简介：常规时间成像技术不能够生产精确地震成像在Tarim盆的山前面表面下，中国。他们的想象的结构导致了以前钻失败的某专业，忍受他们的结构的闭合有的坏名声车轮和他们的结构的高度有弹簧。这篇文章首先列出成像挑战，并且解释在一图解时间成像技术为什么在这个区域失败。然后通过一系列真实数据例子，当时，它表明那在那里存在侧面的速度变化，深度成像是唯一的答案在这个区域处理成像挑战。为wavefield的复杂性的深度成像报道，因此生产优异、地质的嘴巧的图象。在适当地执行深度成像的核心任务是造速度模型。这篇文章强调一些主要方面在这方面。

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简介：TheMayangCudeposit,westernHunanisamiddle-scalesandstone-typeCudepositpredominantofnativecopper.Fromanangleofgeologicalintegrativefield,fracturegeochemicalfeaturesarestudidedanddiscussedinthispaper.Infracturestructure,variantregularityandtheratiosofelementcouplesparticipatinginmetallogensisthattheirgeochemicalnaturesaresimilarorstronglycorrelative,revealchanginglawsofmetallogenictemperatureandpressurefieldsandmigratingdirectionofmetallogenicelements.Thetheoreticalstudytalliesmuchbetterwithproductivepractice.Theyaremeaningfultoconductprospectingandexployation.

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简介：TheKuandianComplexisscarcelypreservedEarlyProterozoicvolcanicsuite,formed2.3-2.4Gaago.ItislocatedinanEarlyProterozoicmobilebeltboundedbytheArchaeanRangrimandRyonggangBlocksofthenortheasternSino-KoreanCraton.TheComplexismainlymadeupofamphibolites,gneisses,leucoleptite,leptiteandlayeredgranite.PetrologicalandgeochemicalstudiesshowthattheprotolithsoftheComplexaremainlyassoctationsofbimodalvolcanicsandanorogenicgranites.TheKuandianamphibolitesaredepletedinNb,Ta,PandTi,andenrichedinLILE,e.g.K,RbandCs,withpronounceddepletionofSrrelativetoNdandPb;La/Nbratiosarehigherthan1（1.75to5.18）.ThetraceelementpatternsoftheamphibolitesaresimilartocontinentalfloodbasaltsformedbytheGondwanabreak-up,suchasthoseinSouthKarooandTasmania,whichshowscontinentalcontamination.εNdvaluesrangingfrom0.70to1.94oftheKuandianamphibolitesandtherelationshipsbetweenNb/YbandLa/Ybsuggestthatcontaminationofbasalticmagmahappenedinthemantle,ratherthanalongtheconduit.Isotoperatiosof208Pb/204Pb,207Pb/204Pb,206Pb/204Pb,143Nd/144Ndand87Sr/86SrindicatethatthemagmawasderivedfromacontaminatedmantlesourcelikeDMMoramixtureofDMMandEM2.TheKuandianComplexhasDupalanomaly,asisthecasewithsomecontinentalbasaltsinthesouthhemisphere,e.g.inSouthKarooandTasmania.PetrochemicalmodellingproposesthattheKuandiangneiss,granite,andamphibolitecamefromthesameparentalmagma,beingproductsofstrongfractionalcrystallization.ProtolithsoftheKuandianComplexwereformedinextensionaltectonicsettingduringthetransitionfromcontinentalcrusttooceaniccrust.TheformationoftheKuandianComplexindicatesthat2.3or2.4GaagotectonicevolutionoftheSino-Koreancratonwasdifferentfromthatofotherwell-studiedPrecambriancratons,e

