Earth’s Oceans Were Slowly Suffocating Millions of Years Before a Devastating Mass Extinction
2 Articles
2 Articles
Earth’s Oceans Were Slowly Suffocating Millions of Years Before a Devastating Mass Extinction
As today’s oceans lose oxygen, Alaskan rocks trace a similar decline that began millions of years before the end-Triassic mass extinction. Dinosaurs survived the end-Triassic mass extinction 201 million years ago, but roughly 60 percent of Earth’s species did not. New evidence from Virginia Tech geologists suggests that the crisis in the oceans began about [...]
About 201 million years ago, the Triassic ended with a mass extinction. In a part of the then Panthalassa ocean, however, the oxygen supply apparently deteriorated about eight million years earlier, as rock analyses from Alaska show. The creeping change could have put marine ecosystems under pressure long before the actual catastrophe. Blacksburg (U.S.A.). At the transition of [...] The post Urmeer Panthalassa lost its oxygen long before the mas…
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