Fig. 7From: Hydrogen-rich hydrothermal environments in the Hadean ocean inferred from serpentinization of komatiites at 300 °C and 500 barRelationships between fluid H2 concentration during serpentinization and Al2O3 content in the starting solid material. For comparison, the results of the lherzolite experiment at 200 °C (Seyfried et al. 2007) and the experiments with Ol, Opx, and/or Cpx at 400 °C (Allen and Seyfried 2003) are also shownBack to article page