may 11, 935148584 BC - Atmosphere becomes oxygenated: 2.50 bya
Description:
-This idea is debatable/unknown, many scientist have differing thoughts on how oxygen originated
-The conventional theory of how oxygen accumulated in the atmosphere focused on the burial of organic matter in seafloor sediments that later hardened into rock.
-When these microbes die, their remains become buried in seafloor sediment. Their decomposition removes oxygen from seawater, and in turn, from the atmosphere.
-Then organic material is buried, oxygen becomes available to build up in the atmosphere.
Added to timeline:
Global Time Scale
Date:
