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简介：AmarinestratigraphicsequenceacrossthePliocene/Pleistoceneboundaryhasbeenfoundinthenorth-erncontinentalshelfoftheSouthChinaSea.ThemarineQuaternarydepositsintheYinggehaiBasinmayex-ceed2,000minthickness,probablyprovidingthebestsectionforstudyingthelowerboundaryofthemarinePleistoceneinSouthChina.TheverticalsuccessionwithplanktonicforaminifersandnannofossilsrevealedinboreholesinthebasinhasbeenwellcorrelatedwiththatintheinternationalstratotypesectionofthePliocene/PleistoceneboundaryatVrica,Italy,resultingintheacquirementofabiostratigraphicboundaryat1.64Ma.Thisboundary,however,doesnotcoincidewithanyprominentlithologicalpalaeoenvironmentalchangesinthestudyareaandcanhardlybeusedingeologicalpractice.Thereare,incontrast,significantchangesatthelevelofLADofGloborotaliamulticameratasensulatolocatedbelowtheabove-mentionedboundary.Thepercentageofplanktonicforaminifersinthetotalpopulationandpreservationofforaminiferaltestsdisplaygreatchangesatthislevelcorrespondingtoaclearonlapontheseismicprofilesandindicatingadepositionalhiatusatca.2.0-2.5Ma.SincethelevelcanbewidelytracedinthePearlRiverMouthBasinandtheBeibuGulfBasinandwellcorrespondswiththemarkeddepositionalenvironmentalchangesrecordedinthewestPacificandotherregions,itisrecommendedthatthePlio/PleistoceneboundarybedrawnatthelevelofGr.multicameratasensulatoLAD,roughlyconcurrentwiththeGauss/Matuyamaturn.

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简介：摘要：Sapeornithidae是早白垩纪原始的鸟的一个基础pygostylian家庭，在哪个仅仅一个类和种，Sapeornischaoyangensis，以前被报导。这份报纸处理这个家庭，的一个新类和种Didactylornisjii情报。etsp。nov，它在西方的辽宁从早白垩纪Jiufotang形成被发掘。根据我们的种系发生的分析，两张Didactylornis情报。nov。并且一个姐妹组，它对clade基础由Confuciusornis并且更加形成了的Sapeornis形式比到长尾巴的avialian鸟与短尾巴的pygostylian鸟有关仔细导出鸟，和更多。pygostylian鸟的早历史糟糕除了Confuciusornis和Sapeornis的研究被记录。Didactylornisjii情报的发现。etsp。nov。在鸟的早进化上为学习增加新材料。

简介：早被子植物的丰富的石块在Yixian形成发现了(125妈，早白垩纪)表明了出人意料地高的差异和各种各样的繁殖策略，并且因此有在早被子植物进化上打开新灯。这里，使用轻显微镜并且扫描电子显微镜，我们记录Baicarpus情报的几结果实。nov。从辽宁省，中国。新taxon的每结果实包括在形成瓮的gynobase依附的几心皮离生的心皮/水果。每张水果/心皮有一种坚持的直式样和一个卵巢围住一粒单个种子。这些石块植物表明一个新花的组织并且因此在Yixian形成提高我们被子植物的差异的理解。和以前报导的，这石块被子植物比广泛地接受早为被子植物建议一起源时间。

简介：TheTriassicLowerKaramayFormation(T2k1)isoneofthemainoil-bearingstratigraphicunitsinthenorthwesternmarginofJunggarBasin(NWJunggar),China.Basedonanintegratedinvestigationofoutcrops,welllogsandseismicdataofNWJunggar,theLowerKaramayFormationissubdividedinto2sets,6bedsand13layers.Also,itisconsideredthatthealluvialfan,thebraidedriver,themeanderingriverandtheshore-shallowlacustrineweredevelopedduringtheearlyperiodofMiddleTriassicinKaramaydistrictsⅠ,Ⅲ.TheLowerKaramayFormationdepositsthefollowing9sedimentarysubfacies:thelowerfan,themiddlefan,theupperfan,thebraidedchannel,theoverflowbank,theriverfloodofbraidedriver,themeanderingchannel,theriverfloodofmeanderingriver,theshore-shallowlacustrine.Seventeenmicrofaciessuchasthebraidedstreamchannel,thealluvialsandfloodplain,thealluvialglutenitefloodplain,thewaterchannel,thechannelbaretc.havebeenidentifiedinsubfaciesaswell.Thethicknessofstrataisfirstlyup-thinningandthenthickeningupwardtothetop,itisaprocessfromlarge-scalelacustrinetransgressiontopartlylacustrineregression.Furthermore,themicrofaciesplanardistributinglawprovesthattheremainingoilmayenrichalongthemarginofmicrofaciesbecauseoftheplanarmicrofacieschanges.Therefore,thisresearchisbeneficialforsearchingremainingoilinNWJunggarandprovidinginformationtotheproject"TheSecondaryExploration"ofPetroChina.

