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简介：DisseminatingscientificknowledgehasalwaysbeenakeytopicinIUGS'activities.TheUnionhasproducedarangeofpublications(books,journals,maps,charts),bothonitsownandincooperationwithotherorganizationsandpublishers.Someoftheseworkshavebeenconcernedwithgeologicalstandards,whileothershavebeenoverviewsofcurrenttopics,

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简介：Asevidenceforabruptenvironmentalchangegrows,thetaskofassessingtheeffectsofrapidgeologicalprocessesisbecomingmoreimportant.Increasinginterestintrackingandreportinglandscapechangesthattakeplacewithinanormalhumanlifetimeis,thus,notsurprising.IUGScontinuestoemphasizetheimportanceoftrackingrapidgeologicalchangeinStateof

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简介：Firstofall,onbehalfofthenewEditorialBoard,Iwouldliketoexpressoursincereappreciationforyourcontinuingsupportofourjournal.Thisjournal,foundedin1922,istheoldestgeologicaljournalinChina.AstheflagshipjournaloftheGeologicalSocietyofChina,ithasbecomemoreandmoreinfluentialinearthsciencesinChinaandbeyond.ThejournalisnowindexedbySCI,CAandmorethan20otherdatabases,withanimpactfactorvaryingbetween1.58and2.15fromyeartoyear.Itisco-publishedbytheGeologicalSocietyofChinaandWiley-BlackwellCo.

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简介：Dalingheornisliweii情报。etsp。nov，一只新enantiornithine鸟在东北中国从早白垩纪Yixian形成被收集。它是在中生代鸟中的一只高度专业化的异种扬抑抑格脚的第一个记录。有shorthypocleidum的塑造Y的叉突与另外的enantiornithines的不同。未成年者掌部比专业柔韧、长掌部。一条长多骨的尾巴与dromaeosaurids并且这样类似于那些的V形臂章20尾的vertebrae创作了，再加亮在鸟和非鸟的theropods之间的进化关系。保存得很好的小翼羽毛和一只异种扬抑抑格脚为Dalingheornis的树木的习惯提供充分证据。

简介：EdiacaranDickinsonia为是要分到许多数的唯一的石块是著名的，从它的自己的地衣，Cnidaria，Platyhelminthes，环节动物门，和一扇门到一个非后生动物的王国。从在北俄国的白海的冬季海岸上的Ediacaran有细密纹理的沙岩的一个新标本，以前有约5.55亿年的年龄，保存了明确的动物的有说服力的内部解剖，与现存栉水母(梳子果冻)的南方的运河可比较。另外，当以前想了，我们作为一个biradiallysymmetrical动物而非一个双边的动物重新考虑Dickinsonia。因此，动物性质ofDickinsonia很好被建立，它的亲密关系最可能被结盟到栉水母。这研究是不仅把Dickinsonia从Vendobionta移开，而且在寒武纪的“爆炸”前向前把栉水母的石块记录带到2000万年。

简介：<正>1IntroductionSaltLake,asakindofchemicalresources,hasbeenattractedtomanyresearchers,especiallytheresourcesoflithium.Asreported,manykindsofbrinesexistintheworlddependingonthecompositionsofthebrine.Basedonthechemicalcompositionthebrinescanbeclassifiedasthetypesofchloride,carbonate,sulfate.Fordifferent

简介：Evidenceforamantleand/orbasalticcomponentinKTboundarydistalejectaisapparentlyinconsistentwithejectionfromChicxulubCratersinceitislocatedon~35kmthickcontinentalcrust(DePaoloetal.,1983;Montanarietal.,1983;HildebrandandBoynton,1988,1990).Thisevidence,alongwithejectedterrestrialchromites(Oldsetal.,2016)suggesttheimpactsampledterrestrialmaficand/orultramafictargetrockswhicharenotknowntoexistintheChicxulubtargetarea.Possibleresolutionstotheparadoxare:1)theexistenceofanunmapped/unknownsutureinYucatanPlatformbasement,2)anadditionalsmallunmapped/unknownimpactsiteonoceaniclithosphere,or3)anadditionallargeimpactonoceaniclithosphereorcontinentalmargintransitionaltooceaniclithosphere.Thethirdhypothesisiselaboratedheresince:1)OphiolitesnearesttoChicxulubcraterarefoundinCubaandapparentlywereobductedinlatestCretaceous/earliestDaniantimes(García-Casco,2008),inconsistentwiththedocumentedEocenecollisionofCubawiththeBahamasplatform;and2)Cubahoststheworld’sthickestknownKTboundarydeposits(Iturralde-Vinent,1992;Kiyokawaetal.,2002;Tadaetal.,2003).Theseandgeometricconsiderationssuggestoceaniccrustanduppermantlerock,exposedasophioliteintheGreaterAntillesislandchain,markstherimofaroughly700kmdiameterimpactbasindeformedanddismemberedfromanoriginallycircularformbyatleast50millionyearsofleft-lateralsheardisplacementalongtheNorthAmerican-Caribbeantransformplateboundary.

