Table 4.
Sulfur isotope fractionations by reaction type and salinity conditions in this study and previous studies
| Location | Sediment Type | Isotope Fractionation Enrichment Factor, 34ε (‰) | References |
|---|---|---|---|
| Sulfate reduction coupled with anaerobic organic matter oxidation | |||
| Hypersaline condition | |||
| Solar Lake, Egypt | Microbial mats | 20 | (1) |
| Mono Lake, California | Basaltic sediment | 5–21, mean value 12 | (2) |
| Flow-through reactor | Brackish estuarine sediments, 20 °C | Mean value 17 | (3) |
| Sea water salinity | |||
| Gulf of Mexico | Oil seeps | 18 | (4) |
| Sulfate reduction coupled with anaerobic methane oxidation | |||
| Seawater salinity | |||
| Gulf of Mexico | Gas seeps | 8.6 | (4) |
| Hypersaline condition | |||
| DS basin | Alluvial sediment | 17 ± 3.5 | (5) |
(1) Habicht & Canfield, 1997; (2) Stam et al. (2010); (3) Stam et al. (2011); (4) Aharon & Fu, 2000; (5) this study.