简介：ThispaperdealswithafossiltaxonofBittacidae(Mecoptera,Insecta)collectedfromtheMiddleJurassicHaifanggouFormationinBeipiaocounty>Liaoningprovince,andconsideredtobeadiscoveryinChina.Basedmainlyonitssalientfeatures,anewgenus-Liaobittacusgen.nov-iserectedanditsaffinityandmigrationarealsodiscussed.

简介：TheauthorshavedetailedlyandsystematicallystudiedthecarbonisotopiccompositionofEarlyProterozoiccarbonaterocks.SampleswhicharealldolomicriteweretakenfromtheJianancun,DaguandongandHuaiyincunFormationsoftheHutuoGroupinWutaiCountyShanxiProvince,NorthChina.Atotalof209sampleswereanalysedfortheircarbonisotopecompositions,andthemeansamplingintervalwas6.9m.Carbonisotopeanalysisclearlyshowsδ13CshiftsattheboundarybetweentheJian’ancunFormationandDaguandongFormationandneartheboundarybetweentheDaguandongFormationandHuaiyincunFormation.LikecarbonisotopeshiftsattheCretaceous-Tertiary,Permian-TriassicandPrecambrian-Cambrianboundaries,thediscoveryofδ13CshiftsintheEarlyProterozoichasimportantsignificanceinfurtherstudiesonEarlyProterozoicbioticevolution,regionalandglobalstratigraphiccorrelation,andcarbongeochemicalcycles.

简介：1.ObjectiveThestudyareaislocatedinthenorthofJianshiarea,Hubeiprovince.Accordingtothegeologicsurvey,theSilurianblackshaleintheareaischaracterizedbyhighabundanceoforganicmatterandhighhydrocarbonpotential.From1980s,JianghanOilfieldhasdrilled7wellsinJiannangasfieldlocatedinthesouthofstudyarea,whichshoweddifferentdegreeofoilandgasandrevealedagoodexplorationprospectfortheSilurianstrata.

简介：InNo.50kimberlitepipeofFuxianCounty,LiaoningProvince,aneclogiteinclusion(nodule),whichisextremelyrareinkimberlites,wasdiscoveredandphlogopiteexsolutionlamellaewerefoundingarnetsoftheinclusion.Microscopic,TEMandenergyspectralobserva-tionsandstudiesconfirmedthattheselamellaearephlogopite.Theyarecolourlessandacicularinsection,generally0.5-5μminwidthand10-100μminlength.Nevertheless,finelamellae,0.05-0.1μmwideand1-2μmlong,arealsowelldeveloped.Along[111]ofthegarnet,threesetsofphlogopitelamellaeshoworientedarrangementapproximatelyatanglesof60°-70°,indi-catingthattheselamellaemightbetheproductofexsolutionfromgarnetasaresultofpressure-releasewheneclogiteascendedfromtherelativelydeepleveltotherelativelyshallowlevelofthemantle.Tinyacicularexsolutionminerals(orinclusions)arecommonlyfoundingarnetandpyroxeneineclogiteinclusionsofkimberlitesallovertheworldandithasbeenre-portedthattheidentifiedexsolutionmineralsincludepyroxeneandrutile.Thisisthefirsttimethatphlogopiteexsolutionlamillaewerefoundineclogiteinclusionsintheworld.

简介：1.ObjectivesAsthediscoveryofgashydrateinQilianMountainpermafrostin2008,themaincontrollingfactorsanddistributionofgashydratearenotclear.Thisrestrictsthefurtherprogressingashydratesurveyinthisarea.Hence,ChinaGeologicalSurveyerectedtheproject"ExplorationofgashydrateresourcesintheQilianMountainanditsadjacentareas"continuouslytobetterunderstandthegashydrateaccumulationintermsofgreatergashydratediscovery.

