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16 个结果
  • 简介:TheJamesM.HarrisonAwardforOutstandingAchievementwasestablishedbytheIUGSExecutiveCommitteein2004tohonorindividualswhohaveservedtheUnioninanextraordinaryfashionforalongperiodoftime,andwhohavenorecognizedpositionasanofficeroftheUnion.TheawardisnamedforthelateJamesM.Harrison,aninternationallyknownanduniversallyrespectedCanadiangeologist(GeologicalSurveyofCanada)whowasoneofthefoundingfathersoftheIUGSanditsfirstPresident(1961-1964).

  • 标签: 学术成果 学习经历 研究方向 JAMES M.Harrison 地质学家
  • 简介:35Ma-AnImportantNaturalPeriodicityinGeologicalHistory:ConceptofNaturalCrisisandItsPossibleCauseShiXiaoying(DepartmentofGeo?..

  • 标签: Ma. NATURAL cycle. NATURAL CRISIS GALACTIC
  • 简介:本报讯北京市地下空间与可持续发展论坛日前在北京地质大厦召开。论坛旨在强调"城镇化建设,地质工作要先行",让地质工作全方位、立体化地对接生态文明建设,服务美丽北京世界城市建设。随着北京城市规模的不断扩大,土地资源日益稀缺,向地下拓展发展空间成为必然之路。地下空间资源的开发利用活动是在地质体中进行的,因此地质体的性质对地下空间资源开发利用具有制约作用。

  • 标签: 地下空间资源 北京市 平方 地质工作 生态文明建设 空间资源开发
  • 简介:本刊讯北京从本世纪初开始成规模地应用浅层地温能为冷,热源的热泵集中采暖、制冷工程,到2007年9月底,全市已有1050万平方的建筑用上浅层地温能供暖制冷。这些工程既有国内目前运行最大的地源热泵系统工程——中石化管理干部学院地源热泵空调系统、天湖国际会议酒店岩土源热泵空调系统、国家北方苗木基地地源热泵空调系统、用友软件园地源热泵及冰蓄冷中央空调系统等,又有地下水源热泵系统,

  • 标签: 浅层地温 建筑用 地源热泵空调系统 平方 北京 中央空调系统
  • 简介:本刊讯(段金平)近日,在北京召开的北京市建筑节能大会上提出,2011年北京将完成400万平方的浅层地温能应用面积。出席会议的北京市住房和城乡建设委员会主任隋振江介绍,“十一五”期间,北京市可再生能源建筑应用的规模不断扩大,共实施了38个国家级可再生能源应用示范项目,总建筑面积达265万平方。目前,北京市应用可再生能源的建筑物已有2500万平方

  • 标签: 浅层地温 北京市 平方 可再生能源 建筑面积 建设委员会
  • 简介:Thereisageneralconsensusthatmostophiolitesformedabovesubductionzones(Pearce,2003),particularlyduringforearcextensionatsubductioninitiation(Shervais,2001;Stern,2004;WhattamandStern,2011).'Supra-Subductionzone'(SSZ)ophiolitessuchasthewell-studiedTethyanophiolites,generallydisplayacharacteristicsequentialevolutionfrommid-oceanicridgebasalts(MORBs)toislandarctholeiities(IATs)orbonites(BONs)(Pearce,2003;DilekandFurnes,2009,2011),whichweregeneratedinsequencefromthedecompressionmeltingofasthenosphericmantleandpartialmeltingofsubduction-metasomatizeddepletedmantle(SternandBloomer,1992;DilekandFurnes,2009;WhattamandStern,2011).However,ophioliteswithMORBand/oroceanic-islandbasalt(OIB)affinitiesarerare,andtheiroriginandtectonicnaturearepoorlyunderstood(Boedoetal.,2013;Saccanietal.,2013).ItisinterestingthatthecompositionoftheseophiolitesfromthecentralTibetanPlateau(CTP)isdominatedbyMORBsandminorOIBsandadistinctlackofIATsandBONs,whichisinconsistentwithmostophiolitesworldwide(RobinsonandZhou,2008;Zhangetal.,2008).Butthegenerationandtectonicnatureoftheseophiolitesarestillcontroversial.*Inthisstudy,wepresentnewgeochronological,mineralogicalandSr-NdisotopicdatafortheChayongandXiewumaficcomplexesinthewesternGarzê-Litangsuturezone(GLS),atypicalPaleo-TethyansuturecrossingtheCTP(Fig.1).TheTriassicophioliteinthewesternGLShasbeendescribedbyLietal.(2009),whofoundthatitmainlyconsistsofgabbros,diabases,pillowbasaltsandafewmetamorphicperidotites.TheophiolitehasbeentectonicallydismemberedandcropsoutinTriassicclasticrocksandlimestonesastectonicblocks.TheChayongandXiewumaficcomplexesaregenerallyregardedasimportantfragmentsoftheTriassicophiolites(e.g.,Jin,2006;Lietal.,2009).ZirconLA-ICP-MSU-Pbagesof234±3Maand236±2MacanbeinterpretedasformationtimesoftheChayongandXiewumaficcomplexes,respectively.Thebasalts

