学科分类
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21 个结果
  • 简介:DefinitionofanewgeologicperiodfortheIastintervaloftheProterozoicEon,theEdiacaran,wasrecentlyratifiedbytheIUGS.TheEdiacaranPeriodisthefirstProterozoicperiodtoberecognizedonthebasisofchronostratigraphiccriteria,thefirstinternationallyratified,chronostratigraphicallydefinedperiodofanyagetobeintroducedinmorethan120years,andthefirsttobedefinedbya“goldenspike”intheSouthernhemisphere.

  • 标签: 埃迪卡拉生物种群 地理周期 古生代 地层年代
  • 简介:Dalingheornisliweii情报。etsp。nov,一只新enantiornithine鸟在东北中国从早白垩纪Yixian形成被收集。它是在中生代鸟中的一只高度专业化的异种扬抑抑格脚的第一个记录。有shorthypocleidum的塑造Y的叉突与另外的enantiornithines的不同。未成年者掌部比专业柔韧、长掌部。一条长多骨的尾巴与dromaeosaurids并且这样类似于那些的V形臂章20尾的vertebrae创作了,再加亮在鸟和非鸟的theropods之间的进化关系。保存得很好的小翼羽毛和一只异种扬抑抑格脚为Dalingheornis的树木的习惯提供充分证据。

  • 标签: 白垩纪 古生物学 鸟类 中生代
  • 简介:TheFirstInternationalCouncilforScience(ICSU)RegionalMeetingforAsiaandthePacificwasheldfromApril25-27,2005inKualaLumpur,Malaysia.ThemeetingwashostedbytheMinistryofScience,TechnologyandInnovationofMalaysiaandtheAcademyofSciencesMalaysia.WelcomingremarksweredeliveredbyTanSriDatukDr.AhmadZaharudinIdrus,President,AcademyofSciencesMalaysiaandProf.ThomasRosswall,ExecutiveDirector,ICSU.HisExcellencyDato'SriDr.JamaludinJarjis,MinisterofScience,TechnologyandInnovation,Malaysiaopenedthemeeting.About40participantsattendedthemeeting,representingnationalscienceacademiesfromtheAsiaPacificandinternationalscientificunionsthatareactiveintheregion.TheInternationalUnionofGeologicalSciences(IUGS)wasrepresentedbythePresident,Prof.ZhangHongren.Dr.JoyPereira,ChairoftheIUGSCommissiononGeoscienceforEnvironmentalManagement(IUGS-GEM)alsoattendedthemeetingasanObserver.

  • 标签: 国际地质会议 学术研究 发展规划 社会需求 服务意识
  • 简介:摘要:从Ganzhou,江西省和他们忍受的胚胎的骨骼的上面的白垩纪的二个elongatoolithid恐龙鸡蛋被描述。他们在中国与胚胎的骨骼代表第一个oviraptorosaurian鸡蛋并且提供oospecies能被相关到某些恐龙taxon/taxa的第一个例子。二颗卵与在从在卵壳的宏观结构和微观结构的一样的区域的一样的地平线的一个女oviraptorosaurian骨盆内的卵的对一样,并且能被指oospecies,Macroolithusyaotunensis赵,1975。胚胎的骨骼的保存部分的形态学显示他们可能被oviraptorid,从广东省的Heyuanniahuangi或密切相关的oviraptorosaurian生了,它也可能在迟了的白垩纪在Ganzhou区域被过了。二个鸡蛋的胚胎的骨骼不在一样的发展中阶段。在鸡蛋之一,保存vertebrae的Heyuanniahuangi很好被骨化,显示它就被孵。

  • 标签: 胚胎骨架 晚白垩世 江西 恐龙蛋
  • 简介:Withregardtothenumberofmineralspeciesfirstdis-coveredinaparticularcountry,Italyranksfourth,beingprecededonlybyUSA,RussiaandGermany.Importantrock-formingmineralslikeanalcime,anorthite,anortho-clase,antigorite,celadonite,diopside,dolomite,forsterite,humite,leucite,lime,lizardite,magnesiochlo-ritoid,magnesite,nepheline,andsepioliteareamongthe240speciesfirstdiscoveredinItaly.OthersignificantfirstItalianfindingsaresomeimportantindexmineralsoftheUHPmetamorphism(ellenbergerite,phosphoel-lenbergerite,magnesiodumortierite,andmagnesiostau-rolite;secondoccurrenceofcoesite)whichwerediscov-eredinthewell-knownandfirstreportedUHPoutcropoftheDora-MàiramassifItalyisalsothenativelandofabout30zeolitesandofthetwomostabundantmodernspecies:balangeroiteandcarlosturanite,whicharerock-formingasbestos-likemineralsofserpentinitesinthewesternAlps.

