简介：Therearemanythrust-relatedstructuresoccurringinthePaleozoicstrataoftheNiushouMountaininthecentralpartofNingxiaHuiAutonomousRegion.Thefault-relatedfoldsarethetypicalstructuresinthisarea.Basedontheanalysisaboutthesestructuresandtheirrelationships,theprocessesbywhichthesestructuresoftheMiboshanFormationwereformedarereconstructed,andthestrataunderwentaboutthreestagesofdeformation:(1)horizontalshortening,(2)folding,and(3)thrusting.AndthefactthattheNiushouMountainistheleadingedgeofanoldthrustsheetwasproved,theNiushouMountain,theDaluoMountainandtheXiaoluoMountaintogetherconstitutethefrontpartofthisoldthrustzone,sotheNiushouMountainandtheOrdovicianstratainthecentralandsouthernpartsofNingxianowarelikelyallochthons.IntheperiodfrommiddleOrdoviciantoDevonian,theareasofthecentralandsouthernNingxiabelongedtotheback-arcforelandbasinofNorthQilianshanorogen,whichwasadjacenttothecontinentinthenorth.InthelaterpartoftheearlyPaleozoicperiod,theNiushouMountainwasformedaftertheclosureoftheback-arcforelandbasin.

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简介：Theconceptoffaultjunctionisproposedtodescribetherelationshipbetweenthetwofaultsbytheauthors.ThejunctionrelationshipbetweenGanjiangandTanlufaultsisanalyzedinthispaper,andthishasbeenelucidatedthroughnumericalsimulationaboutthetectonicstressfieldanalysis.NumericalsimulationofthetectonicstressfieldconductedforthemajormineralizationstageoftheJiujiang-Ruichangjunctionarearevealsthatthestressfieldofthejunctionstructureatthemajormineralizationstageshowsarelativelycloserelationshipwiththeformationoftheoredeposits(occurrences).

简介：TheeruptionofVesuviusof79ADcausedextensivedestructionsallovertheCampanianarea,engulfingthecitiesofPompeii,Herculaneum,OplontiandStabiae.Theeruptionfollowedalongquiescenceperiodandtheinhabitantsoftheareaweresurprisedbythevolcanicevents.Thefirstpartoftheeruptionwascharacterizedbyawidespreaddispersalofpumicesfromahigherup-tivecolumn.Thesecondpartoftheeruption,character-izedbypyroclasticflowsemplacement,causedthemajordamageswithextensivelifelossesinmostofthetownssurroundingthevolcano.InPompeii,themajorcasual-tiesduringthefirstphaseresultedfromroofcollapses;duringthesecondphase,peoplewerekilledeitherbyphysicaltraumaduetothekineticenergyofthefloworbysuffucationbecauseoftheash-richatmosphere.

简介：ThereareplentyofSinianandCambrianpotentialshalegasresourcesinSouthChina,whichischaracterizedbyhighthermalevolutiondegrees,poordrillingperformancesandonlyoccursinlocalareas.Takingtheprinciple“hightofindlow”isthekeyissuetoachievingabreakthroughinoldershale.ChinaGeologicalSurveydrilledintheperipheryoftheProterozoicbasement,i.e.theHuanglinganticline,inthewesternHubei,andHannanpaleocontinentinthesouthernShanxi.Itreceivedhigh-qualitygas-bearingshalewithrelativelylowRointheinLowerCambrianNiutitangformationandSinianDoushantuoformation.BasedongeologicalconditionsofshalegasreservoirsintheHuanglinganticline,thispaperputsforwardthenewmodelnamed“Controloverreservoirsbyperipheryofbasement”aboutshalegasaccumulation,suggestingthattheshaledepositedinadeepwatercontinentalshelfintheperipheryofthebasementischaracterizedbyshallowburial,ashortburialtime,stabletectonics,relativelylowthermalevolutiondegrees,andshalegasreservoirsinagoodcondition.TheshaleoftheSinian-CambrianstratadepositedindeepwatercontinentalshelvesintheperipheryofChuanzhongpaleo-upliftinSichuan,HannanpaleocontinentinthesouthernShanxi,HuanglinganticlineinwesternHubeiandJiangnang-Xuefengpaleo-upliftinHunanandGuizhouprovincehavegoodshalegasexplorationpotential.

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：<正>Interlayerfaultisafracturezonecausedbyinterlayer-slidingalongthebeddingsurfaceofstrataoruncomformity.Mainly,itisformedbyrelativeslipbetweentherockbedswhichhavelithologicdifferenceintheprocessofcompressivefolding.Itisutilizedandreformedbythesucceedingtectonicactions.Duetoitsmultiperiodicactivityandlargecontactsurfacewithuranium-bearingstrata,itplaysanactiveroleinore-controlandmetallogenesisinthecourseofaseriesoffaulttectono-geochemicalactions.

