Figure 1: Summary of published data collected across the early Toarcian oceanic anoxic event. | Nature Communications

Figure 1: Summary of published data collected across the early Toarcian oceanic anoxic event.

From: Charcoal evidence that rising atmospheric oxygen terminated Early Jurassic ocean anoxia

Figure 1

(a) Carbonate carbon isotope profile from Peniche and the organic carbon isotope profile from Yorkshire illustrating the step-wise nature of the negative excursion, and postulated pulses of light carbon release from Kemp et al.25 Plotted alongside are the osmium isotope profile from Mochras and total organic carbon content from the Yorkshire section. (b) Handoh and Lenton’s12 hypothesized model changes in atmospheric oxygen and wildfire frequency across an oceanic anoxic event, with period of modelled peak oxygen and wildfire frequency highlighted.

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