Sulfur-isotope and redox records support a prolonged oxygenation transition; U–Pb baddeleyite ages place its onset between about 2,460 and 2,426 Ma rather than at one instantaneous boundary.
claim:event:great-oxidationTiming and tempo of the Great Oxidation Event
Gumsley, A.P.; Chamberlain, K.R.; Bleeker, W.; Söderlund, U.; de Kock, M.O.; Larsson, E.R.; Bekker, A.
Year2017
Source roleprimary-study
DOI / ID10.1073/pnas.1608824114
Fitness and scope
geochronology · range · event-mechanism · methods
U–Pb baddeleyite geochronology brackets the onset of the Great Oxidation Event; the dated intrusions and proxy transition are not the same observation.