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Re:Mass Extinction and the Structure of the Milky Way (2013) by flukus on Monday May 08, 2017 @04:19AM (#14290028)
> Could the volcanic activity be triggered by comets?

That's an interesting question. My completely unqualified opinion would be no, an comet couldn't trigger the massive and ongoing volcanic activity that a mass extinction requires. I'd like to hear from someone more informed though.

Re:Mass Extinction and the Structure of the Milky Way (2013) by cifvts on Monday May 08, 2017 @05:44AM (#14290303)
Could a big enough comet impact cause the Earth behave like a liquid and therefore a wave destabilize the crust and increase volcanic events?