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Fig. 2 | Earth, Planets and Space

Fig. 2

From: New temperature and oxygen fugacity data of Martian nakhlite from Northwest Africa (NWA) 5790 and implications for shallow sulphur degassing

Fig. 2

a Closure temperature and fO2 (relative to QFM buffer) for NWA 5790 nakhlite titanomagnetite–ilmenite pairs in this study (red dots), compared to closure temperature and fO2 from titanomagnetite–ilmenite pairs in nakhlites from the literature (Boctor et al. 1976; Bunch and Reid 1975; Sautter et al. 2002; Szymanski et al. 2010; Treiman and Irving 2008). All closure temperatures and fO2 were recalculated using geothermometer and oxybarometer in Sauerzapf et al. (2008). Error bars for temperature and fO2 are ± 70 °C and ± 0.5log fO2 unit, respectively. b Total sulphur content vs. fO2 (expressed as ΔQFM) degassing simulations. c Pressure vs. fO2 (expressed as ΔQFM) degassing simulations. Degassing models calculated by D-Compress are in an open C–S–O–H system. For close-system degassing curves, see Additional file 1: Figure S3

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