guzzi-ga is on the ball.
The theory (Carbon burial theory), as initially the Earth was covered
with water, of organic matter (located on the ocean floor being
processed by cyanobacteria (blue and green algae)via photosynthesis is
thought to be the first step.The biosynthesis of organic carbon, via
enzymatic pathways, with O2 a byproduct.B SO:---->Microbes/Bacteria
die, O2 released, blah blah blah . One can, and has meaasured the
amount of residual carbon located on the ocean floor. If initially the
O2 level was < 4%, one may conclude that the increase mortality of
cyano bacteria, release of O2 and thus an increase in elemental Carbon
on the Ocean Floor. NOT THE CASE.Carbon was noted to be constant in
the Carbon Burial Theory.
The other theory suggests O2 binding with multivalent elements-forming
oxygen rich sediments....settles to the ocean floor, process through
settlement, on to the mantle, volcano erupts...here is important part:
hydrogen and O2 could have formed H2O but it dod not (due to temp
bnding affinity etc H into the upper atmospohere and O2 into the lower
atmospohere...over time the amount of o2 increased to 21%.
Ciao |