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简介：由使用SHRIMPU-Pb和单个锆石逐步的蒸发方法，作者从东方Hebei为granitoids获得了一些结果省。Yuhuzhaihyperthenetonalitic花岗石被形成2550妈以前，Qingyangshugabbroic片麻岩2536妈，Luecao附近的theYinmahegranodioritic片麻岩，Lulong县，2533妈，gabbro-dioritic片麻岩nearLongwan，Qianxi县，2518-2515妈，在Zunhua2515的Qiuhuayutrondjemitic片麻岩妈，在Zunhua2495妈的theXiaoguanzhuangtonalitic片麻岩，和在Qianxi县2492Ma的Cuizhangzi片麻岩。这些geochronilogical数据尽管多样，在作文，类型和起源表明那，在东方Hebei省的花岗石的片麻岩是emplaced并且在magmatic的一个相当短的时期结晶活动。在这小调子差距的片麻岩的如此的大数量的形成建议它是在Neoarchean的结束的一个批评外壳生长阶段。各种各样的类型的事实thatgranitoids同时发生了暗示一在plating(披风羽毛)下面大规模活动，它当时为外壳生长负责。

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简介：Duringthelast2yearstheIUGShasrevieweditsOrganisationandOperationstoallowmoreefficientandeffectiveadministrationintothefuture.AmongtheitemsreviewedwasthelifeofCommissionswhichhavenowbeendefinedatamaximumof8years.AsaconsequenceCOGEOENVIRONMENT,whichhasbeeninexistencesinceearly1990,wasformallycloseddownattheIGCinFlorenceinAugust2004.ThedecisionbytheIUGSCounciltocloseCOGEOENVIRONMENTdidnotinanywayimplythattheroleoftheIUGSinpromotinggeoscienceinenvironmentmatterswascompleted.

简介：在里面很多地球物理或planetological背景包括地球内部核心，从岩浆海洋结晶的一个硅酸盐披风，或包围可能在很多主神并且农神冰冷的satellitesa对流传热遇到的一种深水oceana状况的冰壳水晶的层在与它的melt的层的接触。允许在一个稳固的层的边界或两个融化/结冰是可能的在层影响传送对流的模式。我们这里学习热传送对流的发作在一粘滞球形的壳与动态地导致了它的边界在也或两个都融化/结冰。这被显示出无尺寸的数字P(为每条边界的)的价值上的每interfacepermeable或impermeabledepends的行为，它是融化/结冰的timescale在上的比率一粘滞松驰timescale。P的小价值对应于可渗透的边界条件，当P的大价值对应于透不过的边界条件时。当也边界描绘的数字P是足够小的时，线性稳定性分析预言半渗透的边界的重要效果：允许边界在也融化/结冰允许更大的规模的出现对流模式。当外部边界是可渗透的时，效果是特别地激烈的，自从1个模式仍然是的度甚至在薄球形的壳的情况中最不稳定。在有可渗透的内部、外部的边界的球形的壳的情况中，最不稳定的模式在稳固的壳的一个全球翻译在于，没有变丑。在有可渗透的外部边界的一个完整的范围的限制，这对应于最近为地球内部核心建议的对流翻译模式。作为可能的申请的另一个例子，我们在假定全球表面下的海洋的存在的恩塞勒达斯冰壳讨论热传送对流的盒子，并且发现融化/结冰能在冰壳在传送对流的模式上有重要效果。

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简介：Deepxenolithareimportantsamplesforustoknowcompositionandnatureofthedeepcrust.Therearemanynewvolcanoswhichcanallkindsofxenolithssuchasalowercrustalgraulite,anduppermantle-derivedperidoliteandlherzolite.IneasternChina,thereoccuredmanydeepxenolithsinMesozoic-Cenzoicalkalinebasalt.Besidesthese,somesmallvolcanoseruptionswerefoundedinsouthernHunanprovince,whichageisabout132-151Ma.

简介：Hemipelagiccontourites在志留纪Kepingtage被解释()在Tarim盆的形成，西北中国通过露头的研究，核心，记载得好、地震的数据。他们被描绘由对厚beddedmudstone薄，与轮廓电流不规则地薄的床透镜状的siltstone和沙岩。几丁质石头，graptolite，薄壳的瓣鳃类，dissoconch，和acritatch石块在黑暗有颜色的mudstones是在场的。一个Helminthopsis-Scolicia踪迹石块集合在露头和钻的核心被观察。沙岩主要是排序得好的并且subangular-subroundedsublitharenite。沉积结构包括面向的当前的结构，erosional表面，和小规模的生气层化。烃来源和水库岩石根据古气候和paleosalinity的以前的解释被评估的contourites的潜力。