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简介：Miaowan()ophiolite是在Yangtzecraton的北边缘附近外面收割的高度割下的ophiolitic建筑群。这建筑群的岩石由组成，从底部到顶，局部地包含podiform铬铁矿的harzburgitetectonite，纯橄榄岩，分层、各向同性的斑粝岩，sheeted堤建筑群(SDC)，有燧石豆荚和层的元枕头熔岩，和构造地设置的大理石。SDC向下是Miaowanophiolitic顺序，和等级的很重要、重要的部分进斑粝岩和ultramafic岩石，并且进元枕头熔岩向上。一些堤保存单程的chilled边缘，典型地代表extensionalophiolitic背景而大多数保存两倍chilled边缘，在寒心的方向能的情况中决定了。SDC主要由元辉绿岩(粗玄岩)组成，元斑粝岩和ultramafic的meta-plagiogranite，和小数量摇。LA-ICP-MS锆石标明日期收益一上面拦截年龄1026?????????????????????慩睯湡??灯楨汯瑩??丠潥牰瑯牥穯楯??慵杮楬杮？

简介：1.ObjectiveTheNandan-Yizhoufaultingbasin,whichislocatedinLongtou-Limiao,Guangxi,isinthesouthernmarginoftheYangtzeBlock,thedepressionzoneofsouthHunanandnorthGuangxi.ItisacarbonateManganese(Mn)oredepositintheBapingGroup,whereoccurstheNongzhulargeMndepositina100kmlonganticlinoriumwithgreatMnresourcepotential(Fig.1).

简介：TheOrdovicianChangtuFaunaisrecentlydiscoveredintheXia’ertaiandHulanGroupsinnorthernLiaoning-centralJilin.Thefauna,containing10generaand14species(including3newgenera,9newspeciesandanunidentifiedspecies),iscloselyrelatedinevolutionwiththeEarlyCambrianQinghezhenFauna.Thediscoveryofthisfaunaissignificanttothestudyontheageofthestrata,Ordovicianbiostratigraphyandgeo-logicalevolutionofthetectonostratigraphicalterraneonthenorthernmarginoftheSino-Koreanplate.

简介：ObjectiveUnderstandingthedynamicsofsedimentgravityflowsisofgreatimportancetocorrectlyinterprettheirrelateddeposits.Thediscoveryofsupercriticalsedimentgravityflowsprovidessomenewviewpointsfortheexplanationofcontroversialsedimentgravityflowdeposits.However,thedynamics,formation,evolutionprocessesofsupercritical

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简介：<正>Theworldpetroleumexplorationsuggeststhat,about70%oftheworld’spotashresourceswerediscoveredduringoilandgasexploration(Zhengetal.,2007).TheKuqadepressionintheTarimbasinisabundantwithpetroleumexplorationdata,and

简介：ThePulangporphyrycopperdeposit,locatedintheGezantectonic-magmaticarcandsouthoftheYidunislandarc,southwestofSanjiangmetallogenicbeltinYunnanprovince,isasuper-largeporphyrycopperdeposit.Duringrecentdecades,thePulangdeposithasattractedwideattentionamonggeologistsbothathomeandabroad.Manypreviousresearcheshavediscussedits更多还原

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.

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简介：1.ObjectivesKeeryinraremetaloredistrictislocatedattheintersectionofMarkam,JinchuanandRangtangcounties.Morethan1000pegmatitedykesareassociatedwiththeKeeryingranitepluton.Thesepegmafitedykesarethemajorsourceofindustrialspodumeneorebodies.Basedonthepreviousstudies,wechoseKeeryinraremetaloredistrictasthekeytargetareaforgeologysurvey.Inthisstudy,wediscoveredsixpegmatitelithiumveinsintheSizemuzudistrictoftheKeeryin.Moreover,westudythedistributionofregionaloredepositsandmetallogeny,delineateprospectingtargetandevaluatethemineralizationpotentialofLithium.

简介：AltynTagh差错是西藏的高原的北边界。作为在世界上的最著名的罢工滑倒差错之一，构造变丑上并且晚的大成就第四级滑倒率被造成了。然而，有AltynTagh差错是否延续到Jinta盆的长持续的争论或甚至东方。在这份报纸，我们使用卫星图象解释，领域调查，沟挖掘，和标明日期到最新在JintaNan掸人的东方结束发现NS惹人注目的陡坡的学习的光刺激的光。结果如下：第一，一组正常差错在Heihe河的平台T2上发展，全部的长度数量到40km，全部的陡坡高度是30畣慬楴杮琠敨映畡瑬猠楬獰猠潨獷氠湯?整浲愠瑣癩瑩敩?景映畡瑬?耶喩鼡?桴?慢楳?愠摮猠浯?潢湵慤祲映畡瑬?敫瑰愠瑣癩?晡整??‵吗？

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