Figure 11. Site 1005 depth profiles illustrating altenations between sulfate-reducing (shaded) and non-sulfate-reducing zones. Interfaces between these zones are important sites of dissolution/precipitation reactions. A. SO42- and Sr2+. B. Methane (C1) measured in headspace and interstitial dissolved inorganic carbon (DIC) d13C. C. Ion molar product (IMP) for celestite (SrSO4) and interval (indicated by arrows) where significant quantities of celestite were found in cores.

Figure 11. Site 1005 depth profiles illustrating altenations between sulfate-reducing (shaded) and non-sulfate-reducing zones. Interfaces between these zones are important sites of dissolution/precipitation reactions. A. SO₄^2- and Sr²⁺. B. Methane (C₁) measured in headspace and interstitial dissolved inorganic carbon (DIC) ¹³C. C. Ion molar product (IMP) for celestite (SrSO₄) and interval (indicated by arrows) where significant quantities of celestite were found in cores.