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Several 18O measurements have no matching 34S result. This is caused by the different linearity response of the elemental analyzer/mass spectrometer combination when measuring CO versus SO2 gas. We were generally able to obtain a linear response for CO with signal sizes to 1 V, whereas linear SO2 measurements were only obtained with signals >2 V. We therefore excluded all 34S values where the signal was <2 V.
Hole U1325B yielded results to 5.15 meters below seafloor (mbsf), whereas shipboard data indicate that sulfate was consumed at 2.15 mbsf. I suspect that this was caused by mislabeling samples from Hole U1325D, where sulfate depletion does not occur above 4–5 mbsf. However, we list the results here as recorded in the Integrated Ocean Drilling Program (IODP) database. The data are reported in Tables T1, T2, T3, T4, and T5 and shown in Figures F1, F2, F3, F4, F5, and F6.