简介：The22ndIASMeetingofSedimentologywasheldintheConventionCentreoftheGrandHotelAdriatic,inasmalltouristictownOpatija,locatedontheeasternAdriaticcoastwhereCentralEuropeandtheMediterraneanmeet.ItwasthesecondIASMeetingheldinCroatia--thefirstone,4thIASRegionalMeetingofSedimentology,washeldinSplitin1983.TheMeetinginOpatijawasorganizedbytheInstituteofGeology(Zagreb)andtheCroatianGeologicalSociety.ThesponsorwasMinistryofScienceandTechnologyoftheReoublicofCroatia.

简介：The2ndMid-EuropeanClayConference(MECC'04)washeldbetween20-24thSeptember2004,inMiskolc,Hungary.Theideatoholdcommonconferenceswasacceptedbythenationalclaygroupsoffourneighbouringcountries,Poland,Slovakia,HungaryandCroatia,duringtheEUROCLAYMeetinginCracow,Poland,in1999.Thefirstconferencewasheldin2001atStaráLesná,intheHighTatraMts.inSlovakia.

简介：ItwasagreatpleasuretobeinbeautifulFlorencewithover7,000geoscientstswhohadregistered.Iwasverymuchinvolvedintwosymposiaongeoethicsandgeoeducation.Theybothwentverywell,butitwasinterestingthatthegroupswhocameweresmall.Inourdiscussionapointofagreementwasthatwemustattackthegreatglobalproblemssuchasvastmalnutritionandthefactthatmostoftheworldpopulationhasproblemswithfoodandwaterresources,notgold!,

简介：TheanalysisofavailableNdisotopedatafromtheTanzaniaCratonplacesimportantconstraintsonthecrest-mantleseparationages,andeventsmarkingjuvenilecrustaladditionandcrustalrecycling.Ndmodelagesdatetheoldestcrustextractionto3.16GaintheTanzaniaCraton,althougharockrecordofsuchantiquityisyettobefoundthere.Themostsignificantperiodofjuvenilecrustaladditionaswellascrustalrecyclingis2.7-2.6Ga.TheNdisotopesofmariesamplesshowthatchemicalheterogeneityexistedinthemantlebeneaththeTanzaniaCraton,withsomesamplesoriginatingfromsignificantlydepletedmantle,andmostsamplesoriginatingfromthemixtureofprimitivemantleanddepletedmantle.TheNdisotopesectionrevealssignificantdifferencesinNdisotopesbetweenthenortheratonandcentralcraton;comparedtothenorthcraton,thecentralcratonyieldsaNdmodelagethatisapproximately100Maolder,anditsεNd(t)valuesaremorenegative,indicatingthatthetwopartsofthecratonhavedifferentmantlesourceregions.DifferenttypesofgranitoidsaredistributedintheTanzaniaCraton,suchashigh-Kandlow-Algranite,ealc-alkalinegranite,peraluminousgraniteandtransitionaltypesoftonalite-trondhjemite-granodiorites(TTGs).Mostofthegranitoidsformedlaterthanthemarierocksinsyn-collisionandpostcollisionevents.

简介：北方中国古地台(NCC)的北边缘的中间的片断在Damiao-Changshaoying区域主要由变形太古代的Dantazi建筑群，PaleoproterozoicHongqiyingzi复杂andunmetamorphosedgabbro-anorthosite-meta-alkaline花岗石，以及变形迟了的Paleozoicmafic组成到granitoid岩石。～2.49GaDantazi复杂comprisesdioritic-trondhjemitic-granodoritic-monzogranitic片麻岩在角闪岩变形了到granulitefacies。石油化学的特征表明大多数岩石属于媒介--tohigh钾计算碱的系列，和显示Mg~#不到40，衰退权利的REE模式没有到在使primitivemantle正常化的蜘蛛图的显然积极的Eu异例，显然否定的Th，Nb，Ta和Ti异例，到-0.03,和弄空的披风的ε_(Nd)(t)=+0.65为agesT_(DM)=2.78-2.71Ga建模。在岩石成因论的学习显示岩石从从在一个大陆人边缘背景的再循环的外壳的mafic岩石的部分融化从弄空的披风和granitoid岩浆在mafic岩浆之间混合的magmatic被形成。2.44-2.41GaHongqiyingzi建筑群被变形mafic-granodioritic-monzogranitic片麻岩统治，显示到Dantazi建筑群的类似的石油化学的特征，对高钾也就是中等计算碱的系列，和mafic岩石在LILE，否定Th，Nb，Ta，Zr异例和积极Panomalies显示出明显的变化。并且另外的granitiod样品也展出否定Th，Nb，Ta，P和Ti异例。在Hongqiyingzi复杂表演的Allrocks没有Eu的衰退权利的REE模式异例。有ε_(Nd)的Themetamorphicmafic岩石(t)=-1.64不能是有granitoids的一个相同magmatic系列有(t)+3.19珍视到+1.94和2.55-2.52Ga的T_(DM)年龄的ε_(Nd)。Thesegranitic岩石从在一个弧形列岛的外壳的mafic岩石设置的少年的部分融化从弄空的披风和岩浆从在mafic岩浆之间的混血儿发源。11妈LatePaleozoic变形mafic摇的所有～3和相关花岗石的岩石显示出一个中等钾的calc-alkalinemagmatic进化系列，由高Mg~#，显然否定的Th�

