georefid:1999-010423SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=1999-0104231998-01-01publicationgeorefid:1999-010423Morris, Ron MerrittCalifornia State University at Long Beach, Long Beach, CA, United StatesauthorBehl, Richard J.authorAmerican Association of Petroleum Geologists and Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United StatespublisherdocumentHardcopyIn: Anonymous, American Association of Petroleum Geologists 1998 annual meeting1998CAT-scans were taken of the recovered 96% of the 25.5 m core at 5 cm increments, revealing a series of ichnofabric "snapshots" spaced at <300 year intervals. Digital image analysis was used to quantify ellipticity and size trends in the bedding parallel ichnofabrics. Our model proposes that as porewater oxygenation increases, mean burrow orientations shift to become increasingly vertical. Alternately, as dissolved O (sub 2) levels decline, the habitable zone of oxygenation is compressed toward the sediment-water interface; organisms are restricted to less vertical burrow orientations on average, resulting in higher ellipticities in cross-section.completedQuaternary geologybeddingbiogenic structuresbioturbationburrowsCaliforniaCenozoicclimate changecontinental slopecoresEast Pacificglobal changeichnofabricLeg 146Leg 167marine sedimentsNorth PacificNortheast PacificOcean Drilling ProgramODP Site 1017ODP Site 893orientationPacific Oceanpaleo-oceanographypaleoclimatologypaleotemperatureplanar bedding structuresPoint ConceptionQuaternarySanta Barbara BasinSanta Barbara County Californiasediment-water interfacesedimentary structuressedimentstomographyUnited StatesX-ray dataurn:org.iodp:exp:146urnlargerWorkCitationcampaignurn:org.iodp:exp:167urnlargerWorkCitationcampaignurn:org.iodp:exp:167:site:1017urnlargerWorkCitationstudyurn:org.iodp:exp:167urnlargerWorkCitationcampaignurn:org.iodp:exp:146:site:893urnlargerWorkCitationstudyurn:org.iodp:exp:146urnlargerWorkCitationcampaignEnglishgeoscientificInformation-120.0212-120.021134.171534.1715