New Oxygen research; from rocks, higher earlier (Introduction)

by David Turell , Monday, August 29, 2016, 00:41 (3008 days ago) @ dhw


> dhw; However, this is all very minor. Even if an increase in oxygen did trigger the explosion, it still doesn't explain how organisms managed to respond with all their innovations. So we still have our mystery. - That is the point I made. Salt is salt and comes from oceans. High O2 at the 10+% level was around for 300 million years and finally the Cambrians appeared. The O2 in salt is ocean O2.