简介：Guandishangranitoids与不同规模主要由各种各样的granitoid侵入组成包括Huijiazhuang侵入，Shizhuang侵入和Hengjian侵入，它在1906妈和1848妈之间被形成。根据地质并且petrologicalcharacteristics，这些granitoids能被分类进二个组：更早的gneissicgranodiorites和monzogranites，和以后巨大的leuco-monzogranites。他们的geochemical和Ndisotopic特征显示他们能作为剩余阶段与大陆人弧材料的一种亲密关系，并且与石榴石，辉石，角闪石和斜长石从复杂部分融化ofsupracrustal岩石被导出，例如沙的页岩和泥质岩。黑云母，长石和另外的矿物质在岩浆进化期间是最可能的fractionated。他们的来源可以与大陆人弧有一种亲密关系，并且granitoids能从主要syn-collisionaltolate-orogenic被导出构造环境，它可能与在在北方中国古地台的东方、西方的大陆块之间的最后的合并有关。

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简介：WhileattendanceatpreviousIGC'swasremarkable,themorethan7,000earthscientists,exhibitorsandguestswhometinFlorenceforthe32^ndInternationalGeologicalCongresssetanall-timerecordasthehighestnumberofparticipants.Theycamefrom120countriesand75%werenotItalian.Thisproportionofforeignattendeeswasthelargestever;inlinewithatrendofincreasingnonlocalparticipation,ittestifiestothevitalityandinternationalcharacteroftheIGCs.

简介：Severalpre-andpost-congressfieldtripswereorganizedinconnectionwiththe32ndInternationalGeologicalCongressheldinFlorence,Italy,duringAugust,2004.Oneofthese,thePrestigeFieldTrip(PR01--AtraversethroughCentralAsiaranges,fromtheIndianplatetotheKarakorum)lastedfor16daysfrom21Juneto6July.M.GaetanioftheUniversityofMilan(Italy)actedasLeaderandoverallOrganizer,withA.Zanchi(Univ.Milano-Bicocca),M.Q.Jan(Univ.ofPeshawar,Pakistan)andM.N.Chaudhry(PunjabUniversity,Pakistan)asAssociateLeaders.LocallogisticsweretakencareofbytheAdventureTours,Pakistan.

简介：南方Qinling构造的带(SQTB)在Shangzhou-Danfeng和Mianxian-Lueyang缝术之间被定位。在它的中间的片断有很多早中生代granitoidplutons，包括在在西南的东北，在中央部分的Huayang-Wulong-Laochenggranitoidplutons，在西北的Xibagranitoidpluton和Guangtoushan-Liubagranitoidplutons的Dongjiangkou-Zhashuigranitoidplutons。这些Indonisiangranitoids包含各种各样的规模mafic被外国领地包围的土地的一个团，它与他们的主人granitoids显示出有时清楚的边界和有时过渡的边界。这些granitoids也从low-Ktholeiite系列展出metaluminous到peraluminous系列，通常更高的Mg#和大量石油化学，通过mid-K和high-K，到shoshonite系列的计算碱的系列和支配的样品被归因于mid-K和high-K计算碱的系列。在Sr-Nd同位素的systematics和石油化学的详细分析表明可以有Indonisiangranitoidplutons的地区性起始的granitoid岩浆，包括Dongjiangkou-Zhashui，Huayang-Wulong-Laocheng，Xiba，和Guangtoushan-Liubagranitoidplutons，它被岩浆的混血儿在各种各样的度生产，并且起始的岩浆在SQTB从披风和更低的大陆人外壳(LCC)来源被导出。起始的granitoid岩浆进一步在他们的炮兵阵地期间与上面的外壳的材料从LCC，结晶化分别，和吸收做了与岩浆混合的岩浆在SQTB生产这些granitoidplutons。这些magmatism过程是最可能的发生在大陆下面边缘的弧和syn碰撞到碰撞以后的构造背景。

