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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