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简介：关于矿物质的70-80子类型包括的一组披风矿物质在西藏从podiformchromitite被发现，中国。恢复矿物质包括钻石，coesite，moissanite，wustite，Fe-silides和一种新矿物质，luobusaite。这些矿物质的AM是hand-pickedfrom重矿物质在luobusaite的谷物作为有本国的硅或作为有本国的硅和Fe-Si阶段的共生交互生长的包括的主人矿物质的ophiolite.The的披风橄榄岩podiformchromitite分开。Luobusaite作为不规则的谷物发生，与在尺寸的0.1-0.2公里，由很有细密纹理的总数组成。矿物质是在颜色的钢灰色，金属性的光泽，并且不透明。实验公式(基于2为Si)是Fe_(0.83)Si_2，根据luobusaite的化学成分。X光检查粉末衍射数据：斜方晶的系统，空格组Cmca，a=9.874(14)一，b=7.784(5)一，c=7.829(7)一，Z=16。

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简介：AttheIstOrdinarySessionofthemergedIUGS/IGCCouncil,heldinFlorence,Italy,inconjunctionwiththe32ndInternationalGeologicalCongress(IGC),thefollowingnewofficerswereelected:

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简介：TwoGSSPs(GlobalStandardStratotypeSectionandPoint)fortheOrdovicianSystemwerededicatedinSwedenon25&26May2003.TheceremonieswerewellorganizedandwellattendedandincludednotonlytheunveilingofformalplaquesdescribingtheGSSPsbutalsothedrivingof“goldenspikes”.

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简介：CentralAsiaencompassesnearlyadozencountriesandconsistsofseveralorogeniccomplexes,oneofwhich,theAltaids,isca.1000kmwideand7000kmlong,stretchingfromtheUralMountainsintheWesttothePacificOceanintheEast.ItiscomposedofseveraltectoniccollagesthatwerecreatedbyoceanicsubductionandcontinentalcollisionfromtheLateProterozoictotheendofthePalaeozoic.Thelastdecadewitnessedtheestablishmentoftwocompetingtectonichypothesesforthedevelopmentoftheseorogeniccomplexes.Thefirstviews

简介：ProjectNo.506MarineandNonmarineJurassic，ProjectNo.508Volcano,CollapseandFaultActivity--“YoungScientistsProject”，ProjectNo.509PalaeoproterozoicSupercontinentsandGlobalEvolution，ProjectNo.510A-typeGranitesandRelatedRockthroughTime，ProjectNo.511SubmarineMassMovementsandtheirConsequences.

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简介：Theinterdisciplinaryfieldrespondstotheneedtobetterof"MedicalGeology"understandtherelationshipsbetweenhumanhealthandoursurroundingenvironment.Theinfluenceofearthresources,naturalenvironmentalfactorsandland-useonhumanhealthhaslongbeenrecognized,datingbacktoancientRomeandPeru'sIncacivilization.Todaylinksbetweenthenaturalenvironmentandhealthcanbefoundthroughouttheworld.Thisreviewintroducesthehistoricalcontextofthisparticulartypeofresearch,contraststhedirectgeologicalandindirectnaturalhazardinfluencesonhealthasaframeworkofstudy,elaboratesonpathwaysofelementalaccumulationinthebodyandprovidesexamplesofspecificgeochemicalbehavioursanddiseasesthatareoftenassociatedwitheithertoomuchornotenoughofcertainelementswhichcomprisetheEarth.

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简介：PelagicmanganesenodulesfromtheEastPacificOceanhavebeenstudiedusingpolarizing,scanningelectronandtransmissionelectronmicroscopes.Ithasbeenrevealedthatthemanganesenodulesarecomposedofcoresandstromatolitecoatings.Thestructuresandtexturesofthesenodulesarepeculiartooncolite.Consequently,thepelagicmanganesenodulesaremanganeseoncolites.Basedonthestromatolitesinthecoatings,themanganeseoncolitesfromtheEastPaci-ficOceancanbedividedintotwotypes.Oneissmoothonsurfaceanddenseinside.ItscoatingsarecomposedmainlyofMinima.Theotherhasaknobbysurfaceandislooseinternally.ItscoatingsconsistmainlyofAdmirabilis.TheTEMinvestigationhasalsorevealedthatthecon-structorsofthemanganeseoncolitesareultra-microbes.TheMinimaisconstructedbyMiniactinomyceschinensissp.nov.andtheAdmirabilisisbuiltbySpirisosphaerosporapacificasp.nov.

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