The overall goal of this experimental approach is to simulate a ferruginous upwelling system and to detect geochemical profiles of oxygen and aqueous iron in the water column when cyanobacteria were present and produces oxygen by photosynthesis. T
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We simulated a Precambrian ferruginous marine upwelling system in a lab-scale vertical flow-through column. The goal was to understand how geochemical profiles of O2 and Fe(II) evolve as cyanobacteria produce O2. The results show the establishment of a chemocline due to Fe(II) oxidation by photosynthetically produced O2.