Fig. 5.

δ³⁴S and Δ³³S profiles of sulphides in drill core T2 and associated δ³⁴S-Δ³³S and Δ³³S-Δ³⁶S compositional diagrams. Red dots, bulk analysis; white dots, mean value of in situ analysis for each sample; grey dots, individual point analysis using the SHRIMP-SI (error bars are standard deviation of 1σ, see Methods). The grey shaded areas in the δ³⁴S and Δ³³S profiles represent the range of individual point analysis for each sample. ARA, Archaean Reference Array, MDF, mass-dependent fractionation of sulphur isotopes. Sulphide Re-Os date of 2312.7 ± 5.6 Ma is from this study. Zircon U-Pb date of 2340 ± 22 Ma is from Caquineau et al.²⁹. The black and blue stars adjacent to the lithologic column correspond to the samples used for Re-Os (blue) and U-Pb (black) dating