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简介：Steptoean积极的碳同位素旅行(香料)的全球出现在期间晚寒武纪在海洋的碳周期记录了重要不安，并且可能在生物进化上有深刻影响。在以前的研究，香料在华南从Jiangnan斜坡带被报导了。评估香料的深测术的程度，我们在Jiangnan盆在Shaijiang节从上面的Qingxi形成调查石灰石样品。我们的结果为两碳酸盐碳显示出积极旅行(13C)并且器官的碳(13Corg)同位素，以及在碳酸盐的硫同位素的并发的积极移动联系了硫酸盐(CAS，34SCAS)和黄铁矿(34S不含糊地在Jiangnan盆显示香料的存在的黄铁矿),。13CQingxi石灰石的carb由二的一个因素暗示器官的碳埋葬的相对流动的增加。在34SCAS和34S黄铁矿与极其低的集中并且空间地在海洋被归因于提高的黄铁矿埋葬海水硫酸盐的异构的同位素的作文。这里，我们建议海水硫同位素的异质能被不稳定的器官的硫化合物产生(VOSC，例如methanethiol和dimethyl硫化物)在在香料期间是普遍的sulfidic大陆人边缘的形成。32在空气的充实S的VOSC，在32从大陆人边缘的S到开的海洋，提高34在大陆人边缘的海水硫酸盐的S。一个简单盒子模型显示在大陆人边缘的大约35%～75%海水硫酸盐需要被搬运经由VOSC形成打开海洋。

简介：Nitrogen(N)useefficiencyisusuallylessthan50%,anditremainsamajorprobleminricecultivation.Controlledreleasefertilizer(CRF)technologyisoneofthewell-knowneffortstoovercomethisproblem.TheefficiencyofCRF,however,isverymuchdependentonthetimingofnutrientrelease.ThisstudywasconductedtodeterminetheprecisetimeofNuptakebyriceasaguidelinetodevelopefficientCRF.FertilizerNuptakebyriceatdifferentgrowthstageswasinvestigatedbyusing15Nisotopictechnique.Ricewasplantedinpots,with15NureaasNsourceattherateof120kg/hm2.Potassiumandphosphoruswereappliedatthesamerateof50kg/hm2.Standardagronomicpracticeswereemployedthroughoutthegrowingperiods.Riceplantswereharvestedeverytwoweeksuntilmaturationatthe14thweekandanalyzedfortotalNand15Ncontent.Nitrogenderivedfromfertilizerwascalculated.TotalNuptakeinplantsconsistentlyincreaseduntilthe11thweek.Afterthat,itstartedtoplateauandfinallydeclined.Moreover,Nutilizationbyriceplantspeakedat50%,whichoccurredduringthe11thweekaftertransplanting.Nderivedfromfertilizerinriceplantswereintherangeof18.7%to40.0%inallplanttissues.TheremainingNwasderivedfromsoil.Basedonthisstudy,NreleasefromCRFshouldcompletebythe11thweekafterplantingtoensurethemaximumfertilizerNuptakebyriceplants.EfficientCRFshouldcontributetohigherNderivedfromfertilizerwhichalsoresultedinahighertotalNuptakebyriceplants,increasingthepotentialofricetoproducehigheryieldwhileatthesametimeofreducingloss.

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简介：Mangrovesaccumulatesedimentarysequences,wherecorescanprovidehistoricalrecordsofmangroveevolutionwithpastclimatechangeandhumanactivity.ThestudytracedthehistoryofmangroveevolutionduringthepastonehundredyearsinamangroveswampofMaoweiSea,SWChina.Thesedimentationrates(0.38-0.95cmyr-1)werecalculatedonthebasisofln(210Pbxs/Al)andmassdepthinthecoresediments.Chemicaltracers,suchasδ13CorgandC:Nvalues,wereutilizedtotracethecontributionofmangrove-derivedorganicmatterusingaternarymixingmodel.Becauseofpotentialdiageneticalterationand/oroverlapintheisotopicsignaturesofdifferentcomponents,simultaneoususeofmangrovepollendiagramscanhelptosupplementsomeoftheselimitations.Combinedwithmangrovepollen,mangroveevolutionwasreconstructedandcouldbedividedintothreestages:flourishment（1886-1905AD）,slightdegradation（1905-1949AD）andrapiddegradationperiod（1949-2007AD）,whichwasconsistentwithpreviousreports.Thereclamationofmangroveswampstoshrimppondswasthemajorreasonforrapiddegradationofmangroveecosystemsinrecentyears,ratherthanclimatechangeintheregion.

