Fig. 1: Representation of the experimental system reproducing the interface between an acidic iron-rich solution and a basic solution.
From: Fe2+ disproportionation within iron-rich alkaline vent analogues reveals proto-bioenergetic systems
A Schematic representation of an early Earth alkaline hydrothermal vents (AHV) formed at the interface of an alkaline-reduced fluid (in orange) and of the acidic-oxidized seawater (in blue). B Experimental setup to reproduce a simplified analog of an AHV chimney wall formed in a pH gradient, at the interface of a basic solution (in orange, pH 14) and of an iron-rich acidic solution (in blue, pH 2).
