Missing Oxygen

Why Did Earth’s Oxygenation Take So Long?

Published in The EarthSphere Blog

Before the Oxygen (by WM House; ArcheanArt)

Prologue

Previously in the Forgotten Origins series of articles, we discussed banded iron formations. The history of these formations tracks the development of Earths’ oxygen and raises questions about the 1.4 billion years between the first hints of free oxygen and the Great…