The emergence of life from iron monosulphide bubbles at a submarine hydrothermal redox and pH front

  title={The emergence of life from iron monosulphide bubbles at a submarine hydrothermal redox and pH front},
  author={Michael J. Russell and Allan J. Hall},
  journal={Journal of the Geological Society},
  pages={377 - 402}
Here we argue that life emerged on Earth from a redox and pH front at c. 4.2 Ga. This front occurred where hot (c. 150°C), extremely reduced, alkaline, bisulphide-bearing, submarine seepage waters interfaced with the acid, warm (c. 90°C), iron-bearing Hadean ocean. The low pH of the ocean was imparted by the ten bars of CO2 considered to dominate the Hadean atmosphere/hydrosphere. Disequilibrium between the two solutions was maintained by the spontaneous precipitation of a colloidal FeS… 

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