The Emergence of Life from Iron Monosulphide Bubbles at a Submarine Hydrothermal Redox and pH Front
Russell, M. J., Hall, A. J., Journal of the Geological Society
Abstract: 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 deg C), extremely reduced, alkaline, bisulphide-bearing, submarine seepage waters interfaced with the acid. warm (c. 90 deg C), iron-bearing Hadean ocean. The low pH of the ocean was imparted by the ten bars of CO ^ sub 2^ considered to dominate the Hadean atmosphere/hydrosphere. Disequilibrium between the two solutions was maintained by the spontaneous precipitation of a colloidal FeS membrane. Iron monosulphide bubbles comprising this membrane were inflated by the hydrothermal solution upon sulphide mounds at the seepage sites. Our hypothesis is that the FeS …
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Publication information: Article title: The Emergence of Life from Iron Monosulphide Bubbles at a Submarine Hydrothermal Redox and pH Front. Contributors: Russell, M. J. - Author, Hall, A. J. - Author. Journal title: Journal of the Geological Society. Volume: 154. Publication date: May 1997. Page number: 377+. © Geological Society Publishing House Jan 2009. Provided by ProQuest LLC. All Rights Reserved.
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