Table 2

Sulfate reduction per subsurface cell at representative sites (27). n/a indicates that there is no discernible subsurface methane oxidation zone at the site.

LocationMean SO42−reduction per cell in CH4-depleted SO42−-rich zone (mol cell−1year−1)Mean SO42−reduction per cell in anaerobic methane oxidation zone (mol cell−1 year−1)
Ocean-margin sites
798B (Japan Sea)3.1 (±1.3) × 10−17 2.6 (±1.1) × 10−16
681C (Peru Margin)1.4 (±0.6) × 10−19 6.4 (±2.7) × 10−18
1175 (Nankai Trough)3.3 (±1.4) × 10−15 7.5 (±3.8) × 10−15
Open-ocean sites
851 (Equatorial Pacific)1.2 (±1.1) × 10−19 n/a
834 (Lau Basin)1.5 (±1.7) × 10−20 n/a
1149 (Izu-Bonin Trench)9.5 (±5.8) × 10−20 n/a