简介：学习的paleoforest遗体在18000m~2的一个范围以内被散布在内部Qianhu海湾的潮汐的地区，福建省。89个古老的树树桩能清楚地在paleoforest遗体被认出。相对，低使碳化树桩取样的10的显微镜的研究毫无疑问显示出四种：Glyptostrobuspensili(Staunt)Kouch，Schima出色Gardn，CinnamomumSchaeffer，和Litsea打。一些样品标明日期的~(14)C产出42560±3的年龄50到>43000一B.P.，相应于晚迟了的更新世。

简介：TheHydrobiosinDongpingLake,ShandongProvince,mainlyincludesphytoplankton,zooplankton,benthicanimals,fishesandhydrophyticvascularplants.Nitrogenandphosphorusaretherestrictivefactorsforthegrowthandpropagationofhydrophyta,thereforethekeytothepreventionandcontrolofeutrophicationinlakesliesinthecontrolofthecontentsofthetwoelementsinthewater.Artificialfishingofalgaecanreducetheconcentrationsoftrophicsubstancessuchasnitrogenandphosphorusinthewaterbodies,andbiologicalmeasuresmaydecreasethecontentsofthesetrophicsubstancesinthebottomsedimentsandthewaterbodies,therebyplayinganactiveroleinmodifyingtheeutrophicationofthelake.

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简介：TheAnshan-BenxiareaisoneoftheimportantplacesofthePrecambrianintheNorthChinacraton,inwhichalotofoldgeologicalbodieswerefound,includingtheBaijiafenmylontizedgraniticgneissof3.8Ga,theChentaigougneissicgraniteof33Gaandthesupracrustalrocksandassociatedgranitesofrelativelyyoungerages.Basedontheagedataandothergeologicalinformationobtainedinrecentyeais,mispaperestablishesfourfold-divisonschemeoftheArchaeanintheAnshan-Benxiarea.Thetimeboundariesare2.5,2.8,3.2and3.6Ga,correspondingtothoserecommendedbytheInternationalSub-commissiononPrecambrianStratigraphy.Thispaperalsodiscussessomequestionsrelatedtothecrustalevolutionoftheearlyhistory,andindicatesthatitispossibletofindoutmoreresidualcrustalmaterialsofolderthan2.8Ga.

简介：TheDajiangpingpyritedepositlocatedinthemiddlesectoroftheYunkaiupliftinwesternGuangdongisastratiformsulphidedepositoccurringinSinianmarineclasticandfineclasticrocks.Theformationofthedepositwasrelatedtosubmarineexhalationandhotbrinedeposition.Apartofitwasreformedbylate-stagehydrothermalsolution.Theδ34Svaluesofpyritevaryfrom-25.55‰to+21.07‰,whichareinverselyproportionaltothecontentoforganiccarboninoreandpyrite.Passingfromstripedfine-grainedpyriteoretomassivecoarse-grainedpyriteore,i.e.fromsouthtonorth,thesulphurisotopiccompositionchangesfromthelightsulphur-enrichedonetotheheavysulphur-enrichedone.Theleadisotopiccompositionofstripedoreisconsistentwiththatofthecountryrocksoforebodiesandtheleadisradiogenicleadderivedfromtheuppercrust.Theleadisotopiccompositionofmassiveoreisrelativelyhomogeneousandits206Pb/204Pb,207Pb/204Pband208Pb/204Pbratiosareabitlo

