简介：Terreneuvian时代(541-521妈)也是为在华南的metallogenesis的一个重要时期，作为被Ni瞬间polymetallic层的普遍出现在更深的斜坡盆背景在先前的浅站台边缘和充实V的黑页岩上代表。在这研究，我们测量了Ni瞬间polymetallic层的Re-Osisochron年龄(Songlin，Niuchang，Sancha，Chuanpengwan)，V富有的黑页岩(Bahuang)，和在在贵州和湖南省的基础Niutitang形成的非产金属的黑页岩(Shuidong)，华南。Ni瞬间polymetallic层和充实V的黑页岩有类似的Re-Osisochron年龄，建议产金属的矿石的这二种类型的并发的免职。这个建议与由使用直接作为一个stratigraphic标记位于这些产金属的层下面的榴状的磷钙土床的传统的stratigraphic关联一致。而且，产金属的矿石和非产金属的黑页岩有类似的起始的187Os/1880.8-0.9的O比率，与热水的活动的次要的贡献为主导的海水起源争论。而且，Re-Os同位素的数据也暗示那Ni瞬间和V矿石可能源于一样的来源。我们建议产金属的矿石的空间分发能被non-sulfidicanoxic-suboxic楔(NSASW)的开发在以前的平台边缘在斜坡盆和sulfidic楔解释。深水的Upwelling温和地减少的、器官的富有的NSASW，在V，(V)优先地被归结为V(IV)，并且是由有机金属的复杂形成从海水移开的第一横断。作为结果，V富有的黑页岩在Yangtze站台的斜坡盆扔。进sulfidic站台边缘的深水的进一步的运动导致Ni瞬间polymetallic层形成。

简介：Suoerkuduke()Cu(瞬间)沉积物，在有Xilekuduke的一样的metallogenic带()Cu瞬间沉积物，位于Armantai()东方Junggar的北边缘上的岛弧带，西北中国。七个辉钼矿的同位素的分析从存款取样的金来和锇被用来决定矿化作用的年龄。317.7的七点的isochron年龄

简介：通过对白山斑岩型钼矿床深部钻孔的7件辉钼矿进行Re-Os同位素测年分析,获得辉钼矿模式年龄为（223.5±3.2）Ma~（227.5±3.1）Ma,辉钼矿等时线年龄数据为（223.2±2.7）Ma（MSWD=0.64）,成矿时代为晚三叠世早期。结合对已有年龄资料的归纳和分析认为,白山钼矿的成矿作用与东天山觉罗塔格地区印支期花岗质岩浆活动有关,该矿床测年结果代表了东天山地区印支期一次成矿作用的高峰。

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简介：TheDachangtin-polymetallicdistrict,Guangxi,China,isoneofthelargesttinorefieldsintheworld.Bothcassiterite-sulfideandZn-CuskarnmineralizationarehostedintheMid-UpperDevoniancarbonate-richsedi-mentsadjacenttotheunderlyingCretaceousLongxianggaigranite（91-97Ma）.TheLamoZn-CudepositisatypicalskarndepositinthedistrictandoccursatthecontactzonebetweentheUpperDevonianlimestoneandthegranite.Theoremineralsmainlyconsistofsphalerite,arsenopyrite,pyrrhotite,galena,chalcopyrite,andminormolybdenite.However,theageofmineralizationandsourceofthemetalsarenotwellconstrained.Inthisstudy,weusethemolybdeniteRe-Osdatingmethodandin-situPbisotopesofsulfidesfromtheLamodepositforthefirsttimeinordertodirectlydeterminetheageofmineralizationandthetracingsourceofmetals.SixmolybdenitesamplesyieldedamoreaccurateRe-Osisochronageof90.04-1.1Ma（MSWD--0.72）,whichismuchyoungerthanthereportedgarnetSm-Ndisochronageof95±11MaandquartzfluidinclusionsRb-Srisochronageof99±6Ma.ThisageisalsointerpretedastheageofZn-Cuskarnminer-alizationintheDachangdistrict.Further,inthisstudywefoundthatin-situPbisotopesofsulfidesfromtheLamodepositandfeldsparsinthedistrict＇sbiotitegraniteandgraniticporphyrydikeshaveanarrowrangeandanoverlapofPbisotopiccompositions（206pb/204pb18.417-18.594,207pb/204pb=15.641-15.746,and208pb/204pb=38.791-39.073）,suggestingthatthemetalsweremainlysourcedfromCretaceousgraniticmagma.

