简介：Itisawellknownfactthatmagnaticcryoto-explosion,asaspeeialformofmagmatismunderthenear-surfacecondition,hasacloseconncctionwithcdogcnicmctaldcposits,particularlywiththoseofporphyrytyPe,suchaSporphyryCu-Mo,Pb-Zn,W-SnandUdcposits’However,onlyinrcccntyearsbavetheChineseoregeologistsandpetrologistsgivenin

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简介：ThegeologicalfeaturesoftheLongshanAu-Sbdepositsaresystematicallydescribed.Mineralizationconditions,sourcesoforematerialsandmetallogeneticmechanismarealsoanalysedaccordingtosulfur,oxygenisotopecomposition,pyritetypomorphicfeaturesandfluidinclusionthermometrydating,Theresultsshowthatitisasedimentarymetamophichydrothermaldeposit.

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简介：ＭｅｔａｌｌｏｇｅｎｉｃＤｙｎａｍｉｃｓｏｆＺｈａｓｈｕｉＡｇ－ＰｂＰｏｌｙｍｅｔａｌｌｉｃＯｒｅＤｅｐｏｓｉｔｉｎＳｈａａｎｘｉ，ＣｈｉｎａＷｅｉＪｕｎｈａｏ；ＬｉＪｉａｎｗｅｉ；ＷａｎｇＳｉｙｕａｎ（ＦａｃｕｌｔｙｏｆＥａｒｔｈＲｅｓｏｕｒｃｅｓ...

简介：1.IntroductionInrecentyears,theproblemaboutthetectonic-meta1logcncsjshasbeennotieedbymanygeolo-gists’Aboutmoretbantcnyearsago,ProfessorCbcnGuodaproposcdtbcconeeptionoftectonic-met-allogenesis’AndProfessotHuangRuihua(1989,1990)paidgrcatattcntiontotheinitiativeofstructurcsactingonthemctallogencticproe

简介：Yinshananticlineistheproductoftectono-dynamicdeformation-metamorphism.Alongtheaxisoftheanticlineexistsabrittle-ductileshearingzonewhichobviouslycontrolstheore-formation.Mineralizationoccursalongtheaxisoftheanticlineinawidthofabout1000m.Intheminingarea,volca-no-subvolcanicrocksofEarlyYanshanperiodaredividedintothreecycles:Iintermediateacidicdacitelavaanddaciteporphyry;Ⅱacidicamphibolelipariteandquartzporphyry;Ⅲintermediateandesiteporphyrite.AmongthemactivitiesofⅠandⅡcyclesaremoreintensiveandareintimatelyrelatedtothemineralization.Yinshanoredepositistheresultofcombinativeprocessesoftectono-dynamicandvolcano—magmatichydrothermalfluids,sothattherearetwocentersofmetallogeniczoning,onebeingtheaxialstrainzoneofYinshananticlinewhichisthecenteroffirstorder,andtheotherbeingporphyrystock,2ndorder.

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：<正>PRELIMINARYSTUDYONTHEORE-FORMINGCONDITIONSOFTHEAu-Pb-QUARTZVEINTYPEOREDEPOSIT,CHINAHeZhili,XuJiuhua,YangZhenlinandDuJafeng(Dept.ofGeol.,Univ.ofScie.andTech.Beijing,100083Beijing,China)Ore-formingcondition,Au-Pb-quartzvein,oredeposit,ChinaTherearefewAu-Pb-QuartzveintypeoredepositsinothercountriesexceptChina.Itmightberelatedtothegeohistoryandgeotectonicbackground.However,thiskindoforedeposithasanimportanteconomicalsignificanceinChina.Itsformationisduetothedis-tinctivegeologicalconditionsofchina.WendongAu-Pb-QuartztypeoredepositincludingWenyuandDongchuanginXiaoqinlinggoldfieldisthemosttypical.Itisapolygeneticandcompoundoredeposit,JintongchaandotherdepositslyingtothewestofitinXiaoqinlingareaareAu-Pb-Quartzveintypeoredeposits.OthersofthisarealyingtotheeastofJintongchaareAu-Quartzveintype.Thisphenomenonstemsfromthezonnaldistributionofminernalde-positsa

