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简介：UNAVCOsupportsgeoscienceresearchat113USacademicMemberinstitutions,andanother104AssociateMemberinstitutionsincludeinternationaluniversities,laboratories,observatories,academiesofscience,andamuseum.ThisdiversemembershipsharesUNAVCO’spurposeathomeandabroad,givingUNAVCOglobalreachinadvancinggeodesy.Sincethemid-1980s,moderngeodesyhasevolvedintoacutting-edge,multi-facetedtoolboxwithremarkablydiverseresearchandreal-worldapplications,includingstudiesandobservationorforecastingofsolid-Earthhazards,thedynamicsoftheatmosphere,climate,near-Earthspaceenvironment,andofkeyenvironmentalparameterssuchaswaterstorage,soilmoisture,andseaandlake-levelchanges.UNAVCOoperatesfacilitiesonbehalfoftheU.S.NationalScienceFoundationtosupportinvestigatorswhousegeodetictoolsacrossalloftheseEarthandatmosphericdomains.UNAVCOhasbuiltanumberoflargedenseregionalnetworksofGPSstations,includingtheEarthScopePlateBoundaryObservatoryinNorthAmerica,theCOCONetCaribbeannetwork,TLALOCNetinMexico,GNETinGreenland,andANETinAntarctica.Goingforward,UNAVCOplanstofederatethePlateBoundaryObservatory(USA),TLALOCNet(Mexico),andCOCONet(Caribbean)GPSnetworksastheNetworkoftheAmericas,withupgradestostate-of-the-art,multi-sensor,multi-GNSSobservations.WhileUNAVCOcommunityscientistsactivelyengageinusingspaceandterrestrialgeodetictechniquestostudygeodynamicsatallscales,thisproliferationofcontinuousnetworksisthebasisforasuiteofrecentcontributionsthatfocusonimproveddailypositioningtosenseEarth’selasticresponseandotherperturbationstoloadingbyatmosphericandsurfacewater,oceans,andice.Day-to-dayandsub-dailyvariationsintheGPSverticalandhorizontalcorrelatetoincreasinglywell-understoodshort-termmassvariability,suchasmonsoonalfloodinginBangladesh,sub-dailychangesintidalloadingatcontinentscales,day-to-daysurfacewaterandicestorageinthewesternU.S

简介：TherearethreetypesofshalegasresourcesinChina.Theresourcesarepresentinlargeamountsandarewidelydistributed.Marinefacies,transitionalfaciesandcontinentalfaciesresourceseachaccountforathird.Basedonresourcedistributions,therearemanywellspenetratedintotheSinian,Cambrian,Ordovieian,Silurian,Devonian,CarboniferousandPermianstrataoftheYangtzeplateanditsperiphery,theNorthChinaCratonandtheTarimBasin.ManyyearsofexplorationhaveindicatedthatthemarineSilurianLongmaxishalegasiswidelydistributedinsouthChinaandhasbeenindustrializedinitsproductionintheSiehuanbasin.TheshalegasfromtheCambrianNiutitangFormationandtheSinianDoushantuoFormationareimportantdiscoveriesinYichang,HubeiandZhenba,Shanxi.TherearealsoshalegasresourcesfoundwithintransitionalfaciesandcontinentalfaciesindifferentareasinChina.The"twoelementenrichmenttheory"hasbeensummarizedduringtheexplorationprocessofSilurianmarineshalegasintheSichuanBasin.Inaddition,horizontaldrillingandfracturingtechnologiesupto3500mindepthhavebeendeveloped.BasedontheunderstandingofshalegasaccumulationinacomplextectoniczoneoutsidetheSichnanbasin,apreliminarysummaryoftheformationofthe"conversefaultsynelinecontrolreservoir"and"paleoupliftcontrolreservoir"modelhasbeenconstructed.Thedominanttheoryof"Trinity"shalegasenrichmentandthehighyieldofthe"deepwaterLuPengxiangsedimentaryfaciesbelt,structuralpreservationconditionsandoverpressure"issummarized.Guidedbytheabovetheories.AnyelwellinGuizhouandEyangyelwellinHubeiweredrilled."Fourstorey"oilandshale"gasisfoundinthePermianQixiagroup,theSilurianShiniulanFormation,theLongmaxiFormationandtheOrdovicianBaotaFormationinAnyelwell.GoodshalegashasbeengoundintheCambrianNiutitangformationinianDoushantuoformationinEyangyelwell.Thispaperaimstosummarizeandreviewthemainprogress,theoreticaltech

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简介：摘要：在Weibei煤田基于煤脉石的系统的分析，例如岩石学的特征，化学作文，滋养的元素，有害元素，和转变，并且与黄土高原和国家有害材料的土壤元素内容背景价值相比控制标准，我们断定在Weibei煤田的煤脉石有巨大的潜力被用作泥土化肥。

简介：OnDecember15,2008,theInternationalResearchCenteronKarstundertheAuspicesofUNESCO(hereinafterreferredasIRCK)wasformallyestablishedinGuilin,China.ItisalsothefirstcategoryⅡcenterconcerninggeosciences.Sinceitsfoundation,ithasorganized11internationalsymposia,attractedover200foreignscientistsfrommorethan40countriesforacademicexchange,andsigned16internationalcooperationagreementswith14countries.Ithasplayedanactiveroleforinternationalexchange,setfirmfoundationforcooperativeprojects.