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  • 简介:近日通过评审的《北京平原区浅层地温能资源地质勘查报告》表明,北京平原区浅层地温能资源潜力折合0.662亿吨标准煤,可供暖面积达9.59亿平方,可满足2020年北京市总体规划中总供暖面积的要求。该项目由北京市财政出资,北京市地勘局承担,历时3年,项目组调查了北京平原区6400平方千范围内3~150的浅层地温能资源的特征和分布规律、研究评价浅层地温能资源的资源量,并进行了地源热泵适宜区划,成果总体达到国际领先水平,被评为优秀级。

  • 标签: 北京平原区 浅层地温能 地质勘查 总体规划
  • 简介:查汗通古凹陷为库什盆地北西端一个山间小凹陷,位于富铀古生代花岗岩基底之上。中侏罗统西山窑组赋存有厚度巨大的超低品位砂岩型铀矿化。从铀源、含矿建造、构造演化、氧化带、铀矿化特征等方面进行论述,认为该区铀源丰富。西山窑组属一套冲积扇体系的含碳碎屑岩建造,砂体发育,含矿层为第二、第三、第四等3个岩性段。构造演化上存在中侏罗世、渐新世两次沉降接受沉积过程,及晚侏罗-始新世、中新-全新世两次抬升剥蚀过程。西山窑组第一、第五岩性段发育面状潜水氧化带,第二、第三、第四等3个岩性段局部发育氧化带’铀矿化产于氧化。还原过渡带附近,多为砂岩型,少量泥岩型。成矿后压实与构造挤压作用使砂体胶结致密,现有技术条件下难以地浸开采铀。

  • 标签: 库米什 查汗通古 凹陷 铀成矿特征 西山窑组
  • 简介:TheHuashixiaareaintheMadoiCounty,QinghaiProvince,westernChinaisoneofthemostimportantareasforthestudiesoftheformationandevolutionoftheA’nyemaqenmélangezoneduetothewellexposed,relativelycompletetectonostratigraphicsuccessions.However,thetimingandevolutionaryprocessoftheA’nyemaqenpaleo-oceanhaslongbeenpoorlyunderstood.Recently,weobtainedabundantradiolariansfromthesiliceousrocksoftheMaerzhengFormationofthismélangezoneinHuashixia.Total19speciesin10radiolariangenerahavebeenidentified.TheybelongmainlytotheAlbaillellaria,Spumellaria,Entactinaria,andLatentifistularia.Fourradiolarianassemblagezonesareestablished,including:thePseudoalbaillellarhombothoracata,Pseudoalbaillellascalprata,Ruzhencevispongusuralicus,andFollicucullusbipartitus-Follicucullussp.cf.F.ventricosuszones.RadiolarianfaunalcorrelationssuggestalateArtinskian–earlyKungurianageandlateCapitanian–earlyWuchiapingianageforthefirsttwozonesfromthelowerpartandthelasttwozonesfromtheupperpartsoftheMaerzhengFormation,respectively.AllradiolariansaretypicalofdeepwaterelementslivingindeepoceansinlowlatitudesduringthePermian.Previously,theradiolariansofEarlyCarboniferoustoEarlyPermianageandfusulinidsofEarly–MiddlePermianagehavealsobeenreportedfromtheA’nyemaqenmélangesuccessions.ThecombinationofthenewlyfoundradiolarianswiththepreviouslyreportedfaunalandmicrofloralassemblagesaswellasradiometricagesobtainedfromthesamestratigraphicunitsindicatesthattheA’nyemaqenpaleo-oceanmayhaveopenedinitiallyduringtheEarlyCarboniferous,expandedfromtheEarly–MiddlePermian,reacheditsacmeintheearlyLatePermian,shrunkduringthelatestPermiantoEarlyTriassic,andeventuallywasclosedintheMiddleTriassic.

