简介：<正>OXIDESANDTRACEELEMENTSOFTHECARBONIFEROUSCARBONATEROCKINTIANSHANMT.,CHINAZhangQinhua,QinQingxiangandWeiZhouling(ChangshaInstituteofGeotectonics,AcademiaSinica,Changsha,410013,Hunan,China)oxide,traceelement,carbonaterock,Carboniferous,TianshanMt.TheCarboniferouscarbonaterockwithcomplicatedcompositionandvariousrocktypesandlithofaciesdevelopswellinTianshanMt.,China,andplaysanimportantroleinthestudyoftectonicsandmetallogenyinthearea.Thecontentandvariationcharacteristicsofmainpxidesandelementsareillustratedherebasedonagreatamountofgeochemicaldata.

简介：贝古山沼泽地，在水位经历了期刊变化，在长江边躺，并且它的主导的植物是Phragmitescommunis，Phalarisarundinacea和蓼lapathifolium。以便在贝古山沼泽地的生态系统学习氮和磷的分发特征，作者在Phragmitescommunis，Phalarisarundinacea和蓼lapathifolium测量了全部的氮和全部的磷的内容，并且在有不同植物种类的沼泽地土壤的氮和磷的内容。另外，作者调查了各种各样的植物的影响在上空间、季节(春天/秋天)在沼泽地的氮和磷的分布玷污。在Phalarisarundinacea的氮和磷的内容比在一样的部分的另外的二植物种的那些显著地高。在沼泽地的磷的第二等的污染主要源于Phalarisarundinacea。Phragmitescommunis有效地在湿季节在沼泽地土壤移走氮和磷。蓼的能力移开氮的lapathifolium在植物的3种类之中是最低的。这些调查结果提供一个理论基础让植物种类的选择恢复生态环境并且为清除的时间和深度的选择河边沼泽地上的淤泥。

简介：在雪坑的重金属Ba，Pb，Cu，Zn和公司的集中从累积区域在2005年9月收集了东方Rongbuk冰河(6523ma.s.l)躺在科莫朗马山的北斜坡上，诱导地旁边是坚定的co

简介：

简介：从5件磷灰石样品和4件锆石样品的分裂轨道标明日期证据，和建模的时间温度热历史自从迟了的侏罗记白垩纪，显示那(150-106Ma)，博格达山的uplift过程能被划分成热进化的四个阶段：150-106,75-65，44-24和13-9妈。在44-24妈前，冷却的率和博格达山的南部、北的片断的高举的率是几乎一样，证明Mt.Bogda高举是一个全面过程。自从44-24妈，山的南部、北的片断高举。Bogda显示出差别。在42期间-11妈，博格达山的北片断在一个稳定的阶段，与冷却的率，0.03℃/妈和高举的率正在是0。001mm/a。马夫罗姆到礼品博格达山的北片断在一个快速的冷却并且高举的阶段，与冷却的率，5.72℃/妈和高举的率正在是0.19mm/a。然而，自从26妈，博格达山的南部的片断在一个快速的冷却并且高举的阶段，与凉爽的忘恩负义的人1.24℃/妈和高举的率在26-9期间正在是0.041mm/a妈；4。从9妈的88℃/妈和0.163mm/a到现在为止。

简介：Manysmallmountainglaciershavebeenreportedundergoingstrongshrinkage,anditisthereforeimportanttounderstandhowtheyrespondtoclimatechange.Theavailabilityoftopographicmapsfrom1962,LandsatTMimageryfrom1990andASTER(AdvancedSpaceborneThermalEmissionandRadiometer)imageryfrom2006andfieldinvestigationofsomeglaciersallowacomprehensiveanalysisofglacierchangebasedonglaciersizeandtopographyonMt.Bogda.Resultsinclude:(1)anoveralllossofaglacierizedareaby31.18±0.31km~2or21.6%from1962to2006,(2)amarkeddependenceofglacierareashrinkageoninitialsize,withsmallerglaciersexperiencinghighershrinkagelevels,(3)thedisappearanceof12smallglaciers,(4)astrikingdifferenceinarealossbetweenthesouthernandnorthernslopesof25%and17%,respectively.Asubsetoftheinvestigatedglaciersshowsthatthearea57.45±0.73km2in1962reducedto54.79±0.561km~2in1990and48.88±0.49km~2in2006,witharelativeareareductionof4.6%during1962–1990,and10.8%during1990–2006.Thecorrespondingvolumewasteincreasedfrom6.9%to10.2%.Threereferenceglacierswereinvestigatedin1981andrevisitedin2009.Theirterminusexperiencedamarkedrecession.MeteorologicaldatafromstationsaroundMt.Bogdarevealsthatglaciershrinkageiscorrelatedwithwinterwarmingandanextensionoftheablationperiod.Precipitationonthenorthwestsideoftherangeshowsamarkedincrease,withaslightincreaseonthesoutheastside.

