Fig. 7: Biogeochemical model results comparing a reductant and P-driven GOE.
From: Marine phosphorus and atmospheric oxygen were coupled during the Great Oxidation Event
a Reductant-driven GOE and b P-driven GOE showing atmospheric O2 profiles over time. GOE interval demarked by grey shading. Note, in the P-driven GOE a fall in atmospheric O2 occurs after the initial rise in atmospheric O2. c carbon isotope value of dissolved inorganic carbon (δ13CDIC) in different modelled ocean regions (proximal, distal, deep) in a reductant-driven GOE and d) P-driven GOE. Grey shading reflects the interval of atmospheric O2 rise termed GOE.
