Volcanism drove rapid ocean deoxygenation during the time of the dinosaurs

ScienceDaily
Aug 23, 2021, 12:58 pm91 pts
Ocean deoxygenation during the Mesozoic Era was much more rapid than previous thought, with CO2 induced environmental warming creating ocean 'dead zones' over timescales of only tens of thousands of years. The research paints a new picture of severe ocean deoxygenation events in our planet's geologic history.

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