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

简介：本文介绍了北京砂石坑回填现状,分析了回填物的污染组分特征。以北天堂生活垃圾填埋场和老山建筑垃圾填埋场为例,分析了生活垃圾和建筑垃圾对地下水的影响程度。结合回填物的特点,提出相应的处理对策。针对已造成地下水污染的回填地区,提出科学的污染控制和治理方法。

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简介：根据冀南地区南宫凹陷构造发展演化历史特征，确定了南宫凹陷形成的动力学机制，即南宫凹陷是在裂陷动力学变形机制背景下形成的断陷盆地．特定的伸展构造背景决定了边界断裂滑脱深度的计算方法，由南宫凹陷边界断裂——明化镇断裂几何学和运动学特点，属典型的铲形正断层，结合I．Moretti关于铲形正断层控边盆地的滑脱深度和伸展量估算公式，估算出明化镇断裂的滑脱深度平均在8km以上，其数值与前人对华北地区深地震剖面所揭示的滑脱深度数据基本一致，从一个侧面反映了所取得数据的可靠性，这对该区油气勘探工作有一定的指导意义．

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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

简介：RamanpeaksofvarioushydratesintheH2O-NaCl-CaCl2systemhavebeenpreviouslyidentified,butaquantitativerelationshipbetweentheRamanpeaksandXNaCl(i.e.,NaCl/(NaCl+CaCl2))hasnotbeenestablished,mainlyduetothedifficultytofreezethesolutions.Thisproblemwassolvedbyaddingaluminapowdertothesolutionstofacilitatenucleationofcrystals.Cryogenic(-185oC)Ramanspectroscopicstudiesofalumina-spicedsolutionsindicatethatXNaClislinearlycorrelatedwiththetotalpeakareafractionofhydrohalite.Capsulesofsolutionsmadefromsilicacapillarywerepreparedtosimulatefluidinclusions.Mostoftheseartificialfluidinclusionscouldnotbetotallyfrozenevenattemperaturesaslowas-185oC,andthetotalpeakareafractionofhydrohaliteisnotcorrelatedlinearlywithXNaCl.However,thedegreeofdeviation(?XNaCl)fromthelinearcorrelationestablishedearlierisrelatedtotheamountofresidualsolution,whichisreflectedbytheratio(r)ofthebaseline"bump"area,resultingfromtheinterstitialunfrozenbrinenear3435cm-1,andthetotalhydratepeakareabetween3350and3600cm-1.Alinearcorrelationbetween?XNaClandrisestablishedtoestimateXNaClfromcryogenicRamanspectroscopicanalysisforfluidinclusions.

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.

简介：为加速中亚地区基础地质信息数据的共享与交流，全面对比中国西部（重点为新疆地区）与邻区大型金属矿床的成矿地质背景，加速查明新疆矿产资源的分布状况，为中亚地质工作者提供相关地质信息，建立中亚地区1：20万地质图数据库十分必要．

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？？

简介：OnOctober18,2018,theChinaGeologicalSurveylaunchedaprojectoftheNationalKeyResearchandDevelopmentProgramofChina,entitled"PredictionandDeepExplorationDemonstrationofGoldPolymetallicDepositsintheJiaodongandLiaodongAreaswithintheNorthChinaCraton".Forthisproject,WulongandBaiyun-XiaotongjiapuyiinJiaodong,aswellasthenorthernZhaopingbeltsofLiaodong,werechosenasoreprospectingdemonstrationareas(Fig.1).

简介：本文介绍了Kirchhoff积分法叠前深度偏移和波动方程叠前深度偏移两种偏移方法,并通过对Marmousi数据模型和实际数据资料处理,对比叠前深度偏移成像与叠后时间偏移成像和常规叠加剖面的应用效果。实际结果表明：对于速度横向变化剧烈的复杂地质体,叠前深度偏移成像精度更高,适合于城市活动断层的高精度探测。

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简介：该文简要介绍了世界主要地震带的分布区域和历次地震所造成的巨大损失，介绍了地震的深度分布范围及成因类型。

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.

简介：准噶尔盆地南缘西湖背斜近地表结构复杂,表层岩性变化大,目的层紫泥泉子组顶界埋深4000m,提高深度域速度精度困难。精确的速度建模是该区通过叠前深度偏移准确落实构造形态的关键。网格层析反演通过共成像点道集上的残余时差全局更新速度模型,提高速度模型精度,更适合山前带深度域模型迭代更新。研究及应用结果表明,该技术应用于类似山前带叠前深度偏移成像处理,可提高速度模型精度,得到的深度域成像精度高于以往叠前深度偏移处理结果。

简介：M7.0Lushan地震触发了的s山崩的一个巨大的数字。印射的山崩危险性是很重要的。证据(悲痛)和逻辑回归(LR)的重量方法广泛地为LSM(印射的山崩危险性)被使用了。然而，限制仍然存在。悲痛能够估计每个因素的不同的班的影响，但是忽视在因素之间的关联。当它不能够评估不同的班的影响时，LR能在因素之中分析关系。这份报纸为LSM建议LR和悲痛的一个联合方法，利用他们的单个优点并且克服他们的限制。1289山崩的库存被使用：70%为为确认训练并且留下是选择随机的。11个山崩条件因素在模型被采用，结果用操作特征(巨鸟)曲线的接收装置被验证。结果证明LR悲痛模型比LR模型有更好的精确性，生产在有0.802成功的价值的曲线下面的一个区域并且0.791预兆，比LR模型的高(0.715成功并且0.722预兆)。悲痛和LR的联合方法能为印射的导致地震的山崩危险性提供精确性的有希望的水平，这因此被结束。