简介：

简介：

简介：Basedonremotesensingdata,fieldinvestigationandtrenchmeasurementalongthepiedmontfault(Wujumengkou-Dongfengcun)ofMt.Serteng,theverticaldisplacementratehasbeenfoundtobe0.88～1.83mm/asincethelateperiodoflatePleistoceneand0.89mm/asincethemiddleperiodofHolocene.Usingtheprogressiveconstrainingmethod,fivepaleoearthquakeeventshavebeendistinguishedfromtwolargetrenchessinceHolocene.Theyoccurred9000±1300aB.P.,6500±500aB.P.,5770aB.P.,4200±300aB.P.and3250±250aB.P.,respectively.FromthelateperiodoflatePleistocenetothebeginningofHolocene,somepaleoearthquakeeventsmayhavebeenmissedduetoavarietyofreasons.Allofthepaleoearthquakeeventsdisplayedclusteringcharacteristicstoacertainextent.Thefirstdusterwasoccurredaround8900aB.P.,thesecondclusteroccurredbetween5700～6500aB.P.andthelastclusterwasoccurredin3250～4200aB.P.Theintervalbetweenthefirstclusterandthesecondclusterwasabout2400awhilethatbetweenthesecondclusterandthethirdclusterwasonly1570a.Noearthquakeeventshavecutthegroundsurfacealongthisactivefaultsegmentsince3250aB.P.Thelapsetimeismorethantherecurrenceintervalbetweentwopaleoearthquakeclusters.Therefore,thereisapotentialriskforarecurringearthquakealongthisactivefaultsegment.

简介：Calibrationsbetweensodium(Na+)concentrationsfromaMt.Loganicecoreandsealevelpressure(SLP)seriesshowthatNa+concentrationsarecloselycorrelatedwiththeautumn-time(SeptemberOctober-November)Aleutianlow(AleuLow).AdeepeningoftheAleuLowstrengthensthetransportofsea-saltaerosolsfromtheNorthPacifictotheMt.Loganregion.TheMt.LoganNa+recordisusedtodevelopa292a(1688～1979)reconstructionoftheAleuLowrevealingadramaticintensificationofatmosphericcirculationovertheNorthPacificregionsincethe20thcentury.MeanSLPoftheAleuLowwasabout1hPalowerduringthe20thcenturythanduringpriorperiods.ThestrongestdeepeningoftheAleuLowappearedinthe1950s.SignificantcorrelationsarealsofoundbetweentheMt.LoganAleuLowproxyseriesandthePacificdecadaloscillation(PDO)andPacificcirculation(PC)indexduringthe20thcentury.Evolutionaryspectralanalysisoftheproxyrecordshowssignificantperiodicitiesfrom15to30aconsistentwithPDOfluctuationsandthebidecadaloscillationofNorthPacificatmosphere-oceancirculation.Aperiodof11aintheAleuLowrecordmaybeassociatedwiththeSchwabe11-acycleofsunspotactivity.AdditionallongericecorerecordsfromthisregionwillaidintheeffortstofurtherunderstandtheclimaticchangeovertheNorthPacificregion.

简介：

简介：利用大地电磁测深技术探测了云南玉溪盆地的电性结构及可能的断裂构造分布。在与地质构造近垂直的方向,布设了两条测线进行大地电磁观测,应用Rebocc二维反演方法获得了玉溪盆地两条测线的视电阻率剖面。结果显示,低阻体厚度的变化趋势与盆地第四系沉积层平均厚度的变化类似,在盆地西侧,厚度较深,高阻和低阻界面变化较陡。自西向东,低阻体厚度逐渐减小,高低阻界面变化趋势趋缓。总体来说,低阻体厚度比已有资料给出的沉积层厚度要深,导致这一结果的原因一方面可能是盆地沉积层厚度在不同的区域变化较大,另一方面也可能和沉积层下的岩层富含水资源有关。

简介：

简介：Oil-gasremotesensinginformationisobtainedfromsatelliteTMdatathroughgraphictreatmentinthelightofthehydrocarbon-microseepagetheory.Theninetargetareas(ofthreetypes)selectedonthisbasisconcidewellwiththeoccurrenceofnaturalgasesandhavebeenprovedbysubsequentprospecting.Plantsinthetargetgreasarecharacterized.asaresultofhydrocarbon-microseepage,byabnormalspectralfeatureswiththeabsorptionpeaksofchlorophyllshiftingtowardbluelight,reflectivityintherangeofvisiblelightincreasingandreflectivityinthenearinfraredregiondecreasing.