简介：Neoarchean变形mafic岩石在更低并且中间的WutaiComplexmainly包括变形斑粝岩，角闪岩和绿泥片岩。他们能根据球粒状陨石被细分进三个组规范的REE模式。在组#1的岩石被将近扁平的REE模式(La_n/Yb_n=0.86-1.3)描绘，最低全部的REE(29-52ppm)，并且弱对积极Eu异例否定(Eu_n/Eu_n~*=0.84-1.02)，将近完全原始的披风使模式和强壮的否定Zr(Hf)正常化异例。他们在REE和痕量元素的geochemical特征类似于海洋高原拉斑玄武岩的那些，它暗示这组岩石能表示太古代的海洋的外壳的残余源于一根披风羽毛。在组#2的岩石被中等全部的REE(34-116ppm)描绘，充实LREE(La_n/b_n=1.76-4.34)球粒状陨石与弱Eu异例使REEpatterns正常化(Eu_n/Eu_n~*=0.76-1.16)，并且否定Nb，Ta，Zr(Hf)，在使正常化的原始披风的Ti异例搜寻图。REE和痕量元素特征显示他们表示从一个亚弧披风发源的弧岩浆挤metasomatized导出byslab的液体。在组#3的岩石被最高全部的REE(61-192ppm)描绘，有稍微否定的Eu异例的最强壮的LREE丰富(La_n/Yb_n=7.12-16)(Eu_n/Eu_n~*=0.81-0.95)在球粒状陨石规范的图。在原语，披风使图正常化，这些岩石被大负异常在Nb描绘，Ta，Ti，对没有Zranomalies否定。他们代表从充实的亚弧披风楔发源的弧岩浆导出inslab融化。三组岩石暗示NeoarcheanWutaiComplex的形成与披风羽毛和岛弧相互作用有关。

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简介：ThePayangazucomplexinthecentralMyanmariscomposedmainlyofquartzdiorite,granodiorite,andsomesynplutonicmaficdikes.ThequartzdioriteandgranodioritehavezirconU-Pbagesof130.5±4.0(MSWD=3.5)and118.4±2.5Ma(MSWD=2.4),respectively.Rocksamplesofthequartzdioriteandgranodioritearemetaluminous,enrichedinlarge-ionlithophileelementslikeLREE,Rb,Th,andU,anddepletedinhighfield-strengthelementssuchasHREE,Nb,Ta,P,andTi,indicativeofarc-typemagmaticaffinities.WholerocksamplesofthequartzdioritehaveεHf(t)valueof+0.6,initial^87Sr/^86Srratiosof0.7086to0.7100,andεNd(t)valuesof-4.8to-4.9;whereasrocksofthegranodioritearerelativelyisotopicallyenriched,withεHf(t)valuesof-5.1to-7.2,initial^87Sr/^86Srratiosof0.7117to0.7118,andεNd(t)valuesof-8.7to-8.8.TheisotopicdatatogetherwiththehighMg#(boththequartzdioriteandgranodioritehaveMg#valuesof>40)suggestastronginvolvementofmantlematerialsinthegenesisoftheparentmagmas.Thepossiblepetrogeneticprocessmaybethattheascendingofmeltsfrompartialmeltingofmetasomatizedmantlewedgetriggeredbydehydrationofsubductedslabresultedinpartialmeltingofthelowercrustandmixedwiththelatter.TheseEarlyCretaceousintrusionsfromthecomplexareolderthanthosefoundintheeasternWuntho-PopaarcinwesternMyanmar,easternHimalaya,andwesternYunnanwhichareinterpretedtoberelatedtotheNeo-Tethyansubduction,andhaveεNd(t),εHf(t)valueslowerthanthelatter.Onthecontrary,theagesandgeochemicalcharacteristicsofthePayangazucomplexareconsistentwithsomeoftheintrusionsinthenorthernmagmaticbeltinTibet,easternHimalaya,andwesternYunnanwhicharebelievedtobeassociatedwiththesubductionoftheBangong-NujiangOceancrust.Thus,weproposethattheEarlyCretaceousintrusionsinthecentralMyanmararemostlikelyrelatedtothesouthwardsubductionofanoceanslabthatwaspossiblyanextensionoftheBangong-NujiangOcean.

