The Great Oxygenation Event

Below is the details of 'The Great Oxygenation Event'.

 

The Great Oxygenation Event 2400 mya

The atmosphere became oxidised for the first time (O2 rose to ~1 to 10 % of modern levels). Photosynthetic bacteria pumped O2 into the atmosphere,~300 million years after the first appearance a change in the sinks of O2 out of the atmosphere (e.g. volcanic outgassing,organic carbon burial and/or methane oxidation) allowed O2 to build up.
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Keywords: evolving_earth, climate