Re: Just add water
"So my question is, (given that these folks are correct, and I realize that's far from certain) does anyone think there might be enough get up and go left in the Tharsis volcanoes, (or in Mars itself, meaning basically magma) to power one of these auto-terra-forming events?"
It's possible- not likely though. What would make it happen say somewhere in the next 10,000 years in comparison to what has happened in last say 100,000 years. Feeling lucky?
Personally I think recent (last few hundred million years) volcanic events were trigger (or were directly resulted) from impactors.