Cyanobacteria in the ocean was significant by 3.8 by ago, and this started the oxidation of iron there and raised the eH. This led to the formation of banded iron formations. Later, oxygen built up in earth’s atmosphere.
Cyanobacteria in the ocean was significant by 3.8 by ago, and this started the oxidation of iron there and raised the eH. This led to the formation of banded iron formations. Later, oxygen built up in earth’s atmosphere.
