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Progress in Earth and Planetary Science
Fig. 3 | Progress in Earth and Planetary Science

Fig. 3

From: Liquid and supercritical CO2 as an organic solvent in Hadean seafloor hydrothermal systems: implications for prebiotic chemical evolution

Fig. 3

A relationship between seafloor pressures of CO2-rich hydrothermal fields and phase relations in the CO2–H2O system (modified from Spycher et al. 2003). CO2-rich hydrothermal systems seem to host a L/SC-CO2 pool when seafloor pressures exceed the critical pressure of CO2-rich fluid. In contrast, Jan Mayen field in the Arctic Mid-Ocean Ridge (Pedersen et al. 2010; Stensland et al. 2019) and CO2-rich hydrothermal fields in the Mariana (except Champagne field) and Tonga-Kermadec arcs (Lupton et al. 2008) discharge CO2-rich fluids as gas bubbles (with/without CO2 hydrate). Q, a quadruple point; CEP, a critical end point for the CO2–H2O system

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