简介：BasedonthediscussionontheintracontinentalorogenicigneousrocksformedafterIndia-Asiacollision(40or45Ma),theintracontinemalorogenicprocessesofQinghai-Xizang(Tibet)-Himalayaaretraced.Muscovite/twomicagraniteisconsideredasapetrologicalrecordofintracontinentalsubduction.Volcanicrocksofshoshoniteseriesarebelievedtobetheproductsoftheorogenicandoutsidecratoniclithosphereconvergence.Theintracontinentalorogenicigneousrocksaredevelopedonlyonthemarginsoftheorogenicbelt.Thepairingphenomenonoftheigneousrockzonesisregardedasoneofthebestsignstorecognizethespecialrangeoforogenicbelt.Thestageofmagmaticactivityisarepresentationandindicatoroforogenicepisode.ThreepairsoftheigneouseventsinOligocene,MioceneandPleistoceneandtheirspacedistributionindicatethreecorrespondingorogenicepisodesandthehorizontalexpansionacrosstheorogenicbelt,respectively,Onthenorthernandsouthernmarginsof

简介：TectonicallytheDabieorogenicbeltconsistsmainlyoftheDabieshanYanshanianupliftedzoneandtheBeihuaiyangVariscan-Indosinianfoldingzone.InthenorthboundaryadjoiningtheNorthChinaBlock,thereareanEarlyPalaeozoicophioliticmixtitebeltandtheHefeiMesozoic-Cenozoicfaultedbasinwhichoverlapsonthesuturebelt.InthesouthofDabieorogen,thereisasecondarytectonicunitcalledForelandthrust-faultedstructuralzonewhichwasmainlyformedbytheintracontinentalsubductionsduringMesozoicera.ThestudyshowsthattheDabieBlockisapartofmid-lateProterozoicpalaeo-islandarcatthenorthmarginofYangtzeBlock.DuringCaledonianperiod,asasubmergedupliftatthenorthencontinentalmarginofYangtzeBlock,theDabieBlockcollidedwiththeearlyPalaeozoicpalaeo-islandarcatthesouthmarginofNorthChinaBlock,resultingintheconvergenceoftheNorthandSouthChinaBlocksandthedisappearanceofoceaniccrust.Sincethen,large-scaleintracontinentalsubductionswerefollowed.DabieOrogenicBeltistheproductofoverlappingofYangtzeBlock,DabieBlockandNorthChinaBlockunderthemechanismofintracontinentalsubduction.IndosinianperiodistheperiodofchiefdeformationandhighpressuredynamicmetamorphismforDabieBlock,andYanshanperiodisthemainorogenicperiodinwhichtheremeltingofcrustcausedbybasementshearingresultedinlargescalethermometamorphism.ThepresenttectonicframeworkoftheorogenwasfinallyformedbytherapidupliftingoftheDabieshanmountainsandglidingsouthwards,whichresultinthedevelopingofthrustbeltonsouthsideandtheextensionaltectonicmovementonnorthside.

简介：Delaminationoccursmainlyinthelithosphericmantle,involvinginteractionwiththeasthenosphere,theprocessofwhichishardtoobservedirectly.ourresearchongranitoidsinthewesternkunlunorogenicbelt,China,indicatesthathighconterntsoftheheat-producingelementsThandUmayfurnishlithosphericdelaminationwithnewevidence,Atthesametime,wehaveestablishedtheTh-SiOandU-SiO2diagramstodiscriminatedelamination.

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简介：ＧｅｏｃｈｅｍｉｃａｌＦｅａｔｕｒｅｓｏｆＯｐｈｉｏｌｉｔｅｉｎＭｉａｎｘｉａｎＬｕｅｙａｎｇＳｕｔｕｒｅＺｏｎｅ，ＱｉｎｌｉｎｇＯｒｏｇｅｎｉｃＢｅｌｔＬａｉＳｈａｏｃｏｎｇ；ＺｈａｎｇＧｕｏｗｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＧｅｏｌｏｇｙ，Ｎｏｒｔ...

简介：Asthestructuralbodyrelatedtotemporal-spatialevolutionandtectonicdynamicsystem,theorogenicbeltandbasinarenotonlydependentoneachotherinspacebutalsocloselyrelatedwitheachotherintermsofinfrastructure,mattertransferenceanddynamicmechanisms.Byusingapatitefission-trackmethod,theauthorsfirstlyanalyzetheupliftanddenudationratiosoftheQinling-Dabieorogenicbelt,andbyusingtectonicallydeformedcombinationanalysisandtectonic-thermalsimulationthemaingeologicaloccurrencesarealsoillustrated.Itisfoundthattheremusthavehadmulti-phasedifferentialupliftanddenudationphenomenaintheQinling-DabieorogenicbeltduringtheMesozoic-Cenozoic.Then,theregionalevolutionpatternofqualitativeandquantitativedenudationprocessisobtainedduringthepost-orogenicperiod.Onthebasisofsummarizingevolutionprocessofthebasin-rangesystemintheQinling-DabieorogenicbeltduringtheMesozoic-Cenozoicanditseffectsonregionalenvironment,theinfluenceofevolutionprocessongeomorphologiclandscapeschange,watersystemvicissitude,eco-environmentsuccessionanddrainagebasinsystemevolutionisdiscussed.

