简介：Theso-called“Yangtze-type”copperdepositsinclude:（1）Cu-bearingmassivepyritebed,(2)Cu-bearingskarnandmagnetite-typeoredeposits,withreplacementCu-vein-typedepositsnearthemetasomaticzone,and(3)mineralizedintrusivebodiesandbrecciapipes,someofwhichareknownasporphyrycopperores(e.g.Chengmenshan).ThistypeoforedepositsisatypicalexampletoverifythepolygenesisofinostofthedepositsinChina,ashasbeenpromotedbyProf.TuGuangchiinviewofthepolycyclicdevelopmentofthegeologicalhistoryinChina.Thispaperiscon-cemedwithonesub-typeofsuchdeposits.

简介：Thesediment-hosteddisseminatedgolddepositsintheOinlingregionareofsedimentation-slight-metamorphicoriginsuperimposedbyhydrothermalreworkingatmoderate-lowtemperaturesandarewellcomparablewiththetypicalCarlingolddepositsintheUnitedStates.Inviewoftheconfusingconceptconcerningthe“sediment-hosted”and“Carlin-type”golddeposits,theauthorsproposethattheterm“sediment-hostedgolddeposit”shouldbeusedinabroadsensewhichencompassesatleastthefoursubtypes,i.e.,theCarlintype,themetamorphicfineclastictype,thehydrothermalsedimentarytypeandtheveintype.Inoterwords,the“Carlin-type”shouldnotbeusedasasynonymfor“sediment-hosted”butisrecommendedasasubtypeunderthegeneralcategoryof“sediment-hostedgolddeposits”

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简介：Thesuperlargecontinentalvolcanicrock-typeuraniumdeposits,whichwerediscoveredabroadlongago,havenotyebeenreporteduptonowinChina.Thisisanimportantproblemthatneedstobeurgentlysolvedbyuraniumgeologistsatpresent.Inthispaper,onthebasisofanalyzingthemetallogenicsettingsandgeologicalconditionsofthesuperlargecontinentalvolcanicrock-typeuraniumdepositsdiscoveredintheworldalongwiththemetallogeniccharacteristicsofthoseofthesametypeinChina,thespace-timedistributionpatternsofcontinentalvolcanicsandthemetallogenicpotentialofmaintectono-volcanicbeltsinChinaarediscussed,andasyntheticconclusionhasbeendrawnthatthereisapossibilitytodiscoverthesuperlargecontinentalvolcanicrock-typeuraniumdepositsinChina.Moreover,itisevidencedthattheGanhang,Nanling,Yanliao,DaHingganLingandothertectono-volcanicbeltspossessfavorablegeologicalconditionsfortheformationofssuperlargeoredepositsofthecontinentalvolcanicrocktype.Theintersectingandoverlappinglocationsoftheaforementionedmainbeltswithothertectono-volcanic(-intrusive)beltsarethemostpotentialareaswherethesuperlargecontinentalvolcanicrock-typeuraniumdepositswouldbefound.

简介：EarlyOrdovicianA-typegranitesinthenortheastern(NE)SongnenBlockNEChinawerestudiedtobetterunderstandthegeodynamicsettingsinthisregion.ThisresearchpresentsnewzirconU-PbagesandwholerockgeochemicaldatafortheEarlyOrdoviciangranitesintheNESongnenBlock.ZirconU-PbdatingindicatesthatthegraniteintheCuibei,Hongxing,andMeixiareasintheNESongnenBlockformedintheEarlyOrdovicianwithagesof471-479Ma.ThegranitesshowgeochemicalcharacteristicsofhighSiO2andK2OcompositionsandlowFeOT,MgO,CaO,andP2O5compositions.TheybelongtoahighKcalc-alkalineseriesanddisplayaweakperaluminousfeaturewithA/CNKvaluesof0.98-1.14.TherockshaveaΣREEcompositionof249.98-423.94ppm,andareenrichedinLREEwith(La/Yb)Nvaluesof2.87-9.87,anddisplayobviousEuanomalies(δEu=0.01-0.29).TraceelementsofthestudiedgranitesarecharacterizedbyenrichmentinRb,Th,U,Pb,Hf,andSm,anddepletionofBa,Nb,Ta,andSr.TheydisplaygeochemicalfeaturesofhighZr+Y+Nb+Cevalues(324-795ppm)andGa/AlratiosconsistentwithA-typegranites.Basedonparticulargeochemicalfeatures,suchashighRb/Nb(7.98-24.19)andY/Nb(1.07-3.43),thestudiedA-typegranitescanbefurtherclassifiedasanA2-typesubgroup.ThisresearchindicatesthattheEarlyOrdovicianA-typegraniteswereformedbythepartialmeltingofancientcrustinanextensionalsetting.LowerSr/Yand(Ho/Yb)Nratiosindicatethatplagioclaseandamphiboleareresidualinthesource,andgarnetisabsent,implyingthatthemagmawasgeneratedatlowlevelsofpressure.Bycontrast,thecontemporaneousgranitesintheSEXing'anBlocksuggestasubduction-relatedtectonicsetting,anditsadakiticpropertyindicatesathickenedcontinentalcrust.WesuggestthatthePaleo-AsianOceanplatebetweentheXing'anandSongnenblockssubductednorthwardduringtheEarlyOrdovician.Meanwhile,theNESongnenBlockwasexposedtoapassivecontinentalmargintectonicsetting.