简介：1.ObjectiveDunhuangBasinisthelargestareaandthethirdhydrocarbonresourcespotentialbasinamongthebasinsofHexiCorridor,andalsoalowexplorationdegreebasin.Thesourcerockposition,characteristicsandhydrocarbongeneratingpotentialofresidualMid-LowerJurassicarestillunknown.TheprojectistoascertainthesourcerockdevelopmentandhydrocarbongeneratingcapacityofMid-LowerJurassic,tofindouttheresourcepotential,todelineatetheresourceprospectareaandtooptimizethefavorableareas.ItmaydirectthepetroleumexplorationinDunhuangBasin.

简介：BeddedchertsoccurringintheEarlyPermianGufengFormationintheLowerYangtzeregion,easternChina,arenearly20-80minthicknessandcontainvaryingamountsofradiolariansandspongespicules.TherearethreetypesofsectionfortheGufengFormation:chert,carbonateandchert-carbonatemixingtypes.Beddedchertsmainlyoccurinthefirstandthirdtypesofsection.Thedepocentresofsilicaaremarkedbysomesmall(notlargerthanafewthousandsquarekilometresinarea)rhombicorelliptichollowsandtheirformationwascontrolledbyfaults.Argillaceousvolcanicrocksinchertsoccurasnumerousthinlayers.BeddedchertsarecharacterizedbyhigherFeandlowerAlcontents,enrichmentinsuchtraceelementsasAs,Sb,Bi,Ga,Au,AgandCr,lowertotalREEabundance,negativeCeanomalyandvaryingdegreesofHREEenrichment.Thesecharacteristicsareimportantevidenceforhydrothermalcherts.Minoramountsofsubstancesofnon-hydrothermaloriginaremixedinthecherts.Thetempera

简介：摘要：不完全的postcranial鸟的骨骼从西方的内部蒙古的Otog旗帜的更低的白垩纪Jingchuan形成被描述并且指了Cathayornis的新种，C。chabuensissp。nov。这是从外面的辽宁省的Cathayornis的第一份报告。新发现显示Cathayornis与Otogornisgenghisi共存了，并且更多详细说明了在Otogornis代表的这二enantiornithine类表演之间的比较一个更原始的类比Cathayornis。我们的分析进一步显示Cathayornis是一只树木的鸟。从这个区域的Cathayornis的发现也证实鸟的忍受石块的Jingchuan形成比得上在西方的辽宁的上面的Jehol组的Jiufotang形成，并且应该被指中间迟了的早白垩纪。

简介：Thepaperdealswiththebackgroundfeatures,formationanddistributionofthechemicalel-ementsK,Na,Ca,Mg,Si,Fe,Mn,Cr,Ni,V,Co,Ti,Mo,Cu,Pb,Zn,As,Hg,Cd,Be,Li,Sr,B,F,Cl,BrandIinthegroundwaterintheregionofthemiddleandlowerreachesoftheYangtzeRiverandtheirrelationstothecompositionofthewater-bearingmedia,propertiesoftheoverly-ingrocksandsoils,redoxenvironment,andgroundwaterflowcondition,mineralizationandpHofgroundwater.

简介：ThecharacteristicsoftheTriassicsequencesdevelopedintheLowerYangtzeareadisplaysomegreatchangesinbothenvironmentandclimate.Thechangeofenvironmentwasatransitionfrommarinetocontinentviaalternatingenvironments.Thechangeofclimatewasatransitionfromtropic(torrid)towarmandwetclimateviasubtropicdryclimate.Thetypevariationsofthesequenceswerefromthemarinesequencestothecontinentalsequences,correspondingtothechangesofenvironmentsandclimates.Sequence1isatypeⅡofsequenceofmixedclasticandcarbonatesediments;sequence2isatypeⅠofsequenceofcarbonateplatform;sequence3isatypeⅠofsequenceofcarbonatetidalflat-saltlagoon,sequence4isatypeⅡofsequenceoflacustrinewithinmarinelayers,andsequence5isasequenceoflacustrine-swamp.Thedevelopment,distributionandpreservationofthosesequencesrevealthetectoniccontrolsandtheirchangesinthebackground.ThecollisionbetweentheYangtzeplateandtheNorthChinaplatewasagreatgeologicaleventinthegeologicalhistory,butthetimingofthecollisionisstilldisputed.However,thecharacteristicsofTriassicsequencestratigraphyandsealevelchangesintheLowerYangtzearearespondedtothiscoliision.ThecollisionstartedatthebeginningofmiddleTriassicandthegreatregressionintheLowerYangtzeareastarted22Maearlierthanthoseintheworld.Thetectonicconditionsoccurredbeforeandduringthecollisioncontrolledthedevelopmentofsequencesandtypechanges.

