenceoftheblueschistalongtheXinlin-XiguitufaultstronglysuggeststhefaultisthesuturebetweentheErgunandtheXing'anblockssituatedintheeasternportionsoftheCentralAsiaOrogenicBelt(CAOB).

简介：在东方半球的PKP(DF)的变细以同时解释一种思索的关系的多重散布被检验，相应于强壮的变细的一个相对快的速度异例。有一个维的随机的速度变化的反射率synthetics与振幅比率和微分旅行为赤道的路径PKP(Cdiff)-PKP(DF)预定的PKP(DF)/PKP(Cdiff)的观察相比。有5%，6%，和7%的标准差在的P波浪速度变化的Gaussian分布最高内部核心的200km在是比在东方半球的典型结构稍微快的速度结构上被附加，根据仅仅一个维的结构被考虑，它是可能的解释旅行时间和振幅数据。在二的scatterer分发特征、三尺寸的统计数值的进一步的考试被要求获得一个现实主义的结论。

简介：MostofthehinterlandoftheNorthChinaplatformisdevoidofLateOrdovicianstrata.TheBaiyanhuaMountainsectionatShetaiTownisastandardsectionoftheUpperOrdoviciannewlyestablishedinrecentyearsatthenorthernmostmarginoftheplatform.ThisestablishmentdirectlyinvolvedthedeterminationofthenorthboundaryoftheplatformandtheunderstandingofitsevolutionaryListory.TheareaisquitedifferentfromthebinterlandoftheplatforminMiddleOrdovicianrocktypesandsedimentaryenvironments,withtheformercharacterizedbyfrequentslopedepositsandthelatterconsistingalmostentirelyofplatformdeposits.ThepresentpaperfocusesonthepetrographicfeaturesandsedimentaryervironmentsoftheMiddle-UpperOrdovicianstratainthearea,providingfurthertheoreticalsupporttotheestablishmentofthesectionandfil-lingthegapinthisrespect.

简介：Dikeswarmsaregenerallyascribedtointrusionofmantle-sourcemagmaresultfromextension.BasicdikeswarmsaroundtheShanxi-Hebei-InnerMogoliabordersinthenorthernperipheralareaoftheNorthChinaCratoncanbedividedintofiveagegroupsaccordingtoisotopicdating:1800-1700Ma,800-700Ma,230Ma,140-120Ma,and50-40Ma.Geological,petrologicalandisotopegeochemicalfeaturesofthefivegroupsisinvestigatedinordertoexplorethevariationofthemantlematerialcompositionintheconcernedareawithtime.AndthevariousextensionalactivitiesreflectedbythefivegroupsofdikeswarmsarecomparedwithsomeimportanttectoniceventswithintheNorthChinaCratonaswellasaroundtheworldduringthesameperiod.

简介：新种，白果树huolinhensissp。nov与从更低的白垩纪的保存得很好的表皮，在内部蒙古的Huolinhe煤地的Huolinhe形成，中国，词法上并且解剖地被学习。新种类的主要人物在深深地在叶柄的表皮上与狭窄的脑叶，在上面、更低的表皮的房间上开发的毛状体，在上面的表皮为每个房间在穹状的墙上开发的媒介乳头状的小突起，和没有毛状体被把的叶子被发现。G的这些人物。huolinhensissp。nov。与以前报导的白果树的已知的种类区分开来。新种类的这研究为石块白果树的分类研究是有益的，并且应该对更好理解有用在早白垩纪期间住在东北中国的白果树的paleoenvironment。