简介：InNo.50kimberlitepipeofFuxianCounty,LiaoningProvince,aneclogiteinclusion(nodule),whichisextremelyrareinkimberlites,wasdiscoveredandphlogopiteexsolutionlamellaewerefoundingarnetsoftheinclusion.Microscopic,TEMandenergyspectralobserva-tionsandstudiesconfirmedthattheselamellaearephlogopite.Theyarecolourlessandacicularinsection,generally0.5-5μminwidthand10-100μminlength.Nevertheless,finelamellae,0.05-0.1μmwideand1-2μmlong,arealsowelldeveloped.Along[111]ofthegarnet,threesetsofphlogopitelamellaeshoworientedarrangementapproximatelyatanglesof60°-70°,indi-catingthattheselamellaemightbetheproductofexsolutionfromgarnetasaresultofpressure-releasewheneclogiteascendedfromtherelativelydeepleveltotherelativelyshallowlevelofthemantle.Tinyacicularexsolutionminerals(orinclusions)arecommonlyfoundingarnetandpyroxeneineclogiteinclusionsofkimberlitesallovertheworldandithasbeenre-portedthattheidentifiedexsolutionmineralsincludepyroxeneandrutile.Thisisthefirsttimethatphlogopiteexsolutionlamillaewerefoundineclogiteinclusionsintheworld.

简介：ThestudyconsistsoftheidentificationoflandformssubjecttoalluvialfanfloodinginactivesectorsoftheZondarangepiedmont.IntheDepartmentofPocito,locatedabout5kmsouthwestofSanJuanCity,aseriesofalluvialfanshavebeenidentified.Thesealluvialfansarelocateddownstreamofthenaturaldrainagebasinscoveringanareaofapproximately130km^2towardstheeasternslopesoftheZondarangeatamedianelevationof2,000ma.s.l.

简介：TheZudongandGuanxigranitesareoriginalrocksoftheionadsorption-typeHREEandLREEdepositsinweatheringcrustofgranites.TheΣREEvalueandLREE/HREEratiooftheZudonggraniteare264ppmand0.81-0.24respectively,andtheaverageY/ΣREEratiois35.8-54.5%.Thisismainlyduetomagmaticcrystallizationandevolutionanddeutericmetasomatism(albitization,muscovitizationandfluorite-doveritization).Thesealterationsresultedinendogenicmineralizationsofyttrium-groupREEfluorinecarbonates,silicatesandarsenates.TheGuanxigraniteischaracterizedbyLREEenrichment(theaverageLREE/HREEratiois2.43).

简介：TwosequencescanbeidentifiedinthesedimentarystrataofthelowerTertiaryShahejieFormationintheZhanhuahollow.Thelowstand,lake-transgressiveandhighstandsystemstractswereformedunderthecontrolofancientstructure,palaeotopography,palaeoclimate,sed-imentsupply,marine-transgression,andsoon.Inthepapertheauthorspresentacompositese-quencestratigraphicalsectionoftheShahejieFormationinthisarea,andexpoundthebounda-riesofparasequences,parasequencessetandsystemstractsandevolutionsoflakesequencestratigraphyandsedimentologyanddiscussvariousfactorscontrollingthelakelevelfluctuation.Thedifferencesbetweenlakeandmarinesequencestratigraphyarealsoindicatedinthepaper.Thelakesequencestratigraphicalstudyshouldbebasedonasyntheticanalysisofstructuralevo-lution,palaeomagnetism,palaeoclimaticchanges,geologicalWelllogs,seismicandloggingdata,palaeontologicaldata,globalsealevelchanges,andsoon.Thesequencestratigraphicalevolutioniscloselyrelatedtotheformation,developmentandeliminationofthewholebasinandthesedimentaryprocess.

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简介：由使用SHRIMPU-Pb和单个锆石逐步的蒸发方法，作者从东方Hebei为granitoids获得了一些结果省。Yuhuzhaihyperthenetonalitic花岗石被形成2550妈以前，Qingyangshugabbroic片麻岩2536妈，Luecao附近的theYinmahegranodioritic片麻岩，Lulong县，2533妈，gabbro-dioritic片麻岩nearLongwan，Qianxi县，2518-2515妈，在Zunhua2515的Qiuhuayutrondjemitic片麻岩妈，在Zunhua2495妈的theXiaoguanzhuangtonalitic片麻岩，和在Qianxi县2492Ma的Cuizhangzi片麻岩。这些geochronilogical数据尽管多样，在作文，类型和起源表明那，在东方Hebei省的花岗石的片麻岩是emplaced并且在magmatic的一个相当短的时期结晶活动。在这小调子差距的片麻岩的如此的大数量的形成建议它是在Neoarchean的结束的一个批评外壳生长阶段。各种各样的类型的事实thatgranitoids同时发生了暗示一在plating(披风羽毛)下面大规模活动，它当时为外壳生长负责。

