Fig. 5From: Hydrogen-rich hydrothermal environments in the Hadean ocean inferred from serpentinization of komatiites at 300 °C and 500 barChanges in H2 concentration during the experiments with olivine, Al2O3-5 % and Al2O3-10 % komatiites. The arrow indicates the maximum background H2 concentration after c. 2000 hBack to article page