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1、surficialsediments．Atthesametime，claymineralcompositionsofthesuspensionsfromboththeYangtseRiveandtheYellowRiverwereanalysedrespectivelyforcomparison．TheresultshowsthattheclaymineralcompositionofthestudyareaisconsistentwiththatofYellowRiversuspension．Clasticmineralsofthe30samplesarecharacterized
2、byhigherinstablemineralandflakymineral．Heavymineralscallbedividedintotwogroups，i．e．a(chǎn)nphibole-epidotegroupandflakymineral—autogeneticpyritegroup．Thetwogroupsoccurindifferentsedimentaryenvironments，incloserelationtotheYSCC，reflectingstrongerandweakerdynamicconditionsrespectively．Chemicalanalysisw
3、asmadeforthemajorelementincludingK，Na，Ca，Mg，AI，F(xiàn)e，P，Si，SandCIandtraceelementincludingBe．Sc，Ti，V，Cr，Mn，Co，Ni，Cu，Zn，Ga，Sr，Zr，Nb，Mo，Ba，Hf,Ta，Pb，Th，UandnEE，suchasLa，Ce，Pr，Nd，Sm，Eu，Gd，Yb，Dy，Ho，Er，Ym，Yb，LuandYofthe241samplesfromthestudyareabyusingX—rayFluorescenceSpectrometerandInductivelyCoupledPlas
4、ma-MassSpectrometer．MajorelementK，F(xiàn)e，MgandAIshowpositivecorrelations．TransitionelementCr,Fe，Co，NiandZnshowevenbettercorrelation，whereasMn，CuandZrexhibitpoorcorrelationwithotherelements，revealingtheirspecifcgeochemicalcharacter．Wecomparedtheuppercontinentalcrust(UCC)normalizedREEpatternsbetweent
5、hesamplesandthesamplesfromYangtse●，’’4Rive，YellowRiverandotherriversaroundtheYellowSea．TheresultshowsthatUCC·normalizedREEpatternofsamplesfromthestudyareaismuchmoresimilartothatofYellowRiversediments，buttheabsoluteabundanceofREEinthestudyareaisslightlyhigherthanthatofYellowRiversedimentsprobabl
6、yowingtotheeffectsof‘‘grainsize”andthecontributionofYellowSeaColdWaterandYellowSeaWarmCurrent，whichcounldbringfineparticlesoriginatedfromYaluRiverandYangtseRiveintothestudyarea．Keywords：offshoreofnorth—easternShandongPeninsula：grainsize：miheralcompositiORS：geochemicaIcharacteristicaofelements：p
7、rovenanceofsediment：YeIIOWSeaCoastaICurrent山東半島東北部演淺海區(qū)表層沉積物特fil!SI沉積作用前言陸架區(qū)是海陸作用交會(huì)的區(qū)域，歷來(lái)是地學(xué)界研究的熱點(diǎn)區(qū)域之一，探討其沉積規(guī)律和成因，對(duì)我們認(rèn)識(shí)海陸的變遷和演化具有極其重要的意義。1陸架沉積研究現(xiàn)狀世界陸架沉積的研究大致經(jīng)歷了3個(gè)階段，總結(jié)出3種成因模式：最早，Johnson于1919年認(rèn)為陸架水體與海床是一個(gè)動(dòng)力“t衡體系，陸架上每個(gè)部位的沉積物粒徑大d,矛F(xiàn)I地