简介：在我们讨论基于含碳二叠的stratigraphic的领域调查预定Paleo亚洲的海洋的最后的闭合的这份报纸，在东南的内部蒙古的序列和沉积环境与它的附近的区域的地质学结合了。研究显示出那在期间在Tianshan-HingganOrogenic系统的东方片断含碳二叠，有对大陆人沿岸浅海的巨大的ENE-NE-trending沉积的盆，通过东南的内部蒙古向东从Ejinqi在西方开始进吉林和Heilongjiang。分发更低在广阔区域含碳是稀少的。晚含碳或二叠的暴烈沉积的岩石unconformably总是躺泥盆纪以上单位。上面含碳中间二叠被沿岸浅海的存款统治并且上面二叠，由大陆人存款。晚含碳二叠没有subduction碰撞造山运动的踪迹，逐渐地暗示盆由缩小和shallowing消失了。另外，是笔记感兴趣Ondor和和Hegenshanophioliticm戠獩畣瑩Τ

简介：摘要：在这份报纸，试验性的研究被进行以便从高氧化铝的苍蝇灰直接测试sintering多铝红柱石的可行性，没有增加任何额外的材料。结果证明在大多数sintered样品的多铝红柱石内容是超过70%。从beneficiated苍蝇灰的样品sintered在一样的合成条件下面从同样收到的苍蝇灰比那些有多铝红柱石的一个更高的内容。为了获得一个平等者，多铝红柱石总计，更高的sintering温度比为同样收到的苍蝇灰为beneficiated苍蝇灰被需要。就sintered多铝红柱石的物理性质而言，有利sintering温度是1400

简介：EarlyPaleozoicgranodioritehasbeenidentifiedonthenorthernmarginoftheNorthChinacratonintheeastsectionofthecentral-Asianorogenicbelt,whichwaspreviouslyknownasearlyIndosinianinage.ByusingtheLA-ICP-MSmethod,theobtainedzirconU-Pbageis445.62.7Ma,whichrepresentsthecrystallizationageofthegranodiorite.Thegranodioriteneartheeastofthelarge-sizedBilihegolddepositisofthetholeiiteserieswithlowpotassium.Itisquasi-aluminousI-typegranite,enrichedinsodium(Na2O/K2O=7.299.77)andmagnesium(Mg#=0.510.67).TheΣREEvalueisrelativelylow,obviousdifferentiationisshownbetweenLREEandHREEandwithinLREE,andtheEuanomalyislowandnegative(δEu=0.740.91).Intheprimitive-mantlenormalizedspiderdiagramsoftraceelements,thegranodioriteisrelativelyrichinLREEandLILE(Ba,Sr,Th),andstronglydepletedinHFSE(Nb,Ta,TiandP),whichshowsfeaturesofsubductionzonecomponents(SZC).InthediscriminationdiagramsoftectonicsettingsofgraniteforRbvs.(Nb+Y),Rbvs.(Ya+Ta),La/Nbvs.Ba/NbandTh/Nbvs.Ba/Nb,thegranodioriteexhibitstypicalfeaturesofislandarcgranite.ThenormalizedvaluesofKandRbareextremelylow,whilethevaluesofSrandEuareveryhigh,whicharesimilartothoseofislandarcmagmathathasundergonemetasomatismoffluidfromtheoceaniccrust.ThegranodioriteisrelativelydepletedinεHf(t)(5.17.1)andlowinεHf(t)modelages(1089921Ma).IntheεHf(t)vs.age(T)diagram,thedistributionareaofthegranodioriteisaccordantwiththefieldoftheXing'anling-Mongoliaorogenicbelt,whichindicatesthatthemagmaticsourcesaremainlythemixtureofpartialmeltingofwedgedmantlesubjectedtometasomatismoffluidfromtheoceaniccrustandyoungsubstancefromthecrust.ThegranodioriteissimilartothefelsicarcmagmaintheDamaoBanner,BateObon,BoinSumandOrdorSumregions,andtheyaltogetherconstituteanearlyPaleozoicaccretionaryislandarcma

简介：ObjectiveTwoimportantgeologicalissueshavelongbeencontroversialintheXing–MengareaofNorthChina.ThefirstconcernsthefinalclosureofPaleo-AsianOceaninXing–Mengarea,andtheotherconcernsthefoldingandliftingoftheXing-MengTrough.ThefocusofthsesissuesistheLatePermiansedimentaryenvironment,whichis