简介：TheJinjiazhuanggolddepositoccursintheZhangjiakougoldfield,NorthwestHebei.TheorebodiesaremostlyhostedinXiaozhangjiakouultrabasicrocksdominatedbydiopsidite.Electronmicroprobeanalysesindicatethatthedepositischaracterizedbytheenrichmentofsomeplatinumgroupelementsinprincipalmetallicmineralssuchaschalcopyrite,galena,sphaleriteandpyrite,andthepresenceofmillerite,Stableisotopestudiesshowthatcarbon,sulfurandmostofthemetallogenicelementswereprobablyderivedlargelyfromthehostXiaozhangjiakouultrabasicrocksandthatitispossiblethattheore-formingfluidwaspredomintedbymeteoricwater.

简介：Huaniushan花岗石在Beishanorogenic带被定位，西北的中国。在在花岗石和云石之间的接触地区，热水的Pb-Zn和skarnAu存款被形成。标明日期的LA-ICP-MS锆石U-Pb产出229.5猠的加权的吝啬的206Pb/238U年龄吗？

简介：Calc-alkalinegranites(excludingA-andM-type)couldbedividedintotwopetrogenicseries,I,e,thesyntexisseriesandthetransformationseriesaccordingtotheirgeneticmechanisms.InthelightofthisclassificationwefoundthatgranitesofthesetwoseriesoftenaligneinpairedzonesparalleltocontemporaneousB-typeorintracontinentalcompression-subductionzoneswithinascendedslabs,re-sultinginaregularzonalpatterntogetherwithsubductionzones.Thus,theyaredefinedastwingranitebelts.Accordingtothespatialrelationsbetweenthegranitebeltsandthesubductionzones,thetwingranitebeltscouldbeclassifiedasA,ABandB-type.ThezonationofgranitesofthetwoseriesinthenorthernpartoftheEastQinlinareacouldbecitedasatypicalexampleofA-typetwingranitebeltsrelatedtotheYenshanianintracontinentacompression-subductionmovementinthearea.InthispaperthetectonicsettingsandpetrogenicfeaturesofthetwingranitesbeltsinEastQinlinaresystematicallydescribed,andatectonicmodelforgraniticmagmagenesisinintracontinentalcompression-subductionenvironmentshasbeenproposed.Inthismodeltheforma-tionofA-typetwingranitebeltsiscloselyconnectedwithtectonicmovementsintermsoftheprince-ple,ruleanddynamicsofmaterialdifferentiationinthelithosphere.

简介：InthispaperanintegratedgeologicalandgeochemicalcomparisonismadeofCarlin-typeandCarlin-like-typegolddepositsintheregionofSouthQinlingwiththeirassociatedhydro-thermalsedimentarylead-zincdeposits,theCarlin-typedepositsintheYunnan-Guizhou-Guan-gxigoldtriangle,China,theCarlingolddeposits,Carlin,westernUnitedStates,andtheMu-runtau-typegolddepositsinUzbekistan.Thecomparativestudyindicatesthattheformationofthesedepositshasanintimatecouplingrelationwiththemechanismofthetectonicmovementofmodernplates.Therefore,thesedepositsbelongtothosethatwereformedintheorogenicstage.Theyhavethefollowingsimilarcharacteristics:theyareallsediment-hosted,occurinatectonicenvironmentofextensionalriftingnatureandshowthecharacteristicsofsyngeneticallymodifiedmineralization.Ontheotherhand,theyalsohavenoticeabledifferences:theyaredifferentinrespecttotheirtectonicsettings,associationandstructureoforogenicbeltsandcomplexityandstrengthofthemodifiedmineralization.Theregionaltectonicevolutionandextensivemineraliza-tioninorogenicbeltsaredifferentexpressionsofthesamecontinentaldynamicprocess.