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：LakesinTibetPlateauwithlittleeffectsofhumanactivitiesserveasimportantindicatorsofclimatechange.ThisstudyanalysedremotesensingdataandlongtermclimatevariablestoexaminethehydrologicalresponseoflakesinNamCoBasin.TheareachangesoflakeswereextractedbyLandsatTM/ETM+andanalysedbySRTM3DEM.AndtheICESatelevationdatabetween2003and2009wereusedtoobservethelakeleveloftheNamCoLake.Theresultsshowthatthenumberofnewformedglacierlakesincreasedby36%andtheareaofglacierlakesincreasedby36.7%(0.97km~2)from1991to2011.Atthesametime,thesurfaceareaoftheNamCoLakeexpandedby3.71%(72.64km~2)oftheoriginalsizein1991,withatendencyvalueof3.63km~2peryear.ThelakeleveloftheNamCoLakeshowsanincreasetendencyof0.24mperyearduring2003–2009.Thesevariationsappeartoberelatedtoanincreaseinmeanannualtemperatureof0.06oCperyear,andanincreaseinannualprecipitationof2.1mmperyearinsummerinthelasttwodecades.Theincreasednumberoflakesandincreasedareaofglaciallakesreachedapeakatanaltitudeof5500–5600ma.s.l..Thenumberofnewformedglacierlakesandtheareaofglacierlakestendtohigheraltitudes.ClimatechangehasanimportantimpactonthevariationoftheglacierlakesandtheNamCoLake.

简介：TheTruongSonFoldBelt,locatedatthenortheasternmarginoftheIndochinaBlock,isconsideredtobetectonicallylinkedtothesubductionofthePaleotethysOceanandsubsequentcollision.SeponisoneofthemostimportantsuperlargedepositsoftheTruongSonFoldBelt.OurLA-ICP-MSzirconU-PbdatingresultsshowthatgranodioriteporphyrysamplesfromtheSepondeposithaveagesof302.1-4-2.9Ma,whichisacrucialphaseformagmatic-tectonicalactivitiesfromtheLateCarboniferoustoEarlyPermianandhasavitalinfluenceonthemineralizationofcopperandgold.ZirconfromgranodioriteporphyryyieldsεHf(t)valuesof4.32to9.64,andTDM2hasanaverageageof914Ma,suggestingthatthesourceofthegranodioriteporphyryintheregionweremainlymantlecomponentsbutunderwentmixingandcontaminationofcrustmaterials.TheCe^4+/Ce^3+valueofzirconinthegranodioriteporphyryvarysgreatlyfrom2.4to1438.29,whichshowsmagmamixingmightoccur.Consideringthecharacteristicsoftraceelementsinthezirconandthewholerockgeochemicalcharacteristicsofintrusionrocksaswellasthecharacteristicsofregionalvolcanic-sedimentaryassociation,itisindicatedthatthetectonicsettingmaybethecontinentalarcenvironment.TheSeponAu-Cudepositisderivedfromemplacementofcalc-alkalineintermediate-acidmagmawithcomingfromdeepsourcesinthesubductionprocessofthePaleotethysOcean,formingporphyryMo-Cu,skamCu-Aumineralizationandahydrothermalsedimentary-hostedAumineralizationinthewallrocks.

简介：采用GM70手持式二氧化碳测试仪等测量仪器,对兴文石海洞乡天泉洞内CO2浓度进行测量。根据对天泉洞2008年7、8月CO2浓度的实测数据资料,从高程、洞道横断面大小、洞道深度、游客等影响因素对CO2浓度分布的影响进行分析,给出了洞内CO2的分布特征。研究发现:高程对CO2浓度影响较小;洞道越深、洞断面越小,CO2浓度越大;游客对溶洞内CO2浓度贡献很大;目前洞内CO2浓度还不足以威胁到游客的身体健康。得出的结论和实测数据为保护游客身体健康和洞穴旅游开发管理提供了科学依据。

