简介：OnJune2011,theBeijingResearchInstituteofUraniumGeology,anInstitutewithintheChinaNationalNuclearCorporation(CNNC),andtheDepartmentofGeology&MiningCNNCcarriedoutaprojectScientificDrillingforDeepMetallogenicResearchintheXiangshanLargeUraniumOreField.AyearlateronJune21,theproject,representingthefirstscientificdrillingofChina’suranium,wasofficiallylaunched,andsuccessfullycompletedonJune17,2013.A2818.88mofdrillingdepthhasbrokenthepreviousrecord1200mofexplorationdepth.TheXD-35DBdrillingmachinedevelopedbyChinaGeo-EquipmentCorporationistheChina’sfirstAC-VFDDirectDriveTopDriveCoreDrill.Ithasgreatlyimproved

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简介：<正>ONSOUTHERNSTRETCHOPTHES-NTECTONICBELT,CHINAChenGuanghaoandWeiZhoulin(ChangshaInstituteofGeotectonic,AcademiaSinica,Changsha,410013,Hunan,China)S-Ntectonicbelt,southstretching,boundingbeltItcanbeinferredfromthegeophysicaldata,linearstructures,tectonicevolu-tionhistoryandmetallogenythattheS-NtectonicBeltstretchesfurthersouthinadifferentdi-rectionandmannerafterinterceptedbytheRedRiverFault,Thestretchingsegmentistheim-portanttectonicboundaryinIndo-AsiaandassiminlatestheS-Ntectonicbeltwithsomediffer-ences.

简介：Inthefirsthalfyearof2018,therewerechangesinChina'seconomic,industrialstructureandthechangesingovernment'spolicyonlandandmineralresources.China'sgeologicalexplorationiscontinuedtomaintainatrendofthegrowth.Thefundinvestmentingeologicalexplorationdeclinedandtheimpetusforinvestmentininitialexplorationwasinsufficient.Theminingmarketshowedagooddevelopmenttrendandthesocialinvestmentdepictedaslightrise.Inthefirsthalfoftheyear,theinvestmentsinhydrogeologicexploration,environmentalgeologyexplorationandgeologicaldisasterinvestigationincreasedontheyear-onyearbasis.

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简介：SeismicPvelocitystructureisdeterminedfortheupper500kmoftheinnercoreandlowermost200kmoftheoutercorefromdifferentialtraveltimesandamplituderatios.ResultsconfirmtheexistenceofagloballyuniformFregionofreducedPvelocitygradientinthelowermostoutercore,consistentwithironenrichmentneartheboundaryofasolidifyinginnercore.Pvelocityoftheinnercorebetweenthelongitudes45oEand180oE(quasi-EasternHemisphere)isgreaterthanorequaltothatofanAK135-Freferencemodelwhereasthatbetween180oWand45oE(quasi-WesternHemisphere)islessthanthatofthereferencemodel.Observationofthisheterogeneitytoadepthof550kmbelowtheinnercoreandtheexistenceoftransitionsratherthansharpboundariesbetweenquasi-hemispheresfavoreithernoorveryslowinnercoresuperrotationoroscillationswithrespecttothemantle.DegreeoneseismicheterogeneitymaybebestexplainedbyactiveinnercorefreezingbeneaththeequatorialIndianOceandominatingstructureinthequasi-EasternHemisphereandinnercoremeltingbeneathequatorialPacificdominatingstructureinthequasi-WesternHemisphere.Variationsinwaveformsalsosuggesttheexistenceofsmaller-scale(1to100km)heterogeneity.

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简介：Separationtechnologyofrareearthelements(REEs),asthecriticalstepintheseparationprocess,hadlongbeenfraughtwithtechnicaldifficulty.AresearchprojectconductedbyBaotouShiboRareEarthExtraction&EquipmentCo.Ltd.,BaotouREEResearchInstitute,andBaotouSteel&REEGroupHi-TechCo.Ltd(InnerMongolia),hassuccessfullysolvedtheproblemusingacentrifugalextractorandadvancedtechniquestoachieveakeybreakthrough.ThekeydeviceofthewholeproductionlinecontainsCTL-500FBcentrifugalextractorsanddigitalflowsystemequipment.Employmentofanautomaticcontrollingsystemanditsfullyfunctionaloperationsystem,alongwithvarioussupportivefacilities,fulfilstheseparationprocessesforvariousrareearthmaterials.Comparedwithconventionalbox-typeseparationtechnology,thisnewapproachsignificantlyimprovesthestirringintensity,thusimprovingproduction