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简介：Sm-Ndisotopiccompositionsofeightlamprophyresamples,whichcomefromtheGezhengold-bearingshearzoneonwesternHainanIsland,aremeasured.TheSm-Ndisochronageis495.98±13.14Ma,(143Nd/144Nd)0=0.512094,εNd(t)rangesfrom+1.80to+2.00andTDMfrom982Mato1196Ma(average:1060Ma).Theauthorspointoutthatthewhole-rockSm-Ndisochronage(495.98±13.14Ma)reallyrepresentsthepetrogeneticageoflamprophyreandthetimeofmagmatismduringsubsequentsubduction.

简介：Ceriumisoneofmultivalentrearearthelements,whichcantransferfromtrivalencetotretavalenceatoxidizingenvironment.ThisprocessmaycausevariabledegreesoffractionationofCefromothertrivalentrearearthelements,andthusmayprovidespecificinsightintothegeologicalprocessesassociatedwithmarkedredoxomorphism.MultiplegeochemicaltracingofSr-Nd-CeisotopesareperformedonthefelsicandmaficintrusivesoftheNeoproterozoic(~800Ma)HuanglingcomplexlocatedattheeasternThreeGorges,SouthChina.TheintrusiverocksexclusivelyshowvariousextentsofnegativeCeanomalies.OntheεCe-εNdplot,mostsamplesfromthemaficintrusionsscatterwithinthesecondquadrant,whereasthosefromthefelsicintrusionswithinthefourthQuadrant.Bothofthetwogroupsexhibitrelativelylargerangeof?Ce(t)variationbutlimited?Nd(t)range,whichcauseadeviationfromthe'crustalarray'andrevealadecoupledNd-Ceisotopecorrelation.Theintermediate-felsicsuitehavevariedCe/Ce*ratiosbutbroadlyproximateεCe(t)values,indicatingthattheirnegativeCeanomaliesweregeneratedduringthemagmatism;onthecontrary,apositivecorrelationbetweenεCe(t)andCe/Ce*isobservedfortheintermediate-maficsuite,anindicationofanoriginofpost-magmaticalterationormetamorphismfortheirCeanomalies.Calculationofmodelage,theoccurrenceageofnegativeCeanomalies(TCe)fortheintermediate-maficsamplesinfersthatthealterationeventstookplace>350Ma.DatashowedthatnegativeCeanomaliesofthefelsicintrusionsmayreflectanincreaseofoxygenfugacityduringmagmaascending,ratherthananinheritancefromtheirsourcerocks.ThisexplanationimpliesthattheNeoproterozoicmagmatismoccurredatthecontinentalnucleusoftheYangtzeblockweredevelopingatageodynamiccontextofrapidlyregionaluplifting.

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简介：高纯净的N2被用来在离子交换树脂的离子纯化期间增加活动阶段流动率。这被执行改进同位素分离和纯化的效率，并且满足快速的multiple-collector-inductively联合的血浆团spectrometry(MC-ICPMS)的效率要求分析。为Cu同位素分离，我们的结果以煤气的流动率显示了那>60mL/min，色析法的山峰拓宽了的分离和恢复率减少了到<99.2%。在另一方面，在Cu山峰的重要变化都没以20mL/min的煤气的流动率被观察，恢复率决心是>99.9%。Cu同位素比率，由标准样品的括方法测量了，同意了在内的引用数据一???牡浡?????????祳据牡潢慮整???????????????ò作？？

简介：西准噶尔庙尔沟岩体主要包括钾长石花岗岩、角闪二长花岗岩和花岗闪长岩．它们有着相似的同位素和微量元素地球化学特性．Ⅰsr(300Ma)=0．7040～0．7045．而εNd(T)=+6．6-+8．4．模式年龄(TDM)大约分布在0．37-0．62Ga时间上和早古生代岛弧建造和洋壳的形成时间大致吻合．庙尔沟地区后碰撞花岗岩的特征．反应其源区是来自亏损地幔．可能是早古生代期间形成的洋壳和岛弧建造．西准噶尔地区的基底是年轻的地壳，古老地壳即使有也非常有限．

简介：Shadong沉积物是在东方Tianshanorogenic带，和存款的地质的特征发现的第一大规模钨存款显示深深地隐藏的花岗石身体与矿化作用是遗传上相关的。从Shadong的锆石的LA-ICPMSU-Pb年龄隐藏了在这获得的花岗石研究是239湡瑩楯獤吗？？