Mass Extinctions - A Threat From Outer Space Or Our Own Planet's Detox?

University Of Leicester ^ | 3-9-2006 | Andy Sanders

[blam]

"Imaging how much steam would be generated as a ocean tried to pour into a 120 mile wide white hot crater."

I've read that it came in from the south southeast on a 35 degree angle.

[WoofDog123]

is there any non-extraterrestrial geological explanation for the siberian traps forming? given their size and general temporal proximity to one of the extinction events (the worst one, i think) it is hard to wonder what would crack the crust and allow those formations to develop.