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Fraser
2019-Feb-25, 11:40 PM
Everyone knows an asteroid strike wiped out the dinosaurs, right? Lots of evidence shows that the Chicxulub impact event had terrible consequences for the dinosaurs. But the picture is a little more complicated than that. Extreme volcanic activity may have contributed to the extinction. At the end of the Cretaceous period, about 66 million years …
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Roger E. Moore
2019-Feb-26, 01:05 PM
I read about this several months ago in The Ends of the World: Volcanic Apocalypses, Lethal Oceans, and Our Quest to Understand Earth's Past Mass Extinctions, by Peter Brannen. Great book. The Chicxulub impact is thought to have fired up the Deccan Traps eruptions, so they would have happened as a one-two punch, with the Deccan Traps being the worst.

geonuc
2019-Feb-26, 04:38 PM
I feel like this could have been posted twenty years ago. I know, there's a new study out with increased precision of timing but still, the notion that flood basalts were a major contributor to dinosaurian demise through rapid climate change is not new.


This is not the first time that the traps have been implicated in the K-Pg extinction. But the precision in this new study drives the point home.

Statements like this drive my point home:


Everyone has heard that the dinosaurs died from an asteroid hitting the Earth,” said Schoene, an associate professor of geosciences. “What many people don’t realize is that there have been many other mass extinctions in the last 500 million years, and many of them coincide with large volcanic outpourings” from the massive volcanoes known as flood basalts or large igneous provinces.

No, not *everyone*. In fact, I'd say the consensus has long been that asteroid impact was not the only contributor.