海坛岛的地貌及其发育演变

136199412MARINESCIENCEBULLETINVol.13,No.6Dec.,1994(,210093),,10,,,250232504N,119041119052E,27861km,,,19.5,1180.Zmm,(6.gm/s),(lood),,,,(1)1,NNE,,;,,(438.7m),,,,~~~,,,,:19940912*.6:119.45!19.501t123456789161710n1213V141518192021222313,,,,,,,2,,,10(1)2.1200~438.7m,,,NENw,,1150~400m,20~40,,,300~35om240~26om,,V,,,2.2200m,,1003,,,,,,,2.3som,,,,sm,10~15m,20~som,4555m70som6:,,,,,2.4,520m,20~50m,2~122.5,,,2o,5o,10~20m,30~45m,,o3,C3000050000a.B.P.,15000a.B.P.,2)2.62~lom,10~30m,1002.,,10m,1,,,,30~45m,50m;12~25m,4,,~~,,,1~sm2.81)2).1994()199313,5~Zom,100m,1~sm,,,5,,,433.1,,,,,,NENNE,SN,NEE,,,,6,,,,,,,,300~35om240~260m.06mm/a,sooxloa.B.p.400x10a.B.P.3.2,,,,,(70~som),,,,13600010400a2,,,,,6:()(),,_,,4~19mC41670a3,,,,,;;,,,,,,,40~50m,(),,,,,,13m,,,,250oa,,5~10m,NNE20007,,,4,:a),10.,,b),),,,3).().19866613l.,1994,49(4):2983062.,1987,6(1):40~443..,1993,13(1):1~124..,1993,12(4):385~3925..,1987,42(2):6..:,1985,465~5577..(),129~1411992,8(4):93~99LANDFORMANDEVOLUTIONOFHAITANISLAND,FUJIANPROVINCEChenFangStateLab.ofCoast&15..,9Univ.,9210093AbstraetThegeomorphologyoftheHaitanIsland15eomplexanddiversified,featuredbytypiealdevelopmentofeolian,marineandfluviallandforms.Thelandformeonfiguration15obviouslyeontrolledbytheregionalteetonielines,50thedistributionofhills,plainsandplatformsalternateswithoneanother.Theisland15elosetothePaeifieeontinentalmarginaetivezone.ThesubduetionofthePaeifPlateundertheEurasiaPlateofYanshenianstageeausedaseriesoffaultteetoniesandlargesealeofintrution,voleanismandmetamorphismandhassetthebasielandformframeworkoftheisland.FromthelateTertiary,theinterae-tionoftheneoteetonismeharaeterisedwithvertiealdifferentialfaultbloekmovementandtheexternalagentsdominatedbywind,surfaeeflowandoeeaniedynamieshavenotonlymouldedthemoderngeomorphologieallandseapebutalsodeeidedtheevolutiondireetionofthegeo-morphologiealproeesses.Frequentelimatesealevelehangesandtheintensifieationofhumanaetivitiesalsohaveprofoundinflueneesonthedevelopmentofthelandformoftheisland.KeyWordsHaitanIsland;FujianProvinee;evolution;landform;EastChinaSea