The explanation in this article for the increased ocean-surface temperature seemed to focus solely on atmospheric effects. I wonder if variations in undersea volcanism might have contributed to the sudden spike in Pacific Ocean surface temperatures during the Aptian epoch of the Cretaceous period. If so, then a moderately higher release of volcanic ash might have contributed to the sudden drop in ocean-surface temperatures.

Darryle Vaught
Selmer, Tenn.

From the Nature Index

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