简介：Naturalgascontaininghydrogensulphide(H2S)hasbeenfoundinseveralpetroliferousbasinsinChina,suchastheSichuanBasin,BohaiBayBasin,OrdosBasin,TarimBasin,etc.NaturalgaswithhigherH2Scontents(H2S＞5%mol.)ismostlydistributedinboththegasreservoirsofDukouhe,Luojiazhai,PuguangandTieshanpo,whichbelongtotheTriassicFeixianguanFormationinthenortheasternSichuanBasinandthoseoftheKongdian-ShahejieformationsinthenortheasternJinxianSagoftheJizhongDepression,BohaiBayBasin.IntheSichuanBasin,theH2Scontentsofnaturalgasaverageover9%andsomecanbe17%,whilethoseoftheBohaiBayBasinrangefrom40%to92%,beingthenoneofthegasreservoirswiththehighestH2Scontentsintheworld.Basedondetailedobservationandsampleanalysisresultsofatotal5000mofcorefromover70wellsintheabove-mentionedtwobasins,especiallysulfurisotopicanalysisofgypsum,brimstone,pyriteandnaturalgas,alsowithintegratedstudyofthegeochemicalcharacteristicsofhydrocarbons,itisthoughtthatthenaturalgaswithhighH2Scontentsresultedfromthermochemicalsulfatereduction(TSR)reactions.Amongthem,thenaturalgasintheFeixianguanFormationresultedfromTSRreactionsparticipatedbyhydrocarbongas,whilethatintheZhaolanzhuangoftheJinxianSagbeingtheproductofTSRparticipatedbycrudeoil.DuringtheconsumptionprocessofhydrocarbonsduetoTSR,theheavyhydrocarbonswereapttoreactwithsulfate,whichaccordinglyresultedinthedrycoefficientofnaturalgasincreasingandthecarbonisotopesbecomingheavier.

简介：Arecentinitiativeemergingfromtheminingindustryhasledtodevelopmentofapractical,robust,andquitewidelyapplicablewayofassessingcontributiontosustainabilitythathascometobeknownastheSevenQuestionstoSustainability(7QS).Itisapplicableatboththeprojectlevelandforassessmentscoveringthefullmixofhumanactivitieswithinbroadregions.

简介：摘要：在中国支持干净的煤资源的合理发展和使用，数据在上地区性并且在中国煤的硫，砷和另外的有害元素的年龄分发广泛地被收集，为内容测试了，并且分析。在西北的中国的煤被描绘由对低极其硫的底层；在北中国的太原形成的煤主要有高硫的内容；山西形成的被低硫煤主要描绘；并且在南部的中国的晚二叠的煤有全面的更高的硫内容；另外的区域有低硫煤。在中国的煤的体积的有害踪迹元素的平均内容类似于在北美洲的煤和世界的其余部分的相应内容，而各种各样的元素的内容(Hg，Sb和Se)在到在外壳中的相应百分比的大小是不同的。元素Cr的平均内容，Se，公司，，U，而在对在N中国的早二叠的年龄近来含碳的煤的Hg和CI的平均内容最高，在在S中国的晚二叠的煤的Br在这个国家评价第一。在早、中间的侏罗记煤的Mn的平均内容在NW中国是更高的。在一些煤的有害元素的高内容应该在煤的发展和利用引起特别担心两个。

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简介：采用专项地质测量、高精度磁测、地面伽马能谱测量、遥感解译等方法,结合以往资料,在四川省若尔盖开展铀矿勘查工作。在已有工作基础上,通过对控矿主要素的研究,进行物化遥深部信息集成,再结合放射性信息,深化成矿规律的认识,建立具有若尔盖特色的深部勘查模型,更好的体现地质科技的引领作用和对找矿实践的推动作用。

简介：将一个矿床的产出抽象化为一个随机信号的发生,由此导出一递推微分方程组,解之得普阿松分布。证明矿床的产出过程是一个普阿松过程,进而用Γ—分布表述了其参数λ,引出了负二项分布,给出了一个完整的推导过程。

简介：断层传播褶皱是断层相关褶皱中最重要的类型之一,它一般形成于逆冲断层中。当断面的扩张速度小于滑移速度时,逆冲岩块运动较快,内部聚集应变能,而在断层面扩张的前方就会形成褶皱加以调节,这类褶皱称为断层传播褶皱。经过许多的地质学家研究认为这是沿断层面向上变宽的三角形分布式剪切的调节过程,而三角剪切区主要由断层的上顶点所决定。这种褶皱最早是Hardy和Ford发现并且成功的建立了此种褶皱的几何数字模拟模型。由于断层传播褶皱的形成主要受三角剪切区的控制,因此主要研究三角剪切区。

简介：<正>AfterstudyingsystematicallyPetrology,Mineralogy,Petrochemistry,REEgeochemistryandstrontium,sulphur,leadisotopeofthealkali-richgraniteprophyrydistribuledextensivelytheYangtzeplatfromwesternmargin’salkali-richgraniteporphyrywepointoutthatthealkali-richgraniteporphyryhavethepropertiesofnewintrusiveages,Rangeoftheisotopeageisform36Mato51Ma,theybelongtotheHimalayadate,Mainmineralcomponetsofthealkali-richgraniteporphyryconsistofk-fcldspar(35~45x),quartz(36x±)plagioclase(15x±)andbiotitc(10x±).Accessorymineralsoftherockbelongtotypeof

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简介：WhileattendanceatpreviousIGC'swasremarkable,themorethan7,000earthscientists,exhibitorsandguestswhometinFlorenceforthe32^ndInternationalGeologicalCongresssetanall-timerecordasthehighestnumberofparticipants.Theycamefrom120countriesand75%werenotItalian.Thisproportionofforeignattendeeswasthelargestever;inlinewithatrendofincreasingnonlocalparticipation,ittestifiestothevitalityandinternationalcharacteroftheIGCs.