Before revision: Prior to the Canfield Ocean theory, it was believed that the ocean becoming fully oxygenated during the Great Oxygenation Event (GOE) (~2.46 Ga) was the mechanism that ceased BIF depositon.
After revision: Prior to the Canfield Ocean theory, it was believed that the ocean becoming fully oxygenated during the Great Oxidation Event (GOE) (~2.46 Ga) was the mechanism that ceased BIF depositon.