简介：西伯利亚冰岛的热点轨道是唯一的保存大陆人热点轨道。尽管在160妈和60妈之间的轨道和它的联系年龄前进很好还没被理解，轨道的这节仔细被连接到美亚混血儿盆，Alpha门捷列夫定律理兹和Baffin海湾的构造进化。用paleomagnetic数据，暴烈的结构和海洋的地球物理的数据，北极盘子(欧亚的板，北美的板，格林兰板和阿拉斯加Microplate)的paleogeography被重建，西伯利亚冰岛的热点轨道在160妈和60妈之间被连结。我们的结果建议Alpha门捷列夫定律理兹能是在160妈和120妈之间形成了的热点轨道的部分。在这个时期期间，热点在格林兰控制了Baffin海湾的构造进化和mafic岩石的分发。在整个中生代时代，上述的北极盘子顺时针方向经历了旋转并且向北方太平洋向东北移居了。从古老的冰岛的披风羽毛的垂直影响打破了这平衡，减慢一些盘子并且导致几海洋盆的开始。这个过程控制了北极的构造进化。

简介：Coalisalwaporelatedtoaccumulatingandburialofrcmainsofplantorlowcranimal-plantandmi-croorganism.Thecharacteristicsofmacroscopicandmicrocosmicmaccral,geologicaloccurrence,pctrologyandmineralogyofcoalmcasuresstrata,lithofaCjcsandpaleoSeo8raphy,8eochcmistryandsoonmakeknownthatcoalisanexogeneticsedimenta

简介：ThePayangazucomplexinthecentralMyanmariscomposedmainlyofquartzdiorite,granodiorite,andsomesynplutonicmaficdikes.ThequartzdioriteandgranodioritehavezirconU-Pbagesof130.5±4.0(MSWD=3.5)and118.4±2.5Ma(MSWD=2.4),respectively.Rocksamplesofthequartzdioriteandgranodioritearemetaluminous,enrichedinlarge-ionlithophileelementslikeLREE,Rb,Th,andU,anddepletedinhighfield-strengthelementssuchasHREE,Nb,Ta,P,andTi,indicativeofarc-typemagmaticaffinities.WholerocksamplesofthequartzdioritehaveεHf(t)valueof+0.6,initial^87Sr/^86Srratiosof0.7086to0.7100,andεNd(t)valuesof-4.8to-4.9;whereasrocksofthegranodioritearerelativelyisotopicallyenriched,withεHf(t)valuesof-5.1to-7.2,initial^87Sr/^86Srratiosof0.7117to0.7118,andεNd(t)valuesof-8.7to-8.8.TheisotopicdatatogetherwiththehighMg#(boththequartzdioriteandgranodioritehaveMg#valuesof>40)suggestastronginvolvementofmantlematerialsinthegenesisoftheparentmagmas.Thepossiblepetrogeneticprocessmaybethattheascendingofmeltsfrompartialmeltingofmetasomatizedmantlewedgetriggeredbydehydrationofsubductedslabresultedinpartialmeltingofthelowercrustandmixedwiththelatter.TheseEarlyCretaceousintrusionsfromthecomplexareolderthanthosefoundintheeasternWuntho-PopaarcinwesternMyanmar,easternHimalaya,andwesternYunnanwhichareinterpretedtoberelatedtotheNeo-Tethyansubduction,andhaveεNd(t),εHf(t)valueslowerthanthelatter.Onthecontrary,theagesandgeochemicalcharacteristicsofthePayangazucomplexareconsistentwithsomeoftheintrusionsinthenorthernmagmaticbeltinTibet,easternHimalaya,andwesternYunnanwhicharebelievedtobeassociatedwiththesubductionoftheBangong-NujiangOceancrust.Thus,weproposethattheEarlyCretaceousintrusionsinthecentralMyanmararemostlikelyrelatedtothesouthwardsubductionofanoceanslabthatwaspossiblyanextensionoftheBangong-NujiangOcean.

简介：Thegeochemicalbehaviorsofhydrogenandoxygenisotopesinthehydrothermalsystemandtheirinher-entrelationshipwiththewater/rockexchangearediscussedinthispaperInadditiontothetemperaturecon-ditions,theeffectiveW/RratioisanotherfactorcontrollingthechangesinHandOisotopecompositionsofthealteredrockandhydrothermalwater.Besides,theapplicationandgeologicalsignificanceofthewater-rockexchangetheoryarealsodiscussedinthelightoftheHandOisotopecompositionsandtheirvariationcharac-teristicsofthemineralizinghydrothermalwaterandalteredrocksfromseveralmineraldeposits.Finally,abriefevolutionalmodelofHandOistotopecompositionsofmeteoricandmagmatichydrothermalwatersinahydrothermalsystemisgiven.