Reexamination of 2.5-Ga “whiff” of oxygen interval points to anoxic ocean before GOE

Authors: Sarah P. Slotznick, Jena E. Johnson, Birger Rasmussen, Timothy D. Raub, Samuel M. Webb, Jian-Wei Zi, Joseph L. Kirschvink, Woodward W. Fischer

Published: 2022-01-05

DOI: 10.1126/sciadv.abj7190

Source: Full article

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Abstract

New microscale observations show chemical signals for transient oxygen at 2.5 billion years ago formed after deposition.