Rise in seawater sulphate concentration associated with the Paleoproterozoic positive carbon isotope excursion: evidence from sulphate evaporites in the ∼2.2–2.1 Gyr shallow‐marine Lucknow Formation, South AfricaStefan Schröder, H.S. Van Niekerk, Harald Strauß et al.|Terra Nova|2008Cited by 135