Re: Scientists push back origins of Earth's oxygen

In article <HfmdnQy3JOD7WGLbRVn_vwA@xxxxxxxxxxxx>,
"Noelie S. Alito" <noelie@xxxxxxxxxxxx> wrote:

Walter Bushell wrote:
In article <1191153939.040024.62660@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
VoiceOfReason <papa_fox@xxxxxxxxxxxxx> wrote:

Some scientists have argued that the sudden evolution of organisms
that produce oxygen by photosynthesis caused the Great Oxidation
Event.

This is known as the first great die off.


Rocks absorbed the first bout of O2, forming iron oxides which
colored them red. This is known as the first great dye off.

I think that is known as a "topper".

.