Figure F2. Carbon stable isotope (δ13C) records of dissolved inorganic carbon (DIC) from Sites U1305, U1306, and U1307. Also plotted are sulfate and methane concentration profiles measured on board during Expedition 303 (see the “Site U1305,” “Site U1306,” and “Site U1307” chapters). Light khaki bars = sulfate/methane interfaces inferred from the downhole chemical compositions at each site. The δ13C data are reported in Table T1. VPDB = Vienna Peedee belemnite standard.
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