Ultimately, he found that, while volcanic eruptions would have spewed huge quantities of both sulfur dioxide and hydrogen sulfide into the atmosphere, it was the former that dissolved more easily in shallow waters, producing large concentrations of sulfidic anions, in the form of sulfites and bisulfites. (sciencedaily.com)
«Prior to this work, people had no idea what levels of sulfidic anions were present in natural waters on early Earth; now we know what they were,» Ranjan says. (sciencedaily.com)
Evolution in extreme environments: replicated phenotypic differentiation in livebearing fish inhabiting sulfidic springs. (k-state.edu)