Submarine Landslide Identified in DLW3102 Core of the Northern Continental Slope,South China Sea-中国期刊网

摘要 Inthispaper,wetakeDLW3101coreobtainedatthetopofthecanyon(nolandslidearea)andDLW3102coreobtainedatthebottomofthecanyon(landslidearea)onthenortherncontinentalslopeoftheSouthChinaSeaasresearchobjects.ThechronostratigraphicframeworkoftheDLW3101coreandelementalstrataoftheDLW3101coreandtheDLW3102coresinceMIS5areestablishedbyanalyzingoxygenisotope,calciumcarbonatecontent,andX-RayFluorescence(XRF)scanningelements.Onthebasisoftheinformationobtainedbyanalyzingthesedimentarystructureandchemicalelementsinthelandslidedeposition,wefoundthattheDLW3102coreshowsfourlayersofsubmarinelandslides,andeachlandslidelayerischaracterizedbyhighSi,K,Ti,andFecontents,therebyindicatingterrigenousclasticsources.L1(2.15–2.44m)occurredinMIS2,whichisaslumpsedimentarylayerwithasmallslidingdistanceandscale.L2(15.48–16.00m)occurredinMIS5andisadebrisflow-depositedlayerwithascaleandslidingdistancethataregreaterthanthoseofL1.L3(19.00–20.90m)occurredinMIS5;itsupperpart(19.00–20.00m)isadebrisflow-depositedlayer,anditslowerpart(20.00–20.90m)isaslidingdepositionlayer.ThelandslidescaleofL3islarge.L4(22.93–24.27m)occurredinMIS5;itsupperpart(22.93–23.50m)isaturbidsedimentarylayer,anditslowerpart(23.50–24.27m)isaslumpsedimentarylayer.ThelandslidescaleofL4islarge.

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Submarine Landslide Identified in DLW3102 Core of the Northern Continental Slope,South China Sea

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Submarine Landslide Identified in DLW3102 Core of the Northern Continental Slope,South China Sea

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