Fig. 5

Oxygen, carbon cycle and strontium isotope outputs. Monte-Carlo experiments running the COPSE model for the Ediacaran period. Degassing rates are sampled from the error window of Mills et al. (2017)³⁷, uplift rates increase linearly from 0.5 to 2 times present day. Values for the key model parameters controlling atmospheric oxygen are chosen for each run from the ranges shown in Table 1. Light shaded windows show ± 1 std. dev, dark shaded windows show ± 0.5 std. dev. Geologic data in purple^45,67. a Carbon burial rates. b CO₂ (PAL), c O₂ (PAL), d f_org, e δ¹³C_carb, f ⁸⁷Sr/⁸⁶Sr