Quote:
Originally Posted by cran
thanks for the link, Grant, though when I last studied it (the subject, not this paper), the O2 low point was in the Triassic, ~100Myr ealier ...
oh yes - it's in the abstract:
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GEOCARBSULF's low (that 12% I mentioned) is actually in the early Jurassic. I garbled the timing in my previous post, by somehow mentally conflating the Jurassic and Cretaceous
I'm not doing well today.
Oxygen oscillates around ~18% during the Cretaceous.
Grant Hutchison