简介：Thermalmaturationandpetroleumgenerationmodelingofshalesisessentialforsuccessfulexplorationandexploitationofconventionalandunconventionaloilandgasplays.Forbasinwideunconventionalresourceplayssuchmodeling,whenwellcalibratedwithdirectmaturitymeasurementsfromwells,cancharacterizeandlocateproductionsweetspotsforoil,wetgasanddrygas.Thetransformationofkerogentopetroleumisassociatedwithmanychemicalreactions,butmodelstypicallyfocusonfirst-orderreactionswithratesdeterminedbytheArrheniusEquation.AmisconceptionhasbeenperpetuatedformanyyearsthataccuratethermalmaturitymodelingofvitrinitereflectanceusingtheArrheniusEquationandasingleactivationenergy,toderiveatime-temperatureindex(∑TTIARR),asproposedbyWood(1988),isflawed.ThisclaimwasinitiallymadebySweeneyandBurnham(1990)inpromotingtheir'EasyRo'method,andrepeatedbyothers.Thispaperdemonstratesthroughdetailedmulti-dimensionalburialandthermalmodelinganddirectcomparisonofthe∑TTIARRand'EasyRo'methodsthatthisisnotthecase.The∑TTIARRmethodnotonlyprovidesaveryusefulandsensitivematurityindex,itcanreproducethecalculatedvitrinitereflectancevaluesderivedfrommodelsbasedonmultipleactivationenergies(e.g.,'EasyRo').Throughsimpleexpressionsthe∑TTIARRmethodcanalsoprovideoilandgastransformationfactorsthatcanbeflexiblyscaledandcalibratedtomatchtheoil,wetgasanddrygasgenerationwindows.Thisisachievedinamore-computationally-efficient,flexibleandtransparentwaybythe∑TTIARRmethodthanthe'EasyRo'method.Analysisindicatesthatthe'EasyRo'method,usingtwentyactivationenergiesandaconstantfrequencyfactor,generatesreactionratesandtransformationfactorsthatdonotrealisticallymodelobservedkerogenbehaviourandtransformationfactorsovergeologictimescales.

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简介：最新发现的Zhunuo斑岩Cu-Mo-Au存款在南部的西藏位于Gangdese斑岩铜带的西方的部分，SW中国。在Zhunuo区域的granitoidplutons由石英闪长岩斑岩，闪长岩斑岩，granodiorite斑岩，黑云母monzogranite和石英斑岩组成。石英闪长岩斑岩产出51.9愠摮戠潩敭楤慣?灡汰捩瑡潩獮戠'坍剶茶?湥'L敬?敲潣湧瑩潩?景愠瑣癩?湡?湩捡楴敶猠敷瑡瀠牯獥漠?畣癲摥猠楫??晲捡獥眠敨敲爠杩摩漠?慰数?祴数猠敷瑡瀠牯?敳獮牯?的锆石U-Pb年龄牡?湩晥敦瑣癩e

简介：Accordingtotheplancofthcproject,studyonthcptogressivecvolution,geothermalcnergycoaccrvation-diffusionandcrust-mantlemetallogenesisinthemiddlepartofEastAsiancrustobodysupportedbyNNPC,andInvitedbyAcadcmiamemberprof.ChenGuoda,theMongolianScicntist,MongolianTcchinica1Univcrsityprof.o.GerclandtheRussianS

简介：CO2富有的冷弹簧在Wudalianchi发生在活跃火山附近()，东北中国。弹簧富于CO2，与HCO3吗？作为占优势的阴离子并且提高了全部的溶解固体(TDS)的内容(>1000mg/L)，Fe2+(>20mg/L)，Sr(>1mg/L)，并且溶解Si(>20mg/L)。弹簧的逃离并且溶解的气体的作文是类似的。在在Wudalianchi的矿泉的逃离的气体和溶解气体的13C价值变化从?8.77到?4.53并且?8.24到?5.26当18O价值变化从时?10.68到?7.65并且?10.30到?8.84，分别地在弹簧显示逃离的气体和溶解气体的CO2的一样的上面的披风起源。碳和氧同位素分别和water-CO2交换在地下水流动的过程是弱的。4He内容超过5000