IODP Proc, 311, Data report: stable isotope composition of authigenic carbonates from the northern Cascadia margin, IODP Expedition 311, Sites U1325-U1329

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Chapter contents Abstract Introduction Sampling and analytical methods Results Oxygen and carbon isotopic compositions of carbonates from all sites Oxygen and carbon isotopic distributions with depth Summary Acknowledgments References Figures F1. Location maps. F2. Oxygen and carbon isotopic compositions. F3. δ¹⁸O and δ¹³C values, Site U1326. F4. δ¹⁸O and δ¹³C values, Site U1327. F5. δ¹⁸O and δ¹³C values, Site U1328. F6. δ¹⁸O and δ¹³C values, Site U1329. Table T1. Total carbonate content, mineralogy, and oxygen and carbon isotopic compositions. PDF file		Previous \| Next doi:10.2204/iodp.proc.311.210.2009 Data report: stable isotope composition of authigenic carbonates from the northern Cascadia margin, IODP Expedition 311, Sites U1325–U1329¹ Catherine Pierre,² Marie-Madeleine Blanc-Valleron,³ Jean-Marie Rouchy,³ and Danièle Bartier³ Abstract This report presents the oxygen and carbon stable isotope data obtained on selected authigenic carbonate occurrences from the sediments recovered from five Integrated Ocean Drilling Program sites (U1325–U1329) across the accretionary prism offshore Vancouver Island, where the base of gas hydrate stability zone lies between 124 and 260 meters below seafloor. The two main objectives of this study were to determine if there exists a difference of isotopic compositions between the different sites and to characterize the isotopic signals that might be associated with the presence of gas hydrate at depth. ¹Pierre, C., Blanc-Valleron, M.-M., Rouchy, J.-M., and Bartier, D., 2009. Data report: stable isotope composition of authigenic carbonates from the northern Cascadia margin, IODP Expedition 311, Sites U1325–U1329. In Riedel, M., Collett, T.S., Malone, M.J., and the Expedition 311 Scientists, Proc. IODP, 311: Washington, DC (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.311.210.2009 ²Université Pierre et Marie Curie, LOCEAN, (UMR 7159), 4 place Jussieu, 75252 Paris Cedex 05, France. catherine.pierre@locean-ipsl.upmc.fr ³UMR 5143 CNRS, Département Histoire de la Terre-Géologie, Muséum National d'Histoire Naturelle (MNHN), 43 rue Buffon, 75005 Paris, France. Initial receipt: 26 June 2008 Acceptance: 4 December 2008 Publication: 5 May 2009 MS 311-210 Top of page \| Previous \| Next