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：近年来,在我国的西南和西北地区发现了一批以沉积岩为主的微细浸染型金矿床,其地质特征类似于美国西部的卡林型金矿。找矿工作证明,中国是世界上产出卡林型金矿床最多的国家之一。根据作者对我国近20个卡林型金矿床的调查和研究,我国卡林型金矿床的主要特征是:

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：<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.

简介：“东胡林人遗址”位于北京市门头沟区斋堂镇东胡林村村西清水河北岸三级阶地上,形成于大约1万年前后,是一处重要的新石器时代早期遗址。自1966年被发现至今,先后历经了4个阶段,其中,1995年的再发现获得了一些重要的成果,2001-2005年开展的规模性的考古发掘,成果丰硕。1985年该遗址被公布为门头沟区文物保护单位,1995年被公布为北京市第二批地下文物埋藏区。为进一步展现东胡林人遗址的科学内涵及其文化价值,我们从综合研究、切实保护、规划定位、管理提升、公众参与等几方面提出了建议,并积极探讨如何以遗址开发利用为核心的文化旅游在实施当地乡村振兴战略过程中的引领作用。

简介：非洲S盆地是西非Iullemmeden盆地东南边缘的一部分，现有地质资料认为s盆地是一个向西南倾斜的单斜盆地、为初步查明该盆地的地质构造格架为评价盆地的含油气潜力提供依据，在s盆地展开了1：5万重磁调查。本文依据盆地的实测重力数据及已有地质资料，进行了数据处理与解释推断，在研究盆地不同深度空间的重力异常时发现，s盆地具有上下两层断裂系统：下层为一套控制盆地形成与发育的近南北向的基底断裂系统，是西非裂谷系一系列近南北向的地堑式盆地的组成部分；上层为一套有北东向与北西向断裂共同组成的盖层断裂系统（部分运动强烈的切入基底），这套断裂决定了盆地的最终形态并控制着油气流的运移通道和储存空间。