Fig. 6: Sulphur isotope data for core RKB 5260.

a Sulphur isotopic composition of CRS (δ³⁴S_CRS) and hand-picked pyrite tubes (δ³⁴S_Pyrite) in bulk sediments and in-situ pyrite SIMS δ³⁴S_SIMS. b Distribution pattern of δ³⁴S_SIMS variation of each pyrite aggregate from different depths.