简介：AbstractTheGartnerkofelboreholeisoneofthemostthoroughlystudiedanddescribedPermo-Triassicsectionsintheworld.Detailedbulkorganiccarbonisotopestudiesshowanegativebaseshiftfrom-24%0to-28%0intheLatestPermianwhichlattervaluepersistsintotheEarliestTriassicafterwhichitdecreasesslightlyto-26‰.Twostronglynegativepeaksof〉-38‰intheLatestPermianandalesserpeakof-31‰intheEarlyTriassicaretoonegativetobeduetoagreaterproportionofmorenegativeorganicmatterandmustbeduetoverynegativemethaneeffects.TheoverallchangetomorenegativevaluesacrosstheBulla/Teseroboundaryfitstherelativeriseinsealevelforthistransitionbasedonthefacieschanges.ApositiveshiftinorganiccarbonisotopevaluesattheLatePermianEventHorizonmaybeduetoanincreaseinland-derivedorganicdetritusatthislevel-afeatureshownbyallTethyanPermo-Triassicboundarysectionsthoughtheseothersectionsdonothavethesamevalues.Carbonatecarbonisotopetrendsaresimilarinallsectionsdroppingby2-3unitsacrossthePermo-Triassicboundary.Gart-nerkofelcarbonateoxygenvaluesaresurprisingly,con-sideringtheubiquitousdolomitization,compatiblewithvalueselsewhereandindicatereasonabletropicaltemper-aturesof60~CintheLatestPermiansabkhasto20-40℃intheoverlyingmarinetransitionbeds.Increasedland-derivedinputattheLatePermianEventHorizonmaybeduetooffshoretransportbytsunamiswhosedepositshavebeenrecognizedinIndiaatthislevel.

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：Asimplemethodisappliedtocalculatingtheisotopeshifts(ISs)on5S1/2→4D3/2,5/2transitionsof87,88Sr+.FirstwehavecalculatedtheISsoflowertransitionsonaseriesofalkali-likesystemssuchasB2+,Ca+andBa+,whichareinagreementwithotherworks.ThentheISson5S1/2→4D3/2,5/2transitionsof87,88Sr+,whichareusefultostudytheSr+opticalfrequencystandard,areevaluated.

简介：三次积极的碳同位素旅行在Tahe油气体地里从中间上面的奥陶纪被报导，北Tarim盆。把biostratigraphy，中间的Darriwilian同位素碳旅行(MDICE)和Guttenberg碳同位素旅行(GICE)基于conodont被整个岩石的碳同位素数据的帮助从二个井核心从Darriwilian识别到早Katian。在conodontPygodusanserinus地区以内的积极旅行在早Sandbian被开发，并且变化范围是不亚于MDICE。因为在概括的全球碳同位素曲线的这次旅行的范围是短的，以前的研究几乎没对它给予注意，并且在这份报纸把早Sandbian称为同位素碳旅行(ESICE)。而且，这些积极旅行直接没在北Tarim与海水平变化和MDICE和GICE有关被识别能全球性在南部的中国，北美洲，南美洲，和欧洲被相关到那。SaerganFm。在KalpinDawangou露头的中间上面的奥陶纪的来源岩石与MDICE的地质的时间一致，ESICE，和GICE有强壮的关系到LianglitagFm的来源岩石。在盆。丰富的器官的碳埋葬是在积极同位素碳旅行的开始的一个重要因素。沉积外形的积极的氧同位素旅行，conodont动物志周转，减少的conodont总数差异，和变化显示在Tarim盆的早中间的奥陶纪的paleoceanographic环境的戏剧的变化近来从Darriwillian，和明显的冰库气候的结束开始了奥陶纪发生在ESICE。

