Fig. 4 | Nature Communications

Fig. 4

From: Semiarid climate and hyposaline lake on early Mars inferred from reconstructed water chemistry at Gale

Fig. 4

Eh-pH diagram of relevant iron species for the pore-water composition of the full-interaction scenario (a) and the no-interaction scenario (b) at 0 °C and 1 atm assuming equilibrium with albite and amorphous silica. The mean water composition at Cumberland are used for the full-interaction scenario, whereas the upper limits of the concentrations are used for the no-interaction scenario

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