简介：ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｒｅａｒｅｍａｎｙｎｕｍｅｒｉｃａｌｍｏｄｅｌｉｎｇｓｔｕｄｉｅｓｏｆｔｏｐｏｇｒａｐｈｙｆｏｒＭＴｆｉｅｌｄｓａｐｐｅａｒｅｄｉｎｔｈｅｐａｓｔｌｉｔｅｒａｔｕｒｅ，ｂｕｔｍｏｓｔｏｆｔｈｅｗｏｒｋｓａｒｅ２－Ｄｒｅｓ...

简介：当前，大多数MT(magnetotelluric)数据仍然在稀少的调查线上被收集并且因为域工作费用，解释了使用2D倒置方法，工作区域环境等等。然而，有从总是导致错误地地质的解释的3Dgeoelectrical结构的MT数据的一些2D解释限制。在这份报纸，我们使用了3D倒置方法解释MT稀少的线数据。在模型测试，稀少的行数据是从一个测试模型产生并且处理了使用3D的MT完整的信息数据结合坡度倒置代码。倒置结果证明这个倒置方法合理、有效。同时，我们证明为有不同元素参数的倒置结果，由阻抗张肌数据和tipper数据的联合倒置的结果对测试模型更精确、更靠近。

简介：ThispapersummarisesthegeologicalfeaturesoftheLarderello-TravaleandMonteAmiataareas,wheretheworld'smostancientexploitedgeothermalfieldsarelocated.Inbothgeothermalareas,threeregionaltectonostratigraphicelementsaredistinguished,fromthetop:(a)LateMiocene-PlioceneandQuaternary,continentaltomarinesediments;(b)theLigurianandSub-Liguriancomplexes,whichincluderemnantsoftheJurassicoceanicrealmandofthetransitionalareatotheAdriaticmargin,respectively;(c)theTuscanUnit(TuscanNappe),composedofsedimentaryrocksrang-inginagefromLateTriassictoEarlyMiocene.Thesub-stratumoftheLarderelloandMonteAmiataareasisreferredtoastheTuscanMetamorphicComplex.Thisismainlyknownthroughdrillingofgeothermalwells.Thiscomplexiscomposedoftwometamorohicunits:theupperMonticiano-RoccastradaUnitandthelowerGneissComplex.TheMonticiano-RoccastradaUnitconsistsof(fromtoptobottom):theVerrucanoGroup,thePhyllite-QuartziteGroupandtheMicaschistGroup.TheGneissComplexconsistsonlyofpre-Alpinepoly-metamorphicgneiss.TheTuscanMetamorphicComplexisaffectedbycontactmetamorphismbyPlio-Quater-narygranitoidsandtheirdykeswarms.Hydrothermalphenomenastilloccurinbothgeothermalfields.TheLarderello-TravaleandMt.AmiatageothermalfieldsarelocatedintheinnerNorthernApennines,inanareathathasbeensubjecttoextensionsincethe?Early-Mid-dleMiocene.Twomainextensionaleventsarewellexpressedinthestructuresofthegeothermalareas.Thefirstextensionalevent(?Early-MiddleMiocene)deter-minedthetectonicdelaminationoftheLigurianUnitsandTuscanNappe.Thesecondextensionalevent(LateMiocene-Present)ischaracterizedbyhigh-anglenor-malfaultsboundingtheNeogenetectonicdepressionsofsouthernTuscany.

简介：摘要：矿厂采区采选矿石产能13万t／d，其矿石年采剥总量巨大，达1．32亿t／a。需采用十几台大型电动挖掘机和配套的R170、MT4400AC等多台大型电动轮汽车进行采矿作业。电动轮汽车均采用交一直流电传动方式，以柴油机为动力带动主发电机发出交流电，整流为直流电后送至装在车轮中的直流电机，通过轮马达上行星齿轮减速后驱动车辆行驶。然而，由于电动轮汽车发动机远程预润滑系统故障率高，易出现干摩擦、动力不足、振动大、噪音大、过早烧损等问题，导致发动机无法运转。

简介：利用大地电磁测深法（MT）反映地质体的电性差异，首先可以确定地质体的空间展布、地质结构和构连；而由于地质体电阻率受地热水影响而降低，进而据此圈定地热水的分布范围；并在此基础上可以进一步探讨地热形成机制。在华北地台地热勘探中MT法取得了较好的勘探效果。