简介：喝水类型斑釉是在有患者的最大的数字的中国的最有害的地方性的疾病。尽管政策的实现有效地控制了这种地方性的疾病的传播改变水来源降低氟化物水平，因为，它的流行不能彻底地被停止地方性地，diseased区域能仍然损害的在这些的高氟化物的环境背景通过食物链的人的健康。因此，在喝的水类型斑釉上进行更深去的研究是必要的。为了调查高氟的符号的效果，在在他们的根附近的热春天类型斑釉疾病区域，本地水，水稻土，米饭，整个蔬菜和土壤的庄稼和人的健康上的环境背景为分析被取样。结果与在在自然背景并且在社会背景类似于斑釉疾病区域的没有斑釉的区域的控制组的那些相比。大米和蔬菜能在土壤或在灌溉水积累水溶性的氟的符号任何一个，这被显示，并且不同庄稼有修理氟的符号的不同能力。在在斑釉疾病和没有斑釉的区域的蔬菜的不同部分的氟的符号的内容统计上被分类。结果证明在斑釉疾病区域的蔬菜的根，澡盆ers，叶子和花的氟的符号内容分别地是3.56，1.17，3.07和3.23mg/kg。然而，比较证明在没有斑釉的区域，氟的符号内容分别地是2.17，0.70，1.91和2.52mg/kg。而且，庄稼的不同部分也显示出显著地不同的氟的符号固定能力。强烈新陈代谢的部分的氟的符号内容相对高，这被表明。例如，蔬菜的根，叶子和花的氟的符号内容比茎的那些高得多。种子的氟的符号固定能力是很弱的。以便把人的身体的暴露的风险归结为氟化物，到改正氟的符号的庄稼的能力上的温泉水的影响应该被减少像一样可能。阻止庄稼与温泉水被灌溉作为在被温泉水严重地影响的区域的主要可食的部分是很重要的，与相对低的能力种庄稼充实氟的符号是明智的，例如有种子或澡盆ers的那些。

简介：在Ninglang的Tongchanghe本国的铜辉铜矿存款在西方的云南的low-Tibasalts发生，并且充满差错的&交代作用metallogenesis的模式显示这存款具有迟了阶段的热水的起源。这使定义形成矿石的材料的来源更复杂。这篇论文介绍喜玛拉雅的alkali-richporphyries的Pb同位素数据，地区性早中间原生地变质岩地下室和在有一次尝试到的西方的云南的采矿区域的岩石的各种各样的类型在Ninglang抑制Tongchanghenative铜辉铜矿存款的起源。结果证明矿石在Pb同位素组成是相对同类的，暗示简单形成矿石的材料来源。在喜玛拉雅的充满碱的斑岩的Pb同位素的比率的三个集合都比矿石的那些高；地区性的地下室变质岩表演在Pb同位素的比率的大量变化，与矿石铅的同位素组成相当不同；三叠纪的沉积岩和泥石头和淤泥石头的Pb同位素组成内部在晚二叠的HeinishaoFormation的床(相应于向前玄武岩的爆发骑车)在采矿，区域有放射产生的铅的特征并且与矿石铅的同位素组成显著地不同；象矿石一样，在地区性散布的采矿区域和那些的Emeishan暗岩拥有一样的Pb同位素组成，显示出关于他们的分发范围的完全的重叠。从上面，可能性能被排除Tongchanghe存款的ore-formingmaterials从地下室被导出，许多喜玛拉雅的magmaticactivities，等等。形成矿石的材料主要从theEmeishan暗岩被导出，这从而被定义。从可得到的数据，发生在Emeishan暗岩分布式的区域的本国的cupper-chalcocite-typemetallogenesis让一样的金属采购著名计算机生产厂商，这被推出他Tongchanghe沉积物。

简介：第二届亚洲流体包裹体研究国际会议ACROFI-2（SecondMeetingoftheAsianCurrentResearchonFluidInclusion）于2008年11月12～14日在印度克勒格布尔（Kharagpur）举行，会议由印度工程学院主办。包括中国、俄罗斯、法国、瑞士、加拿大、澳大利亚、奥地利、伊朗和印度等9个国家的代表约80余人参加了会议。以中国矿物岩石地球化学学会矿物包裹体专业委员会倪培教授、沈昆教授、