简介：摘要：在这份报纸，试验性的研究被进行以便从高氧化铝的苍蝇灰直接测试sintering多铝红柱石的可行性，没有增加任何额外的材料。结果证明在大多数sintered样品的多铝红柱石内容是超过70%。从beneficiated苍蝇灰的样品sintered在一样的合成条件下面从同样收到的苍蝇灰比那些有多铝红柱石的一个更高的内容。为了获得一个平等者，多铝红柱石总计，更高的sintering温度比为同样收到的苍蝇灰为beneficiated苍蝇灰被需要。就sintered多铝红柱石的物理性质而言，有利sintering温度是1400

简介：Thisstudyisthefirsttoreporttheradiocarbonages,mineralogical,morphological,geochemicalandstableisotopecompositionsofcalcretesfromNeogenesedimentsaroundlakesEymirandMoganintheG?lba??BasinofCentralAnatolia.MorphologicallydifferentformsofcalcretesintheG?lba??Basinincludepowdery,nodular,fractureinfill,laminarandhardpantypes.Calciteisthedominantmineralofcalcretecompositions;thediagnosticfeaturesofdessicationcracks,randomfractures,MnOliningsanddensespariticinfillingsareobserved.Chemicalanalysesshowaridconditionswithmeanannualprecipitationof<50mm.δ13Ccompositionsofthecalcretesrangefrom-6.77‰to-9.32‰PDB,typicalformostpedogeniccalcretes,reflectingthedevelopmentunderseasonallyaridclimatesandC3-dominatedvegetationcover.δ18Ovaluesarebetween-5.57‰and-7.80‰PDB,indicatingtheformationfrommeteoricwaterinavadosezoneenvironment.TheresultssuggestthattheMiddlePleistocenewasariderandwarmer,favouringtheformationofpalygorskiteinassociationwiththedifferentformsofcalcreteoccurrences,whereastheLatePleistocenewasdryerandcooler,supportingthedevelopmentofcalcretes.

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简介：ＩＮＴＲＯＤＵＣＴＩＯＮＮｏｒｔｈＱｉｌｉａｎＭｏｕｎｔａｉｎｓｈａｓｕｎｄｅｒｇｏｎｅｔｈｒｅｅｋｉｎｄｓｏｆｔｅｃ－ｔｏｎｉｃｓｙｓｔｅｍｓｓｉｎｃｅＰｒｏｔｅｒｏｚｏｉｃ，ｎａｍｅｌｙｃｏｎｔｉｎｅｎｔａｌｒｉｆｔ，ｐｌａｔｅｔｅｃｔｏｎｉｃａ...

简介：Struthiolinxiaensis是从亚洲的最旧的石块驼鸟到今天为止。这篇论文分析Struthiolinxiaensis的蛋壳的微观结构。SEM和病理学的结构发生了的轻显微镜的结果表演与毛孔运河的形成联系了。这结构的特征是圆柱的层的晶体在毛孔运河的更低的部分附近，并且形成宽广结构。这个结构单位比运河更严重地向上收缩并且看起来像一棵“大蒜”，它第一次在脊椎动物蛋壳被观察。许多证据显示这结构同时与列被扔。光线的节看法建议“大蒜结构”不是反的结果在鸟的输卵管的蠕动的波浪。“大蒜结构”的最可能的过程当钙化时，形成是在有有瑕疵的酸化的毛孔运河附近的列单位，或在石灰质的蛋壳在器官的矩阵的蛋白质侧面与变化有一些关联。