Fig. 2: Model input parameters.
From: Crustal carbonate build-up as a driver for Earth’s oxygenation

a, The degassing rate22. b, Exposed landmass, relative to present26. c, Biological weathering enhancement52. d, Crustal carbon reservoir, relative to present38,39. The red and blue colours are used to highlight the difference between previously studied and newly studied parameters, respectively. The darker lines show the mean values, and the shaded areas show assumed ranges. Paleoarc., Paleoarchean; Mesoarc., Mesoarchean; Neoarc., Neoarchean; Neoprot., Neoproterozoic; Paleo., Paleozoic; Meso., Mesozoic; C., Cenozoic.