georefid:2007-087740georefid:2007-087735SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.sr.208.202.2006<gco:CharacterString>Data report; stable carbon isotope fluctuation of long-chain n-alkanes from Leg 208 Hole 1263A across the Paleocene/Eocene boundary</gco:CharacterString>2007-01-01publicationgeorefid:2007-087740doi:10.2973/odp.proc.sr.208.202.2006Hasegawa, TakashiKanazawa University, Graduate School of Natural Science and Technology, Department of Earth Sciences, Kanazawa, JapanauthorYamamoto, ShinyaUniversity of California, Santa Cruz, United StatesauthorPratt, Lisa M.Ocean Drilling Program, United StatesauthorTexas A&M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: Kroon, Dick, Zachos, James C., Blum, Peter, Bowles, Julie, Gaillot, Philippe, Hasegawa, Takashi, Hathorne, Edmund C., Hodell, David A., Kelly, Daniel C., Jung, Ja-Hun, Keller, Susan M., Lee, Youn Soo, Leuschner, Dirk C., Liu Zhifei, Lohmann, Kyger C., Lourens, Lucas, Monechi, Simonetta, Nicolo, Micah, Raffi, Isabella, Riesselman, Christina, Roehl, Ursula, Schellenberg, Stephen A., Schmidt, Daniela, Sluijs, Appy, Thomas, Deborah, Thomas, Ellen, Vallius, Henry, Proceedings of the Ocean Drilling Program; scientific results; early Cenozoic extreme climates; the Walvis Ridge Transect; covering Leg 208 of the cruises of the drilling vessel JOIDES Resolution; Rio de Janeiro, Brazil, to Rio de Janeiro, Brazil; Sites 1262-1267; 6 March-6 May 2003208Carbon isotope ratios of terrestrial biomarkers extracted from Ocean Drilling Program Hole 1263A show a prominent negative excursion across the Paleocene/Eocene boundary. The isotope profiles of the normal alkanes nonacosane (n-C29), hentriacontane (n-C31), and tritriacontane (n-C33), the first such profiles generated with samples from a pelagic section, are similar to those of carbonate carbon, though the magnitude of the excursion is larger, roughly 4 per mil-5 per mil. In addition, the n-alkane records show an inflection at 334.70 meters composite depth, which is roughly equivalent to where the inflection occurs in the carbonate record. These results suggest that the terrestrial compounds are directly recording changes in atmospheric carbon delta (super 13) C and that the actual excursion may have been larger than that recorded by marine carbonates.completedStratigraphyIsotope geochemistryaliphatic hydrocarbonsalkanesAtlantic OceanbiomarkersboreholesC-13/C-12carboncarbon dioxideCenozoicchemostratigraphycoresEocenegas chromatogramsgeochemistryhydrocarbonsisotope ratiosisotopesLeg 208marine sedimentsn-alkanesOcean Drilling ProgramODP Site 1263organic compoundspaleo-oceanographyPaleocenepaleoclimatologyPaleogenesedimentsSouth AtlanticSoutheast Atlanticstable isotopesstratigraphic boundaryTertiaryWalvis Ridgeurn:org.iodp:exp:208urnlargerWorkCitationcampaignurn:org.iodp:exp:208:site:1263urnlargerWorkCitationstudyurn:org.iodp:exp:208urnlargerWorkCitationcampaignEnglishgeoscientificInformation2.47002.4700-28.3200-28.3200Includes appendicesapplication/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www-odp.tamu.edu/publications/208_SR/VOLUME/CHAPTERS/202.PDFdownload