Table 1 Estimated solution compositions of pore water that finally interacted with sediments at John Klein and Cumberland for (a) full-interaction scenario and (b) no-interaction scenario

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

  Full-interaction scenario No-interaction scenario
  John Klein Cumberland John Klein Cumberland
Na (mol/kg) 0.085–0.24 0.094–0.12 0.038–0.42 0.033–0.13
K (mol/kg) 0.0025–0.018 0.0014–0.0044 0.0011–0.030 0.00047–0.0044
Mg (mol/kg) 0.0046–0.11 0.035–0.060 0.00064–0.21 0.0034–0.065
Ca (mol/kg) 0.022–0.12 0.024–0.045 <0.119 <0.048
Cl (mol/kg) 0.072–0.59 0.11–0.25 0.05–1.3 0.05–0.34
SO4 (mol/kg) 0.025–0.14 0.044–0.072 N/A N/A
ΣCO2 (mol/kg) 0.0019–0.041 0.0023–0.016 N/A N/A
Fe(II) (mol/kg) 0.00024–0.038 0.00012–0.0058 0.00044–0.19 0.00011–0.013
pH 6.7–7.3 6.9–7.3 6.5–8.3 6.8–8.1
\(P_{{\rm{CO}}_{2}}\) (mbar) 6–130 6–40 N/A N/A
  1. The temperature is assumed to be 0 °C. Na, K, Mg, Ca, Cl, SO4, Cl, ΣCO2, Fe represent the total dissolved components of sodium, potassium, magnesium, calcium, chlorine, sulfate, dissolved inorganic carbon and iron, respectively