简介：Shadong沉积物是在东方Tianshanorogenic带，和存款的地质的特征发现的第一大规模钨存款显示深深地隐藏的花岗石身体与矿化作用是遗传上相关的。从Shadong的锆石的LA-ICPMSU-Pb年龄隐藏了在这获得的花岗石研究是239湡瑩楯獤吗？？

简介：渐新世Huagang形成是在Xihu的主要沙岩水库下垂，位于华东海架盆的东方。与薄节的岩相学，紫外线荧光显微镜学，扫描电子显微镜学，和同位素地球化学的一条综合途径，不同diagenetic特征被识别，典型diageneticparasequences被建立，并且diagenetic液体进化历史为渐新世Huagang被重建在Xihu的南方的形成沙岩水库下垂。Huagang形成沙岩水库现在在mesodiagenesis的时期B，它经历了象机械压缩，毛孔衬里绿泥石水泥，长石溶解，石英硬化和溶解那样的重要diagenetic改变，并且焦化硬化。碳酸盐水泥(早陨铁，中等ferrocalcite和迟了的ankerite)的三种类型在Huagang形成沙岩水库被识别。碳和氧而迟了的碳酸盐水泥是，碳酸盐水泥的同位素的作文证明早方解石从碱的湖的环境猛抛仔细与器官的酸有关。到Huagang形成沙岩水库，它在成岩作用期间经历了溶解的二个主要事件。早溶解是象长石，锂的碎片，和碳酸盐水泥那样的不稳定的部件被酸的水溶解。第二溶解是石英和其它硅酸盐矿物质在碱的条件下面被溶解。烃收费的二个主要阶段发生在这个学习区域。第一个烃炮兵阵地在中等碳酸盐硬化以前但是对长石溶解和在结束的石英硬化的发作以后中新世。收费的第二烃在迟了的碳酸盐降水以后发生在第四级的时期。

简介：在Trans北方中国造山带的中间的片断定位了，FupingComplex在理解北方ChinaCraton(NCC)的进化历史被看作一个批评区域。建筑群由各种各样的高级、多样地使变形的岩石组成，包括灰色的片麻岩，基本granulite，角闪岩，有细密纹理的片麻岩和大理石，变形了到上面的角闪岩或granulite外形。它能被划分成四个岩石单位：FupingTTG片麻岩，Longquanguanaugen，Wanzi在上crustals，和Nanying花岗石的片麻岩。从FupingComplex的Wanzi在上crustals的大约200由岩屑形成的锆石的U-Pb年龄和Hfisotope作文被分析了。边界给的变形锆石上的数据1.82-1.84Ga变老，相应于NCC的最后的合并事件为在～2.10和～2.51Ga的火的锆石核心产量二年龄人口的数据，与在第2.5a2.9Ga之间散布的一些继承年龄。这些结果建议Wanzi在上crustals从FupingTTGgneisses(～2.5Ga)和Nanying花岗石的片麻岩(2.0-2.1Ga)被导出并且在2.10and1.84Ga之间扔了。有～2.51Ga年龄的所有锆石有起始的ε_(Hf)从+1.4珍视到+10.9的positive，建议在通过从披风的少年材料的增加的～2.5Ga的一个重要外壳的生长事件。为由岩屑形成的锆石的Hf同位素数据进一步暗示2.8Ga岩石是在下地壳的重要部件，它与从为东方块的Nd同位素数据的一个建议一致。2.10Ga人口的锆石有起始的ε_(Hf)-4.9to+6.1的价值，作为在2.1Ga.These结果与次要的少年材料贡献外壳的再融化混合解释了为西方的块从那是不同的，支持Fuping建筑群是在在东方块的西方的边缘的构造活跃环境的emplaced。

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