The Ups and Downs of Early Atmospheric Oxygen

[knocker]

Seems to be quite a bit of research in this area.

 

 

UC Riverside research team challenges conventional view of a simple two-step rise in early oxygen on Earth; study suggests instead dynamic oxygen concentrations that rose and fell over billions of years

 

http://ucrtoday.ucr.edu/20605

 

[Polar Maritime]

"No single factor is likely to be the whole story, and there is much more to be written in the tale. Lyons and coauthors, along with research groups from around world over, are focusing current efforts on the timing and drivers of oxygenation in the late Proterozoic"

 

And more to come by the look's of things, it's certainly an important time in Earth's history and could lead to many other questions.