简介：ThispaperbrieflyreviewsmainprogressintheresearchonlithosphericstructureandcontinentalgeodynamicsmadebyChinesegeophysicistsduringlast4yearssince22ndIUGGgeneralassemblyinJuly1999.Theresearchmainlycoversthefollowingfields:investigationsonregionallithosphericstructure,DSSsurveyofcrustanduppermantlevelocitystructure,studyonpresent-dayinnermovementanddeformationofChinesemainlandbyanalyzingGPSobservations,geodynamicsofQingzangplateau,geophysicalsurveyoftheDabie-Suluultra-highpressuremetamorphicbeltandprobingintoitsformationmechanism,geophysicalobservationsinsedimentarybasinsandstudyontheirevolutionprocess,andplatedynamics,etc.

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简介：在北方中国craton(NCC)的岩石圈的厚度的详细知识为在中生代和新生代理解craton的重要构造复活是重要的。我们由在这个区域把最新建议的连续小浪变换理论用于严肃场地模型(EGM2008)数据达到这个球门。不同结构的变化在侧面Alxa-Datong的由易到难的试题程序图象被识别()-Qingdao()黄海(侧面ABC)，transversingNCC的主要单位，它当主要代表莫霍和岩石圈岩流圈边界(实验室)波动，我们解释。想象的实验室象在东南盆和沿海的区域的6070km一样浅并且加深到仅仅在西北山脉和大陆人内部的140km。在LAB深度的大约30km的一个快速的变化被检测在在在Bohai之间的边界附近()海湾盆(BBB)和Taihang()山(TM)，与在这个区域标记纵贯的严肃貌(NSGL)的超过100mGal的不同严肃减少粗略地重合。最后我们在场为工作建模基于的严肃光谱分析结果，在高分辨率的地震图象和表面地形学上与观察合并。东方、西方的NCC之间的观察结构的差别多半越过NSGL与不同lithospherictectonics被联系。与地震断层摄影术结果和geochemical和petrological数据结合了，这建议岩石圈的那复杂修正可能伴随了在旧craton的构造复活期间变瘦的重要lithospheric。

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简介：ThespinelperidotitexenolithsofGroupIinQuaternarybasanitesfromNushan,Anhuiprovince,canbeclassifiedastwosuites:ahydroussuitecharacterizedbytheubiquitousoccurrenceof(Ti-)pargasiteandananhydroussuite.Thenineralchemistryrevealsthattheanhydroussuiteandoneassociatedphlogopite-bearinglherzoliteareequilibratedundertemperatureconditionsof1000-1100℃,whereasamplhibole-bearingperidotitesdisplaydistinctdisequilibrumfeatures,indicatingpartialreequilibrationfrom1050to850℃andlocallydownto750℃.Theamplhbole-bearingperidotiteswereprobablytheuppermostpartofthehightemperatureanhydroussuitewhichwasmodallymodifedbyfractionatingH2O-richmetasomaticagentduringregionalupwelling.Thisrelativelyrecentlithosphericuplifteventfollowedanolderuplifteventrecognizedfrompyroxeneunmixingofdomainsinlocalequilibrium,aswellasthedominantdeformationtextureintheanhydroussuite.ThefirstthermaldisturbancecanbelinkedwiththeregionalextensionandwidespreadbasalticvolcanisminJiangsu-AnhuiprovincessinceEarlyTertiaryandtheformationofthenearbySubei(NorthJiangsu)fault-depressionbasinduringtheEocene,whilethesecondeventinassociationwiththeformationofamphibolesprobablyindicatesthecontinuationbutdiminutionofupwaredmantlefluxsinceNeogeneinresponsetothechangeintectonicregimeforeasternchina.

简介：ThelinkbetweenthecrustaldeformationandmantlekinematicsintheTibetanPlateauhasbeenwellknownthankstodenseGPSmeasurementsandtherelativelydetailedanisotropystructureofthelithosphericmantle.However,whetherthecrustdeformscoherentlywiththeuppermantleintheShan-Thaiterrane(alsoknownastheShan-Thaiblock)remainsunclear.Inthisstudy,weinvestigatethedeformationpatternsthroughstrainratetensorsinthesoutheasternTibetanPlateauderivedfromthelatestGPSmeasurementsandfindthatintheShan-Thaiterranetheuppercrustmaybecoupledwiththelowercrustandtheuppermantle.TheGPS-derivedstrainratetensorsareinagreementwiththeslippingpatternsandratesofmajorstrike-slipfaultsintheregion.Themostprominentshearzone,whoseshearstrainratesarelargerthan100×10^–9a^–1,isabout1000-km-longinthewest,trendingnorthwardalongSagaingfaulttotheEasternHimalayanSyntaxisinthenorth,withmaximumrateofcompressivestrainupto–240×10^–9a^–1.AsecondaryshearzonealongtheAnninghe-XiaojiangFaultintheeastshowssegmentedshearzonesnearseveralconjunctions.WhilethestrainratealongRRFisrelativelylowduetothelowsliprateandlowseismicitythere,inLijiangandTengchongseverallocalshearzonesarepresentunderanextensionaldominatedstressregimethatisrelatedtonormalfaultingearthquakesandvolcanism,respectively.Furthermore,bycomparingGPS-derivedstrainratetensorswithearthquakefocalmechanisms,wefindthat75.8%(100outof132)oftheearthquakeT-axesareconsistentwiththeGPS-derivedstrainrates.Moreover,wefindthattheFastVelocityDirection(FVDs)atthreedepthsbeneaththeShan-Thaiterraneareconsistentwithextensionalstrainratewithgraduallyincreasingangulardifferences,whicharelikelyresultingfromthebasalshearforcesinducedbyasthenosphericflowassociatedwiththeobliquesubductionoftheIndiaplatebeneaththeShan-Thaiterrane.Therefore,inthisregiontheuppercrustd

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

简介：ThetectonicsettingandsourceofthePaleo-andMesoproterozoicmagmaticsuitesintheSWAmazoniancratonrevealedbyintegratedisotopicandgeochemicaldataallowcorrelationbetweentheaccretionarymobilebeltsandthecontemporarycontinentalmagmatism(e.g.rapakivicomplexes)withintheforeland.Thecontinentalmagmatismmayrepresentthesynorogenicresponsetohighheatflowintheasthenosphereresultingfromoceaniccrustsubduction,whichledtothedevelopmentofthesuccessiveProterozoicmagmaticarcs.