Quote:
Originally Posted by GeoffC
you can't get much more limited than that !!!...
the ash cloud, though, will eventually spread around the globe before it gradually disperses (at least the Northern Hemisphere - but much will depend on the upper wind flows).
one big eruption in Iceland, in the past, dramatically affected Europe, and even affected North America!
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There was a really big one some 250 Million years ago
The Great Dying. The Siberian Traps and then 60 MYA - the Deccan Traps. Basically the earth opened and poured via a mantle plume and oozed out lava for a million years or so...