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简介：Mafic-ultramafic建筑群在在中央JinlinProvince的Hongqiling是普遍的，NE中国。Hongqiling建筑群包括辉岩，橄榄石websterite，lherzolite，斑粝岩和leucogabbro。基于最近的geochronological结果，这些侵入产出大约216妈的锆石U-Pb年龄，暗示那他们在晚三叠纪的时期的emplaced并且mafic-ultramafic建筑群是在起源的post-orogenic。这些年龄与在区域的A类型花岗石的炮兵阵地是同时代的，但是比syn-orogenicgraniticmagmatism稍微年轻。父母岩浆的作文与高MgO在结晶的积累的橄榄石的使平衡期间是玄武岩的，并且它来自弄空或少年石版印刷球的披风，根据痕量元素和Sr-Nd同位素的结果。外壳的材料的数量污染了magmatic来源，暗示mafic-ultramafic岩石从导出外壳、导出披风的岩浆的混合产品发源。因此，magmatic来源被外壳的材料的数量污染，并且随后的水晶分别导致了Cu-Nimineralization。动态分析显示在北方中国古地台andJiamusi山岳的碰撞以后，石版印刷球的分层在期间造山运动以后导致了起来岩流圈并且团并且在导出披风的岩浆的plating下面侵入的welling，它由于导出披风的岩浆并且下地壳的部分融化导致了主要mafic-ultramafic岩浆的形成。这结果建议mafic-ultramafic建筑群属于在post-orogenic期间演变，并且他们作为在post-orogenic扩展环境存在的mafic-ultramafic塘群被暴露那处理的一间典型地重要的magmatic套房。Italso暗示orogenic过程在这个地区性的地质的背景最终完成了。在Xing的mafic-ultramafic建筑群的Thewidespread出现“一--在NEChina并且在在北Xinjiang的Altay-Tianshan-JunggarOrogenic的蒙古Orogenic显示maficintrusions是在post-orogenic过程期间演变的一间重要magmatic套房。这mafic岩浆的部分能在plated下面有下地壳，并且当热为associatedlate阶段采购花岗石的岩浆�

简介：Ｙａｎｓｈａｎｉａｎｍａｇｍａ－ｔｅｃｔｏｎｉｃ－ｍｅｔａｌｏｇｅｎｉｃｂｅｌｔｏｆｔｈｅＥａｓｔＣｈｉｎａｉｓａｐａｒｔｏｆｔｈｅｃｉｒｃｕｍ－Ｐａｃｉｆｉｃｄｏｍａｉｎ．Ａｌｏｔｏｆｐａｐｅｒｓｈａｖｅｂｅｅｎｐｕｂｌｉｓｈｅｄｔｏｄｉｓｃｕｓｓ...

简介：关于在在中国的纵贯的地震的带和基于地理信息，系统(GIS)被做了的中央orogenic带的连接区域的差错和seismicity之间的关系的研究。为每在这个区域的16个差错，我们造一个25km缓冲区地区和使用覆盖分析在每个差错上调查seismicity和它的特征。结果作为follows:the揭开主要地震差错西方的片断西方Qinling差错，Lixian-Luojiabao差错的西南的片断，Lintan-Dangchang差错的东南的片断，Wenxian差错的西南的片断，Huya差错，和Xueshan差错北边。最活跃的差错是Huya和Xueshan差错，然后，Tazang差错，Lixian-Luojiabao差错和Guanggaishan-Dieshan的北山麓指责。研究地区能根据焦点的深度被划分成四个区域，它向南向北变得更深从到。焦点的深度的侧面显示几何学和差错的机械性质，并且进一步揭示西藏的高原的东方挤出和群众的向东南的逃跑的运动模型，因此在这个区域对地震和危险缓解为保护提供基础。

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简介：ＴｈｅＣｅｎｔｒａｌＭｏｕｎｔａｉｎＲａｎｇｅｓｏｆＣｈｉｎａ，ｗｈｉｃｈｏｃｕｐｙｔｈｅｃｅｎｔｒａｌｐａｒｔｏｆＣｈｉｎａ，ｃｏｍｐｒｉｓｅｍａｉｎｌｙｔｈｅＤａｂｉｅＭｏｕｎ－ｔａｉｎｓｉｎｔｈｅｅａｓｔ，ｔｈｅＱｉｎｌｉｎｇＭｏｕｎｔａｉｎｓ...

简介：TheTan-LufaultzonejoinstheDabieMountainsonitseasternmargin,andoffsetstheDabieandSuluorogenicbeltssinistrallyforabout500km.Onthebasisofcalculationoftemperatureandpressureexperiencedbythetwophasesofthefaultzoneaswellasthethermo-chronologicalinformationonmylonitefromtheearlierandlaterTan-LufaultzonesontheeasternmarginoftheDabieMountains,thispaperdiscussesthedelaminationhistoryandupliftingmagnitudesoftheDabieMountainsfromearlierJurassictoearlierCretaceous.Frommineralassemblages,mineraldeformationandmuscovite-chloritegeothermometrycalculation,itisknownthatthetemperatureexperiencedbythetwophasesofTan-Lufaultzonesarebetween400℃and450℃,andtheconfiningpressuresarebetween0.25Gpaand0.36GPafortheearliershearzonesand0.24-0.39GPaforthelateshearzones.AccordingtothegeobarometryofSi-in-phengiteandbyconsideringshearheatingandtectonicover-pressure,itisconcludedthatthemaximumformationdepthsforthetwophasesoftheductileshearzonesarenotmorethan12km.Differentialformationdepthsforthetwophasesofshearzonesare1-2kmatmost.Atabout190Maand128Ma,theTan-Lufaultzoneexperiencedtwophasesofcoolingevents.Duringthisperiod,theeasternmarginoftheDabieMountainsexperiencedatectoniccalmperiodandnouplifting.AccordingtoinformationfromtheTan-Lufaultzone,theupliftingmagnitudesoftheDabieorogenicbeltsarenotmorethan12kmduringtheearlierCretaceous.