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-oxidationGreat Oxidation interval
Atmospheric and oceanic oxygen rose in a prolonged transformation that changed planetary chemistry and the selective environment for life.
Represented range2450–2050 Ma
RegionsGlobal
CladesBacteria · Archaea · early eukaryotic lineages
Claim ledger
References
- Timing and tempo of the Great Oxidation EventGumsley, A.P.; Chamberlain, K.R.; Bleeker, W.; Söderlund, U.; de Kock, M.O.; Larsson, E.R.; Bekker, A. · 2017 · DOI 10.1073/pnas.1608824114
- The rise of oxygen in Earth's early ocean and atmosphereLyons, T.W.; Reinhard, C.T.; Planavsky, N.J. · 2014 · DOI 10.1038/nature13068