E. Chi-Fru

Marine arsenate evolution during Proterozoic oxygenation events and implications for biological phosphate metabolism

Earth’s atmosphere and oceans experienced two major episodes of ocean-atmosphere oxygenation that transformed the planet and shaped the evolution of the oxygen-rich biosphere between 2.45 and 0.541 billion years ago (Ga). These changes increased the abundance of oxidized chemicals in seawater, but their distribution...