Paleonet: O2 levels

Jorge A. Santiago-Blay blayjorge at
Wed Jan 25 03:04:31 GMT 2017

O2 levels

Dear Paleonetters:

A colleague sent me a paleoclimatology query recently, as follows:

"All the fuss over 395 ppm or 398 ppm CO2, but not a word about what
happens to O2 and its increase or decline. If late K O2 was 30-34%, where
did it all go and is anyone looking at O2 over the last 10 MY for example
ad obviously if O2 drops to 15-18% what happens. Just wondering."

Any illumination welcomed directly to blayjorge at

Apologies for potential duplicate emails.



Jorge A. Santiago-Blay, PhD

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