简介：Datingofmetallicoredepositshasbeenoneoftheproblemsconcernedwithbyoregeologistsformanyyears.TheestablishmentoftheRe-OsIsotopeLaboratoryattheInstituteofRockandMineralAnalysis,ChineseAcademyofGeologicalSciences,hasprovideduswithanewtechniquetocarryoutgeochronologicalstudiesofmolybdenumores.AsoneofthemostimportantRe-bearingminerals,molybdenitecontainsalmostnocommonosmium,but^187Oswasderivedcompletelyfromdecayof^187Re,with^187OscontentasthefunctionofRecontentinthemineral.AnID-ICP-MStechniquehasbeenusedinthisstudy,andRe-Osisotopicagesofseverallargemolybdenumdepositsofdiffer-enttypesfromtheEastQinlingmolybdenumbelthavebeendetermined.ItisindicatedthattheHuanglongpucarbonatitevein-typemolybdenum-(lead)deposithasaRe-OsagecorrespondingtoIndosinian,whiletherestporphyry-typemolybdenumdepositsandporphyry-skarn-typemolybdenum-(tungsten)depositshaveRe-OsagescorrespondingtoYenshanian.

简介：Themulti-stageintrusionsofintermediate-acidmagmaoccurintheBangpuminingdistrict,thepetrogenicagesofwhichhavebeenidentified.Thetimesandsequencesoftheiremplacementhavebeencollatedandstipulatedindetailinthispaperbyusingthelaserablation-inductivelycoupledplasma-massspectrometry(LA-ICP-MS)zirconU-Pbdatingmethod.Theagesofbiotitemonzogranitethatwereformedbeforemineralizationinthesouthwestofthisminingdistrictare70±1Ma(meansquareofweighteddeviates(MSWD)=9.5,n=8)and60.60±0.31Ma(MSWD=3.8,n=16),whichbelongtothelateCretaceous-earlyPaleoceneinage.Thatmeans,theyareproductsofanearlytectonicmagmaticeventofthecollisionbetweentheIndianandAsiancontinentals.Theagesofore-bearingmonzograniteporphyryandore-bearingdioriteporphyriteare16.23±0.19Ma(MSWD=2.0,n=26)and15.16±0.09Ma(MSWD=3.9,n=5)separately,whichbelongtothemiddleMioceneinage;namely,theyareproductsoftheGangdesepost-collisionextensionalstagewhencrust-mantlematerialsmeltedandmixedaswellasmagmaticintrusionsimultaneouslyoccurred.Somezirconswithagesof203.6±2.2Ma(MSWD=1.18,n=7)werecapturedintheore-bearingdioriteporphyrite,whichshowsthattherehadbeentectono-magmaticeventsinthelateTriassic-earlyJurassic.Molybdenum(copper)ore-bodiesproducedinthemonzograniteporphyryandcopper(molybdenum)ore-bodiesproducedinthedioriteporphyritearethemainoretypesinthisoredeposit.ThemodelagesofRe-Osisotopicdatingforthe11molybdeniteare13.97-15.84Ma,whileisochronagesare14.09±0.49Ma(MSWD=26).Theisochronagesofsevenmolybdenitefrommolybdenum(copper)orewithmonzograniteporphyrytypeare14.11±0.31Ma(MSWD=5.2).Thereisgreaterrorintheisochronagesoffourmolybdenitefromcopper(molybdenum)orewithdioriteporphyritetype,andtheirweightedaveragemodelagesof14.6±1.2Ma(MSWD=41),whichgenerallyrepresentthemineralizationage.TheresultsabouttheR

