摘要
BasedontheseismicdatagatheredinpastyearsandthecorrelationbetweentheseaandlandareasoftheLowerYangtzePlatform,thestructuralcharacteristicsoftheSouthYellowSeaBasinsincetheIndosiniantectonicmovementisstudiedinthispaper.ThreestagesofstructuraldeformationcanbedistinguishedintheSouthYellowSeaBasinsincetheIndosinian.Thefirststage,LateIndosiniantoEarlyYanshanian,wasdominatedbyforelanddeformationincludingboththeupliftingandsubsidencestagesunderanintensivelycompressionalenvironment.Thesecondstage,whichiscalledtheHuangqiaoEventinthemiddleYanshanian,wasachangeforstressfieldsfromcompressiontoextension.Whileinthethirdstage(theSanduoEvent)intheLateHimalayan,thebasindevelopedadepressionintheNeogene-QuatemaryafterriftingintheLateCretaceous-Paleogene.Thelong-timeevolutioncontrolled3basinformationstagesfromaforelandbasin,thenafaultbasintoafinaldepressionbasin.Inconclusion,sincetheIndosinian,theSouthYellowSeaBasinhasexperiencedcompressionalfoldandthrust,collisionalorogen,compressionalandtensionalpulsation,strike-slip,extensionalfaultblockandinversionstructures,compressionandconvergence.TheNE,NEE,nearlyEWandNWtrendingstructuresdevelopedinthebasin.Fromwesttoeast,thestructuraltrendchangedfromNEEtonearEWtoNW.Whilefromnorthtosouth,theychangedfromNEEtonearEWwithastrong-weak-strongzoningsequence.Vertically,themarineandterrestrialfaciesbasinsshowa"seesaw"patternwithfoldandthrustintheearlystages,whichisstronginthenorthandweakinthesouthandanextensionalfaultinlaterstages,whichisstronginthenorthandweakinthesouth.Inthemarinefacies'basin,thrustdeformationismoreprevailingintheupperstructurallayerthanthatinthelowerlayer.ThetectonicmechanismintheSouthYellowSeaBasinismainlyaffectedbythecollisionbetweentheYangtzeandNorthChinaBlock,whilethestressenvironmentoflarge-scal
出版日期
2018年04月14日(中国期刊网平台首次上网日期,不代表论文的发表时间)