Figure 3: Model results in three 1,000ln(34α) versus 33β−exponents diagrams. | Nature Communications

Figure 3: Model results in three 1,000ln(34α) versus 33β−exponents diagrams.

From: Multiple sulfur isotope evidence for massive oceanic sulfate depletion in the aftermath of Snowball Earth

Figure 3

The results show the combinations of 33β, 34α and Fin/Fout that fit our data in 1,000ln(34α) versus 33β−exponents diagrams. (a) illustrates the δ34SCAS-range (that is, δ34SCASfinal−δ34SCASinitial) compatible with our data. The curve #2 delimitates the field below which the difference between δ34SCASfinal and δ34SCASinitial values (+38‰ and +12‰, respectively) is too low (that is, δ34SCASfinal−δ34SCASinitial<26‰) to account for the high δ34SCAS-values measured in our section. (b) illustrates the Fin/Fout-ratios that fit the observed δ34SCAS versus Δ33SCAS slope for each pair of 33β, 34α. The white curve #3 highlights the steady-state conditions, where Fin=Fout. (c) represents the combinations of 33β and 34α compatible with our data for different 36β values. The intercept between the modelled space of solution and results from BSR experiments allows restricting further the space of solution. The grey polygon represents the final solution space.

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