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简介：PalmSource公司于去年年底宣布向许可商提供PalmOSCobalt,PalmOSCobalt就是大家所谈论的PalmOS6操作系统。那么PalmOS6到底有什么新的特性？到底是何方神圣？能不能在争夺日益激烈的掌上设备操作系统中取得优势？在大家对PalmOSCobalt盼望、猜测和充满疑问的时候，《数码·移动通讯》整理了一些读者们最感觉兴趣问题，通过越洋电话对PalmSource公司PalmOSCobalt产品经理JohnCook先生进行了独家专访，以下就是此次越洋电话专访的内容。

简介：死锁问题是多用户操作系统的一个重要事件，是进程运行过程中对资源请求在时间上的冲突．通过对操作系统的瞬间状态研究，就可以避免死锁的发生。

简介：2016年Q4亚马逊Alexa以88%的市场份额主宰全球智能家居音箱市场StrategyAnalytics发布的最新季度报告《智能家居音箱厂商以及OS市场份额》指出了亚马逊在该迅速发展的市场中的先期优势。2016年Q4,全球市场智能家居音箱销量超过400万台;谷歌在11月发布'Home'音箱后,谷歌助手达到了10%的市场份额。

简介：摘要本文运用嵌入式技术，基于uC/OS-Ⅲ操作系统，通过实验和仿真设计的智能电网电能信息采集器，为不同台区、环境和密集度的用户搭配适合其自身特点的电能信息采集器提供研制模板和理论指导。同时，在不同类型的用户选择通信方式上有着一定的参考价值。

简介：Somefactorssuchascontinuouspricefallingofrareearthconcentrates,increaseinproductioncostandincreasinginvestmentinsafetyandenvironmentalprotectionpreventedthedevelopmentofminingindustry.Tosafeguardtheinterestsofminingcompaniesandfacilitatethehealthydevelopmentofrareearthindustry,REMiningSocietyofMianningCountyheldageneralmeetingrecently.FollowingresolutionswerepassedonJuly13th:1.SinceJuly14th2005,thelowestprotectivemarketpricesofrareear...

简介：你也许会问：kid不是“小孩”的意思吗？没错，不过在这里kid是动词，意思是“哄骗，嘲弄”。

简介：WiththeadministrationofNationalLandResourceMinistrytowardrareearthores,REOfficeofStateCounciltowardrareearthenterprises,andenforcementofenvironmentcontrolmeasures,newoutlookappearsinChineserareearthindustry,featuredbyholisticpriceclimbingofrareearthproducts.Somesmallandwithlargepollutionenterprisescloseddown.Morebigonesstoppedproductionduetoshortsupplyofconcentrates.Butthisisagoodphenomenontothoselargeproducers.Years'stockpilesweresoldout...

简介：大脚先生要举办一场舞会．他发出了很多邀请函，请你在下面这些邀请函上的姓名前填上填上正确的称呼，并用线把邀请函与对应的怪物连起来

简介：Britholite-（Y）（abukumalite）,arare-earthmineralfirstdiscoveredinJapanandSovietUnionin1963,wasrecentlydiscoveredinHenanProvince,China,bySongChunliu,QiaoBingkunandZhangJianhong.Itisasilicatemineralofa-patite-structure.Itschemicalformulais（Y,Ca,Dy）（SiO4）3（OH,F）.Itcontainsabout44%YRO3andnearly5%Dy2O3.Themineraloccursingraniteinassociationwithgadolinite,fergusonite,samarskite,

简介：FuJishuandYeYajunofZhejiangTex-tileEngineeringSchoolofChinarepor-tedthatasmallamountofRE-chlorides（0.3%）addedtothedyeingbathforpuresilkgivesprominentresultsasverifiedbylaboratoryworkandproductiontrialsandCeCl3isaseffectiveasmixedRE-chloridesofthelightsub-group.TheuseofREinsilkdyeingbathsre-suitsin:shorteningtimefordyeing,de-

简介：TheSeventhNationalSymposiumonREAnal-ysis,sponsoredbytheChineseSocietyofRareEarths,washeldinDayongCityofHunanProvinceSept.22-26,1992.Morethan80expertsattendedthesymposiumwith70paperspublished.Prof.JiangZuchenandZhangHuashan,bothfromWuhanUniversitywereinvitedtolecturethemeetingon“TheSituationandProbleminICP