  • 标签: 钙长石 火山石 意大利 漂移 矿物发现
  • 简介:Inthefirsthalfyearof2018,therewerechangesinChina'seconomic,industrialstructureandthechangesingovernment'spolicyonlandandmineralresources.China'sgeologicalexplorationiscontinuedtomaintainatrendofthegrowth.Thefundinvestmentingeologicalexplorationdeclinedandtheimpetusforinvestmentininitialexplorationwasinsufficient.Theminingmarketshowedagooddevelopmenttrendandthesocialinvestmentdepictedaslightrise.Inthefirsthalfoftheyear,theinvestmentsinhydrogeologicexploration,environmentalgeologyexplorationandgeologicaldisasterinvestigationincreasedontheyear-onyearbasis.

  • 标签: PROGRESS in China's GEOLOGICAL EXPLORATION FIRST
  • 简介:石块的类Mesocupes的三新石块种抓着标志,M。angustilabialissp。nov,M。latilabialissp。nov。并且M。领子是sp。nov,从内部蒙古的Jiulongshan形成被描述,中国。这些新种类现在是在象在世界上的最旧的一样的中国的石块Mesocupes的开始的三个记录。这发现也扩大这个类的地理分发从对东亚中央。另外,基于最后到的长度的比率倒数第二腹比从Karabastau形成的种类,Daohugou忍受石块的床的年龄可能中间的侏罗记是比Karatau集合并且因而的旧的发泄显然低的新甲壳虫的仪式。

  • 标签: 新物种 九龙山组 中国 地质学
  • 简介:Naturalgashydrates(NGH)isoneofkeyfuturecleanenergyresources.Itsindustrializeddevelopmentwillhelpremitthehugedemandofglobalnaturalgas,relievetheincreasingpressureoftheenvironment,andplayavitalroleinthegreensustainablegrowthofhumansocieties.Basedonnearlytwodecades'studyingonthereservoircharacteristicsintheSouthChinaSea(SCS)andtheknowledgeofreservoirsystem,theChinaGeologicalSurvey(CGS)conductedthefirstproductiontestonanoptimaltargetselectedinShenhuareaSCSin2017.Guidedbythe"three-phasecontrol"exploitationtheorywhichfocusedonformationstabilization,technologiessuchasformationfluidextraction,welldrillingandcompleting,reservoirstimulating,sandcontrolling,environmentalmonitoring,monitoringandpreventingofsecondaryformationofhydrateswereapplied.Thetestlastedfor60daysfromMay10^thwhenstartingtopump,droppressureandignitetowellkillingonJuly9^th,withgasproductionof3.09×10^5m^3intotal,whichisaworldrecordwiththelongestcontinuousdurationofgasproductionandmaximalgasyield.ThissuccessfultestbringsasignificantbreakthroughonsafetycontrolofNGHproduction.

  • 标签: Natural gas HYDRATE (NGH) Production test
  • 简介:鉴于高精确性和可预测性,高分辨率的顺序地层学广泛地被使用了给探索上油并且得到突出的适用的结果。这篇文章拿第一层,上面的秒submember,Shahejie()从Pucheng的形成()是的油矿根据核心日志数据的全面研究在水库学习分析高分辨率的顺序地层学的应用程序的一个例子。第一,这个区域的外形分析揭示沉积沉重的溪流在尺寸减少并且由于蒸发和传播损失消失的发生的相应终端扇子系统。模型包括终端扇子的分成三部分的带状配列进feeder,支流,和basinal地区。第二,electrofacies被记载得好的分析做然后匹配,沉积外形由核心分析定义。在目标区域以内描绘主要沉积外形协会和depositional环境的四electrofacies被定义(隧道,落后沉积物,湖或泛滥平原,和溢出扔)。第三,相关关联基于高分辨率的顺序地层学被建立。由观察基因序列的叠的安排,stratigraphic周期的不同规模能被识别。在规模和持续时间以内,stratigraphic周期作为基因序列,基因顺序集合,和次要的周期被称为。