  • 标签: 放射虫硅质岩 阿尼玛卿 中国西部 二叠纪 花石峡 玛多县
  • 简介:在这份报纸,我们集中于在广告1556M~8.5Huaxian地震的震央的区域开发的山崩的特征,并且在SEWeiheGraben讨论他们的关系到活跃正常差错,华中。在有地调查的联合,从分析高分辨率的遥远察觉到的形象和数字举起模型(DEM)的结果表明那:山崩从小规模的碎片/岩石下降在学习区域范围观察了到大规模岩石雪崩的(i);(ii)山崩主要在30的陡峭的斜坡之上被开发?????????‰???ㄠ吗??

  • 标签: 山体滑坡 正断层 震中区 华中地区 地震 滑县
  • 简介:OnOctober18,2018,theChinaGeologicalSurveylaunchedaprojectoftheNationalKeyResearchandDevelopmentProgramofChina,entitled"PredictionandDeepExplorationDemonstrationofGoldPolymetallicDepositsintheJiaodongandLiaodongAreaswithintheNorthChinaCraton".Forthisproject,WulongandBaiyun-XiaotongjiapuyiinJiaodong,aswellasthenorthernZhaopingbeltsofLiaodong,werechosenasoreprospectingdemonstrationareas(Fig.1).

  • 标签: China HAS launched PROSPECTING DEMONSTRATION evaluate
  • 简介:InordertoinvestigatetheevolutionofShiquanhe-Yongzhu-Jialiophioliticmélangebelt,thegabbrosfromnewdiscoveredZhongcangophioliticmélangearestudiedthroughpetrology,whole-rockgeochemistry,zirconU-PbdatingandLu-Hfisotope.Thegabbrosinvestigatedinthispapercontaincumulategabbroandgabbrodike,andtheyhaveundergonegreenschist-amphibolitefaciesmetamorphism.Thechondritenormalizedrareearthelement(REE)patternsofmostoftheserocksshowflattypeswithslightlylightREE(LREE)depletionandtheN-MORBnormalizedincompatibleelementsdiagramsindicatedepletioninhighfieldstrengthelements(HFSE)(Nb,Ta)andenrichmentinlargeionlithophileelements(LILE).Thesegabbroshaveislandarcandmid-oceanridgebasaltaffinities,suggestingthattheywereoriginatedinanoceanicbackarcbasin.WholerockgeochemistryandhighpositiveεNd(t)valuesshowthatthesegabbroswerederivedfrom~30%partialmeltingofaspinellherzolitemantle,whichwasenrichedbyinteractionwithslab-derivedfluidsandmeltsfromsediment.U-Pbanalysesofzirconsfromcumulategabbroyieldaweightedmeanageof114.3±1.4Ma.Basedonourdataandpreviousstudies,weproposethatanintra-oceanicsubductionsystemandbackarcbasinoperatedintheNeo-TethyOceanofcentralTibetduringMiddleJurassicandEarlyCretaceous,resemblingmodernactiveintra-oceanicsubductionsystemsinthewesternPacific.

  • 标签: 蛇绿混杂岩带 地球化学 西藏中部 辉长岩 岩石学 俯冲带