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简介：Continentsubductionisoneofthehotresearchproblemsingeoscience.Newmodelspresentedherehavebeensetupandtwo-dimensionalnumericalmodelingresearchonthepossibilityofcontinentalsubductionhasbeenmadewiththefiniteelementsoftware,ANSYS,basedondocumentaryevidenceandreasonableassumptionsthatthesubductionofoceaniccrusthasoccurred,thesubductionofcontinentalcrustcantakeplaceandtheprocesscanbesimplifiedtoadiscontinuousplanestraintheorymodel.Themodelingresultsshowthatitiscompletelypossibleforcontinentalcrusttobesubductedtoadepthof120kmundercertaincircumstancesandconditions.Atthesametime,thesimulationsofcontinentalsubductionunderasingledynamicalfactorhavealsobeenmade,includingthepullforceofthesubductedoceaniclithosphere,thedragforceconnectedwithmantleconvectionandthepushforceofthemid-oceanridge.Theseexperimentsshowthatthedragforceconnectedwithmantleconvectioniscriticalforcontinentsubduction.

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简介：ＡＲｅｓｅａｒｃｈｏｎＦｒａｃｔａｌＤｉｍｅｎｓｉｏｎａｎｄＮｏｎｌｉｎｅａｒＤｙｎａｍｉｃＭｏｄｅｌｏｆＸｉｎｔａｎＬａｎｄｓｌｉｄｅ，ＣｈｉｎａＺｈｏｕＣｕｉｙｉｎｇ；ＴａｎｇＬｉａｎｓｈｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＥａｒｔｈＳｃｉｅｎｃｅ，...

简介：Taolinglead-zjncdepositsarelocatcdinthcdismantlingfaultbeltonthenorthflankofDayUnshanrockmasslLiniangcountry,Hunanprovincc.Theyarelargescaledcpositscontrollcdbythedisman-tlingfautbclt’Theycosistoffivcindustrialorcbodics-DujiachongVinkongsban,Shangtangcbong,GuanshanandDuanshanorebody,andstrctchmorctl

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简介：<正>1IntroductionThemainproductionofYabulaisaltlakewasoriginalsaltandrecycledsaltmanyyearsago.Afterdecade’sproduction,thesalelakeresourceismoreandmoredeficient.Glauber’ssaltandmagnesiumsaltareconcentratedinbrinenow.Itcouldaffectthequalityofthesalt.Inrecentyears,researchhaddonemuchworkto

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简介：TheInternationalCentreonGlobal-scaleGeochemistry(ICGG)isaresearchorganizationtoprovidesystematic,longtermandauthoritativeglobalforsustainingnaturalresourcesgeochemicalobservationdataandenvironmentsintheworld.

简介：ThreelogarithmiclinearequationsbetweenDMeV/Land[mNaCl],andtherelationshipofDMeV/LversusF/ClorK/NamoleratioshavebeenestablishedbytheexperimentsofthepartitioningofPbandZnbetweengraniticsilicatemeltandaqueousfluid.Theseresultshavebeenusedtoquantitativelystudysomeessentialproblems,suchasthepossibilityanddegreeofPb-Znmineralizationinthesystemofgraniticmagmaandhydrothermalfluid,andtheinfluenceoftherelativecontentsofalkaliandvolatilesonthePb-Znmineralizationinthesamesystem.Somenewpointshavebeenputforwardinthispaper.

简介：Since2011,certainadvanceshavebeenmadethroughtheresourceinvestigation,metallogenesisresearch,miningsupervisionandenvironmentalprotectionofion-adsorptiontyperareearthelement(REE)depositinSouthChina.Firstly,someprogresshasbeenmadeinREEprospectinginJiangxi,Guangdong,GuangxiandYunnan.REEdepositsarenotonlyfoundwithintheweatheringcrustsofgranitesandfelsicvolcanicrocks,butalsowithintheweatheringcrustsofepimetamorphicrocksandbasicmagmaticrocks.Secondly,themethodsofexploration,delineatingorebodiesandcalculationofreserveshavebeenimproved,whichintuitivelyreflectthethickness,REEcompositionandvalueofweatheringcrust.Thirdly,therelationshipbetweenREEsandweatheringdegreeandtheruleofdistribution,migrationandenrichmentofREEsintheweatheringprofilewassummarizedthroughtheanalysisofbigdata,whichcanpredictthemetallogenetichorizonofREEs.Fourthly,amethodforquick,accurateanddynamicinvestigationoftheREEdeposithasbeenestablishedbyusinghighresolutionremotesensingtechnology.Finally,therelationbetweentheproductionstatusofREEminesandwaterpollutionhasbeenrevealedbasedonlong-termhydrochemicalmonitoringdataofriversandwellsinminesandsurroundingareas.