  • 标签: 层序地层分析 沙河街组 濮城油田 高分辨率层序地层学 基因序列 终端系统
  • 简介:LateMiddleTriassictoearlyLateTriassicinsectsfromArgentinahavebeenpreviouslydescribedfromtheBermejoandCuyanaBasinswheretheyhavebeenrecoveredfromtheIschichuca-LosRastrosandPotrerillos-CacheutaFormations,respectively.Theinsectfaunadiscussedhereinwascollectedduringfieldstudiesin1986/1987fromtheLlantenessection(NoriantoRhaetian?LateTriassic),whichissituatedintheMalargueBasininsouthernMendozaprovince.TheinsectremainswerefoundintheupperpartoftheLlantenessection(LlantenesFormation),whichisbuiltupoftwocoarsening-upwardscyclesreflectingadeltaicprogradationofafluvialintoalacustrineenvironment(lowerpart),succeededbyrepeatedprogradationsintoafloodplain-dominatedenvironment(upperpart;withfindsofinsects,conchostracans,fishremains,plantfragments,anddriftedlogs).ThenewfindsrepresenttheyoungestTriassicinsectrecordsdescribedfromArgentinaandevenfromSouthAmericainitsentirety.ThereisonlyonecontemporaneousfossilassemblageinGondwana:intheClarence/MoretonBasin(AberdareConglomerate;LateNorian)inAustralia.ThenewTriassicinsectsincludeanimpressionofanisolatedMecopterida-likewing(Mendozachoristavolkheimerigen.etsp.nov.;Mendozachoristidaefam.nov.),coleopteranelytraofthePermosynidae(Ademosynerosenfeldisp.nov.andAdemosynellantenesensissp.nov.)andotherisolatedbodyfragments.ThisnewLateTriassicentomofaunafromArgentinaisofconsiderableimportanceinthereconstructionofthebioticrecoveryofcontinentalenvironmentsinGondwanaafterthecatastrophicmassextinctionattheP/Tboundary.

  • 标签: 晚三叠世早期 阿根廷 南美洲 盆地 昆虫区系 冈瓦纳大陆
  • 简介:InMayandJulyof2017,ChinaGeologicalSurvey(CGS),andGuangzhouMarineGeologicalSurvey(GMGS)carriedoutaproductiontestofgashydrateintheShenhuareaoftheSouthChinaSeaandacquiredabreakthroughoftwomonthscontinuousgasproductionandnearly3.1×10^5m^3ofproduction.ThegashydratereservoirintheShenhuareaofChina,ismainlycomposedoffine-grainedclaysiltwithlowpermeability,andverydifficultforexploitation,whichisverydifferentfromthosediscoveredintheUSA,andCanada(bothareconglomerate),Japan(generally,coarsesand)andIndia(fracture-filledgashydrate).Basedon3Dseismicdatapreserved-amplitudeprocessingandfineimaging,combinedwithlogging-while-drilling(LWD)andcoreanalysisdata,thispaperdiscussestheidentificationandreservoircharacterizationofgashydrateorebodiesintheShenhuproductiontestarea.Wealsodescribethedistributioncharacteristicsofthegashydratedepositsandprovidedreliabledatasupportfortheoptimizationoftheproductionwelllocation.ThroughBSRfeaturerecognition,seismicattributeanalysis,modelbasedseismicinversionandgashydratereservoircharacterization,thispaperdescribestworelativelyindependentgashydrateorebodiesintheShenhuarea,whicharedistributedinthenorth-southstripandtendtobethickerinthemiddleandthinnerattheedge.Theeffectivethicknessofoneorebodyisbiggerbutthedistributionareaisrelativelysmall.ThemodelcalculationresultsshowthatthedistributionareaofthegashydrateorebodycontrolledbyW18/W19isabout11.24km^2,withanaveragethicknessof19mandamaximumthicknessof39m,andthedistributionareaofthegashydrateorebodycontrolledbyW11/W17isabout6.42km^2,withanaveragethicknessof26mandamaximumthicknessof90m.

  • 标签: Shenhu area Gas HYDRATE Production test
  • 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?

  • 标签: Altyn Tagh 差错 正常差错 Jinta Nan 掸人差错 Heihe 河 paleoseismic 事件
  • 简介:以便改进3D的效率近表面的速度模型大楼,我们用地震第一到达的时间开发一个剥去层的方法。在一个普通中点(CMP)集合以内的速度模型被假定被成层进薄层,并且每层的速度与深度线性地变化。最高的层的厚度和速度在一个CMP集合用最小偏移量的第一到达的数据被估计。然后,最高的层被剥去,第二层成为新最高的层。在把最高的层的效果从以前的第一到达的数据移开以后,新第一到达的数据被获得然后过去常估计第二层的参数。以这种方式,速度模型,是被考虑在一个CMP地点,是从顶的造的layer-by-layer到底部。近表面的速度模型当时是的A3D形成了根本使用速度模型CMP地点。在剥去层的方法能习惯于的合成、观察的地震数据表演的测试造好近表面的速度模型因为静态的修正,和它的计算速度比格子断层摄影术的快约百倍。

  • 标签: 近地表速度模型 剥离方法 地震数据 三维 初至时间 CMP道集