简介：二根不完全的骨头指了ankylosaurscapulocoracoid，肱骨被描述，它从Dachengzi镇的早白垩纪Jiufotang形成被发现，Kazuo县，辽宁省。Ankylosaur恐龙曾经在更低的白垩纪Yixian，Fuxin和西方的辽宁的Sunjiawan形成被发现了。在Jiufotang形成以内的ankylosaurs的出现在ankylosaurstratigraphic分发上改进我们的知识。基于scapulocoracoid的长度，新恐龙被估计超过6.0米长，在西方的辽宁代表最大的ankylosaur。

简介：摘要：除了以前报导的小壳的石块(SSF)，一个宏观的石块集合，包括的丰富的水藻，锥形的管状的石块形式，和可能的印象一放大了后生动物，在西方的湖北省的Yangtze峡区域来自更低的寒武纪的Yanjiahe形成，华南。可见石块在thinlaminatedsiltstone被保存或泥泞siltstone在815公里厚的碳酸盐存款之间设置了，浅水里的抑制本地消沉的可能代表的沉积背景在早寒武纪的Meishucunian阶段期间焦化站台。宏观的石块协会关于生活的进化提供重要石块证据从对寒武纪的爆炸间隔晚前寒武纪。

简介：Diabasbrottet,selectedbytheInternationalSubcommissononOrdovicianStratigraphyandin2002ratifiedbytheInternationalCommissiononStratigraphyastheGSSPoftheSecond(Upper)StageoftheLowerOrdovician,islocatedontheHunnebergMountaininsouthwesternSweden.ThestratigraphicsuccessionrepresentsanoutershelfenvironmentneartheBalticShieldmargin.Theshale-dominated,biostratigraphicallycomplete,richlyfossiliferousboundaryintervaliscompletelyexposedinadisusedquarry.TheGSSPisinthelowerTФyenShale2.1mabovethetopoftheCambrianandismarkedbythefirstappearanceofthegraptoliteTetragraptusapproximatusNicholson.Theboundaryintervalcontainsadiversegraptolitefaunaandbiostratigraphicallydiagnosticconodontsandtrilobitesthatmakeitpossibletodefinetheboundaryintermsofzoneschemesbasedonthesegroups.Inthisrespect,theDiabasbrottetandnearbysectionsareuniqueintheworldamongdescribedlocalitieshavingthisboundaryinterval.BasedontheappearanceofT.approximatus,thebaseoftheSecondStagecanbeidentifiedinmanygraptolitiferoussuccessionsroundtheworldbutthisleveliscurrentlymoredifficulttorecognizepreciselyinsomecarbonatesequencesoutsideBaltoscandia.WeproposetheSecondStagebecalledtheFloanStage.ItisnamedfortheVillageofFlo,whichissituatedabout5kmsoutheastoftheGSSP.

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：更低的二叠的山西()形成是在东北Ordos的主要煤气忍受的stratigraphic单位之一()盆，中国。基于井木头，核心，和露头的综合调查，我们描出山西形成的更低的成员的沉积外形并且作为SQ1，SQ2，和SQ3从底把继任划分了成三个第三顺序的序列到顶。山西形成的更低的区域在下列沉积外形或subfacies被扔：在Daniudi的水下的编织隧道，水下的interdistributary，嘴酒吧，沼泽地和架()在Heidaigou的煤气的地和编织隧道，和架和湖()露头。发辫河存款在每个序列形成lowstand系统道(LST)。编织隧道在Heidaigou露头标记顺序边界。有黑暗灰色的mudstone的架和湖depositional环境形成transgressive系统道(TST)。黑暗灰色的mudstone首先在编织隧道上面出现的地点标记首先泛滥的表面(FFS)，并且那的结束标记最大的泛滥表面(MFS)。highstand系统道(HST)存款在Daniudi煤气的域里是有在Heidaigou露头和沼泽地coalbed的沉积parasequence的有细密纹理的沉积。在编织三角洲前面的嘴酒吧沙身体，在每个序列形成LST，在Daniudi煤气的域里形成优秀水库。