Science Advances

Supplementary Materials

This PDF file includes:

  • Geological background
  • Potential of sulfur MIF signals originated from weathering of preexisting S-MIF
  • Sensitivity analysis of C-O-S biogeochemical cycling model
  • fig. S1. Simplified geological map of the Transvaal Supergroup in the Transvaal and Griqualand West basins, Kaapvaal Craton, South Africa.
  • fig. S2. Representative transmitted light photomicrographs showing pyrite (opaque particles) distribution patterns in the samples analyzed in this study.
  • fig. S3. Cartoon figure showing the C-S-O geochemical model used in this study.
  • fig. S4. Sensitivity analysis for the power coefficient (θ) of pyrite burial and pO2.
  • fig. S5. Sensitivity analysis for the coefficient (γ) of weathering of sulfide and pO2.
  • table S1. Multiple sulfur isotope composition of the pyrite analyzed in this study.
  • table S2. Parameters used for the Archean-Proterozoic oxygen-methane-sulfur cycle model.
  • References (75–81)

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