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. 2012 Oct 22;109(45):18300-18305. doi: 10.1073/pnas.1120387109

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Fig. 1. — A generalized trend and available sulfate δ³⁴S values for the ca. 2.3–2.05-Ga time interval. Light-grey boxes are δ³⁴S values for sulfate evaporite (gypsum and anhydrite), and dark-grey boxes are data from this study. Note that values are essentially the same as those of coeval sulfate evaporites, suggesting that they record the seawater sulfur isotope composition. There is an antithetic relationship between carbonate δ¹³C and sulfate δ³⁴S values, which is particularly prominent on the falling limb of the Lomagundi carbon isotope excursion (SI Text for additional figure information).

Inline graphic — A generalized trend and available sulfate δ³⁴S values for the ca. 2.3–2.05-Ga time interval. Light-grey boxes are δ³⁴S values for sulfate evaporite (gypsum and anhydrite), and dark-grey boxes are data from this study. Note that values are essentially the same as those of coeval sulfate evaporites, suggesting that they record the seawater sulfur isotope composition. There is an antithetic relationship between carbonate δ¹³C and sulfate δ³⁴S values, which is particularly prominent on the falling limb of the Lomagundi carbon isotope excursion (SI Text for additional figure information).