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Figure F2. Downcore distributions of δ13CDIC along transect drilled during IODP Expedition 311 showing enrichment of isotope values of residual CO2, (A) Site U1325, (B) ODP Leg 204 Site 1245, (C) Site U1327, and (D) Site U1329. ODP Site 1245 is included for completeness (data from Torres and Rugh, 2006). E. Progressive enrichment in 13C with distance from the deformation front reflecting preferential consumption of 12C by methanogens, which leads to a progressively heavier residual pool. Site locations shown in Figure F1. DIC = dissolved inorganic carbon. PDB = Peedee belemnite.
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