Fig. 3 | Nature Communications

Fig. 3

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

Fig. 3

Constrained pH-ΣCO2 conditions (white area) in the pore water for mean water composition of the full-interaction scenario (Cumberland). The red line shows the stability boundary between carbonate and gypsum. The orange and sky-blue areas correspond to aragonite stable conditions and saponite unstable conditions, respectively. The broken lines show ΣCO2 concentrations for \(P_{{\rm{CO}}_{2}}\) assuming dissolution equilibrium. See Methods for calculation methodology

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