Figure 4. Calculated spatial distribution of several parameters after 10 m.y. of thermochemical sulfate reduction for scenario 1–reference. CH4(aq) = aqueous methane; S(−II)(tot, aq) concentration = total concentration of aqueous reduced sulfur in the redox state of −II; S0(s) = elemental sulfur; Sulfate(tot) concentration = total concentration of sulfate.