Clint Scott, Boswell A Wing, Andrey Bekker, Noah J Planavsky, Pavel Medvedev, Steven M Bates, Misuk Yun, Timothy W Lyons

2014/3/1

Earth and Planetary Science Letters

389

95-104

Elsevier

Abstract Earthʼs oxygenation is often described in terms of two unidirectional steps at the
beginning and end of the Proterozoic Eon, separated by a long-lived intermediate redox
state. Recent work defines a more complicated path to oxygenation, exemplified by an
apparent drop in oxidation state following the early Paleoproterozoic Lomagundi carbon
isotope excursion. The timing of this proposed drop in oxidation state is not well constrained,
and it is not clear how it relates to redox conditions during the remainder of the Proterozoic ...