简介：在岩石中的Pb~(2+)的吸附动力学用离子被学习了选择电极和原子吸收分光光度计。结果证明吸附过程是像分数维图形的反应。吸附率在30分钟前相对高，然后落下。Pb~(2+)和运动参数的浸透的吸附能力(a)(b，高山哈，D和k)与增加Pb~(2+)的起始的集中增加了。这些参数(除了一)当Na+在答案是在场的时，减少了。而且，岩石在粒子大小越小，这些运动参数将是越多bigger，不过参数一是几乎不变的。

简介：Shallowfreshwaterbodiesinpeatareascouldbeanimportantcontributortogreenhousegasesintheatmosphere.Inthisstudy,thepartialpressureofCO2inthesurfacewateroftheDianshanLakewasinvestigatedinsituinAugust2011.TheaveragepCO2inthestudyareawas2300μatmandfluctuatedwithintherangeof989–5000μatm.pCO2showedareversetrendtothevariationsofpHandDOinthesurfacewateroftheDianshanLake.ThewatertoairdiffusionfluxofCO2oftheupstream,middlelakeanddownstreamwererespectively63,33and14mmol/m2/d.Onaverage,thediffusionfluxofCO2ofthewholelakewas31mmol/m2/d.Consequently,ourresultsshowthatduringthesamplingseason,theDianshanLakeappearstobeagreatsourceofCO2.ItisalsodemonstratedthatrespirationcouldbethedominantbiochemicalreactionintheDianshanLakeinsummer.

简介：ExperimentshavebeenperformedonthesystemMgO-SiO2-Cr-Oat0-2.88GPaand1100-1450℃,focusingonthestabilityofCr^2+inolivine(O1),orthopyroxene(Opx)andspinel(Sp)anditspartitioningbetweenthesephases.Analyticalreagentgradechemicals,MgO,SiO2,Cr2O3.andCrwereusedtomakestartingmixtures.ExcessCr(50%)wasthenaddedinthesemixturestoensurethattheresultantphaseswereinequilibriumwiththemetalCr.FluxofBaO+B2O3(%)wasaddedforfacilitatingexperimentalequilibriumandcrystalgrowth.Crwasusedascapsulematerial.AllphasesintheproductwereidentifiedbyX-rayandanalyzedbyelectronmicroprobe,ThecontentsofCrOinthedifferentphases(O1,OpxandSp)werecalculatedaccordingtostoichiometry.TheobtainedresultsofcalculationindicatethatCr^3+inOlandOpxisnegligible.Theexperimentalresultsshow;(a)withincreasingtemperatureanddecreasingpressure,Cr^2+solubilityinOl,OpxandSpincreases;(b)withincreasingtemperature,thepartitioningcoefficientofMgandCr^2+betweenOlandOpxdecreases,thatbetweenOpxandSpincreases,andthatbetweenOlandSpremainsalmostunchanged;(c)theeffectofpressureonallpartitioningcoefficientsisnegligible.

简介：暗岩内部在CO_2在水库被发现在附近或在暗岩以内的地方，有油源岩的bedded在东方中国的裂缝盆经常被发现，例如在Dongying消沉的Binnan水库。在水库，有重碳同位素组成的CO_2(δ~(13)C>-10每千PDB)在为40%全部的煤气的保守的大多数箱子报道，并且被相信源于从披风玄武岩的岩浆排除。在他们Binnan水库的调查，作者建议CO_2将源于在源岩和暗岩之间的相互作用。因为在暗岩附近的源岩富于碳酸盐矿物质，暴烈的矿物质，转变金属和有机物，在他们的埋葬历史期间，一些转变金属在有机物的热降级上被催化进烃并且在碳酸盐矿物质的分解上进CO_2，它与转变金属(Ni和公司)在源岩的热模拟被复制。为在热模拟的进程产生的全部的煤气的储备的55%-85%的这种CO_2accounts，和它的δ~(13)C值每千从-11---7.2每千PDB，它很类似于在Binnan水库发现的CO_2的那些。CO_2和烃气体的合作产生使它可能他们的累积一起在一个陷井。换句话说，如果CO_2直接源于玄武岩的岩浆排除或从披风被导出，因为它进入了比烃产生早得多、比陷井形成早得多的盆，它不能与烃气体被积累。因此，在暗岩附近的源岩通过公司和Ni转变金属的催化作用同时产生了烃andCO_2，它在在东方中国的裂缝盆为烃气体和CO_2的合作累积的解释是有用的。

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