georefid:2013-046511SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2013-07-08T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1029/2010GC003431<gco:CharacterString>Slumping and mass transport deposition in the Nankai fore arc; evidence from IODP drilling and 3-D reflection seismic data</gco:CharacterString>2011-01-01publicationgeorefid:2013-046511doi:10.1029/2010GC003431Strasser, MichaelUniversity of Bremen, Centre for Marine Environmental Science, Bremen, GermanyauthorMoore, Gregory F.University of Hawaii at Manoa, United StatesauthorKimura, GakuUniversity of Tokyo, JapanauthorKopf, Achim J.University of Missouri, United StatesauthorUnderwood, Michael B.University of Florida, United StatesauthorGuo, JunhuaauthorScreaton, Elizabeth J.authorAmerican Geophysical Union and The Geochemical Society, United StatespublisherdocumentDigitalGeochemistry, Geophysics, Geosystems - G (super 3)12Multiple lines of evidence exist for a range of sediment mass movement processes within the shallow megasplay fault zone (MSFZ) area and the adjacent slope basin in the outer fore arc of the Nankai subduction zone, Japan. Diagnostic features observed in three-dimensional reflection seismic data and in cores of the Integrated Ocean Drilling Program (IODP) document a multifarious mass movement history spanning approximately 2.87 million years. Various modes and scales of sediment remobilization can be related to the different morphotectonic settings in which they occurred. From this evidence, we decipher the tectonic control on slumping and mass transport deposition in the Nankai fore arc. Three periods of intensified mass wasting coincided with pulses of enhanced activity on the splay fault: (1) an initial phase of juvenile out-of-sequence thrusting approximately 1.95 to 1.7 Ma, (2) a reactivation phase between approximately 1.55 and 1.24 Ma, and (3) at about 1 Ma, during a phase of uplift of the fore-arc high and motion along the MSFZ. We suggest that slope oversteepening, extensional stress regimes, and lateral transmission of fluid overpressures may have preconditioned the slope sediments to fail. Individual mass-wasting events may have been triggered by dynamic loading from earthquake waves and/or transient pulses of pore pressure along the splay fault. Overall, our results provide insights into the complicated interplay between tectonic and submarine mass movement processes. We demonstrate that detailed knowledge about the spatial and temporal distribution of submarine mass movements can be integrated into a holistic reconstruction of tectonostratigraphic evolution of accretionary margins.completedOceanographyApplied geophysicsaccretionary wedgesAsiabasinscontinental slopeExpedition 316Far Eastfault zonesfaultsfore-arc basinsgeophysical methodsgeophysical profilesgeophysical surveysIntegrated Ocean Drilling ProgramIODP Site C0004IODP Site C0008Japanlandslideslithostratigraphymarine environmentmarine sedimentsmarine transportmass movementsNankai TroughNanTroSEIZENorth PacificNorthwest PacificPacific Oceanpore pressurereflection methodssedimentsseismic methodsseismic profilessubduction zonessubmarine environmentsurveystectonostratigraphic unitsthree-dimensional modelstransportWest Pacificurn:org.iodp:exp:316urnlargerWorkCitationcampaignurn:org.iodp:exp:314:site:C0004urnlargerWorkCitationstudyurn:org.iodp:exp:314urnlargerWorkCitationcampaignurn:org.iodp:exp:316:site:C0004urnlargerWorkCitationstudyurn:org.iodp:exp:316urnlargerWorkCitationcampaignurn:org.iodp:exp:316:site:C0008urnlargerWorkCitationstudyurn:org.iodp:exp:316urnlargerWorkCitationcampaignEnglishgeoscientificInformation136.3800136.434033.080033.1300application/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1525-2027/homepage/G3_Special_Section_Proposal_Form.pdfdownload