简介：摘要：一条新mamenchisaurid恐龙，Eomamenchisaurusyuanmouensis情报etsp。nov。从Zhanghe形成基于一架不完全的骨骼被树立，Yuanmou的中间的侏罗记，云南省。新taxon被pleurocoels的缺席与稍微凸的前面的关节的表面在背面的vertebrae和背面的verterbrae描绘，中等凹面以后的关节的表面；第四trochanter在腿节上posteromedially被开发；到腿节的胫骨的长度比率是约0.64；并且坐骨的柄是像杆的。以后的背面的vertebrae的二熔化centra(假定第9并且第10背面的vertebrae)类似于在另外的mamenchisaurid恐龙的那些包括Mamenchisaurushochuanesis，M。youngi和Chuanjiesaurusanaensis。因此，centra的熔化第九并且第十背面的vertebrae能作为Mamenchisauridae的一个synapomorphic人物被认出。

简介：Deepxenolithareimportantsamplesforustoknowcompositionandnatureofthedeepcrust.Therearemanynewvolcanoswhichcanallkindsofxenolithssuchasalowercrustalgraulite,anduppermantle-derivedperidoliteandlherzolite.IneasternChina,thereoccuredmanydeepxenolithsinMesozoic-Cenzoicalkalinebasalt.Besidesthese,somesmallvolcanoseruptionswerefoundedinsouthernHunanprovince,whichageisabout132-151Ma.

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简介：LaoyalingstratiformcopperdcpositislocatcdlokmeastofTonglingcity,AnhuiProvlncc.ItisatypicalstratiformdcpositinthclowcrandmiddlearcaofYangtzorivcr,farfromplutonicrocksandhostedinPcrmiansilicalites.Thcorcbodicsoccuraslaycr,likelayerandlcnsc,whichhavethesameoccurrcnceasstrataandbotliofthemwcrefoldcd.Ore

简介：在从Chengdu平原(CP)的这个学习Chengdu红地球(CRE)中，四川省，被分析为它的元素(专业和踪迹元素)并且同位素(Sm-Nd)地球化学并且与从在北中国的中国黄土高原(CLP)的更新世黄土和paleosol样品相比。CRE的geochemical作文类似于北方中国黄土，并且也类似于平均UCC。这显示当黄土在北中国扔，CRE从经历了众多的上面的外壳的再循环过程的混合得好的沉积protoliths被导出。然而，在CRE和北方中国黄土的geochemical特征的明显的差别也在我们的结果被揭示。为化学上稳定的元素，CRE有更高的Ti，Zr，Hf和更低的REE，与从CLP的黄土样品比较的Ba内容。进一步的分析证明CRE有更高的TiO2/Al2O3，SiO2/Al2O3，Ba/Rb和更低的Ce/Yb，Eu/Yb，LaN/YbN和LREE/HREE比率。在内容和Nd(0)在CRE珍视的Sm-Nd同位素的地球化学，Sm和Nd比在北方中国黄土的那些显著地高。在在四川盆和包围区域与Ti的高背景集中与一致的CRE的更高的TiO2内容。更低的REE和更高的Sm，Nd，Nd(0)价值与在西南四川盆的暗岩的宽分发有关。CRE的元素、同位素的地球化学显示在CP的eolian材料主要来自四川盆和包围区域，它在CLP不同于黄土存款。