简介：ActaGeologicaSinica(EnglishEdition)isindexedbySCI,withtheimpactfactorsrangingfrom1.5to2.15,andalsoindexedbyCA,theBibliographyandIndexofGeology(BIG),BiologicalAbstracts,andGeographicalAbstractsandmanyothers.Internationally,ActaGeologicaSinica(EnglishEdition)hasbeencooperatedwithWilley-BlackwellPublishingCorporation,andhasallthepaperspublishedonline.ActaGeologicaSinica(EnglishEdition)hastwosubmissionwebsitesat:http://mc.manuscriptcentral.com/agsforinternationalauthorsandhttp://www.geojournals.cn/dzxben/ch/index.aspxforChineseauthors.Authorscansubmit,inquireanddownloadpapersateitherwebsite.

简介：ActaGeologicaSinica(EnglishEdition)isindexedbySCI,withtheimpactfactorsrangingfrom1.5to2.15,andalsoindexedbyCA,theBibliographyandIndexofGeology(BIG),BiologicalAbstracts,andGeographicalAbstractsandmanyothers.Internationally,ActaGeologicaSinica(EnglishEdition)hasbeencooperatedwithWilley-Blackwell

简介：南部的Junggar盆(西北中国)的中央区域是在这含石油的盆的一个关键探索目标。因为有四，潜力的集合采购岩石(例如，二叠，侏罗记，白垩纪和Paleogene定序)，石油移植和累积是多半复杂的。这研究代表一次尝试理解这复杂性以便为未来提供基本信息地区性的石油探索和地质的研究。基于石油地质学和地球化学，主要有烃的三种类型，这被暗示，包括采购白垩纪、采购Paleogene的油(与是主导的前者)并且采购侏罗记的气体。石油迁居和累积主要盖住三个阶段。第一个阶段是早更新世，采购白垩纪的油在移居并且积累的迟了的时期。然后，在第二个阶段(从到迟了的更新世的早时期的中间的更新世的迟了的时期)，和采购Paleogene的油，采购白垩纪的油参予迁居和累积。最后，最后迟了的更新世，油再迁移的大数量并且积累，与沿着差错移居积累的气体(特别采购侏罗记的气体)。因此，在区域的石油费用事件是复杂的，反映石油移植和累积上的复杂构造进化的控制。

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简介：Miaowan()ophiolite是在Yangtzecraton的北边缘附近外面收割的高度割下的ophiolitic建筑群。这建筑群的岩石由组成，从底部到顶，局部地包含podiform铬铁矿的harzburgitetectonite，纯橄榄岩，分层、各向同性的斑粝岩，sheeted堤建筑群(SDC)，有燧石豆荚和层的元枕头熔岩，和构造地设置的大理石。SDC向下是Miaowanophiolitic顺序，和等级的很重要、重要的部分进斑粝岩和ultramafic岩石，并且进元枕头熔岩向上。一些堤保存单程的chilled边缘，典型地代表extensionalophiolitic背景而大多数保存两倍chilled边缘，在寒心的方向能的情况中决定了。SDC主要由元辉绿岩(粗玄岩)组成，元斑粝岩和ultramafic的meta-plagiogranite，和小数量摇。LA-ICP-MS锆石标明日期收益一上面拦截年龄1026?????????????????????慩睯湡??灯楨汯瑩??丠潥牰瑯牥穯楯??慵杮楬杮？

简介：ThereisabeltofmetamorphiccorecomplexesinthewesternmarginoftheYangtzecraton.ThegeologicalsettingofthebeltissimilartothatoftheCordilleranmetamorphiccorecomplexes.AtypicaloneinthisbeltistheJianglangmetamorphiccorecomplex,whichhasaconfigurationconsistingofthreelayers:acorecomplexconsistingofMesoproterozoicschistsequence,aductilemiddleslabconsistingofPaleozoicmeta-sedimentary-basaltcharacterizedbythedevelopmentof"foldinglayer"andanuppercoverconsistingofXikangGroupwhichhassufferedbothbucklingandflattening.AdetachmentfaultdevelopedalongthecontactboundarybetweenthecoverandbasementcausestheomissionofUpperSinianandCambrianatthebaseofcover.Alotofnormalductileshearzonesdevelopedinthecovercausesthethinningofit.Allthefeaturesshowthattheearlyextensionresultsinthethinningofcrust,buttheformationofthedomeandexposureofbasementrocksmaybetheresultsofsuperimp

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简介：SHRIMPU/Pb-zircondataandNdmeancrustalresidenceagesindicatethatthelmatacaComplexdevelopedfromanArchean(≥3.2Ga)continentalprotolithwhichhasundergoneconsiderableisotopicdisturbanceplusandjuvenileaccretionduringlate-Archean(-2.8Ga)times.Transamazoniangranulitesexperiencedpeakmetamorphicconditionsof750-800℃,6-8kbarwithassociatedtranspressivethrustingandtectonicimbrication.Geochronologyonzircon,pyroxeneandgarnetconstrainsthetimingofpeakmetamorphismat1.98-2.05Ga.DiffusionmodelingofFe-Mgexchangebetweenbiotiteinclusionsandhostgarnetyields(nearmetamorphicpeak)coolingratesof50-100℃/Ma,withpetrologicalcoolingratesbeinggenerallyconsistentwithcoolingratesdeterminedfromgeochronology.CombiningtheretrogradeP-Tpathwithcoolingratessuggeststhatafterthemetamorphicpeak,largeportionsofthelmatacaComplexwereexhumedfrom30to17kmatarateof7-2km/Ma.Afterthis,exhumationratesprogressivelydecreasedastherocksapproachedthesurface.Rapidoverallupliftlerosionhadceasedwhentherockspassedbelow600-550℃at2.01-1.96Gaago.Observedvariationsinmineralcoolingagesareinterpretedastoreflectepisodicdifferentialtectonicexhumationwithinmajorfaultsystems.Inferred(maximum)agesoffaultre-activationgenerallycoincidewithmajorcontinentalaccretioneventsintheAmazonianCratonandreflectlong-termthermalevolutionofthelmatacaterrane,asconditionedbyvariableresponsetocontinuedcontinentalconvergenceduringtheProterozoic.

简介：ＣａｌｃａｒｅｏｕｓＡｌｇａｅｆｒｏｍＮｏｒｔｈｅａｓｔｅｒｎＢｒｉｌｏｎＲｅｅｆＣｏｍｐｌｅｘｏｆＭｉｄｄｌｅａｎｄＵｐｐｅｒＤｅｖｏｎｉａｎｉｎＥａｓｔｅｒｎＳａｕｅｒｌａｎｄ，Ｇｅｒｍａｎｙ￥ＨｏｎｇＴｉａｎｑｉｕ（ＤｅｐａｒｔｍｅｎｔｏｆＲｅ...

简介：在从theZhongtiao山的南部的Sushui建筑群的Paleoproterozoic钾的granitoids产出1968-1944妈的虾锆石U-Pb年龄。Lithologically，potassicgranitoid系列由monzodiorite，石英二长岩和syenogranite主要组成。他们的痕量元素和Sm-Nd同位素特征显示他们从太古代的TTG岩石的部分融化在被导出一过去变厚的大陆地壳。这钾的granitoidseries的岩石成因论在thePaleoproterozoic在Trans北方中国造山带以内暗示collisional环境，它支持东方、西方的大陆块在Paleoproterozoic正在被混合的一个构造模型。

简介：Yunmeng掸人变形核心建筑群(MCC)由更低的板，上面的板和分开地区组成。分开地区由组成可锻砍地区(糜棱岩地区)，chloritizedmicrobreccias地区和易碎的差错飞机。可锻砍地区包含mylonitic岩石，protomylonites，和糜棱岩。从用Rf/方法的那些岩石的长石porphyroclasts的有限紧张大小证明紧张紧张从mylonitic岩石(Es=0.660.72)增加到protomylonites(Es=0.660.83)，并且到糜棱岩(Es=0.711.2)。紧张类型接近变平紧张。运动学的涡度由极的Mohr图估计了建议糜棱岩的生叶和线条(0.47