Mt St Helens is known to be active since 35,000 years ago – at best it was dormant before the 1980 eruption…The volcanoes of British Columbia have a different origin (continental rifting vs subdubtiing ocean plates) than Mt St Helens and only three of the hundred or so volcanoes have been active in the last 360 years, so they are probably safe (many of them only had one eruption). However, since the source of the volcanism is still active in British Columbia, there is a risk of new volcanoes appearing…Happy nightmares! J) (I live in Southern California and get to deal with earthquake fears – last week we had a 4.4 magnitude quake, no biggie. However, that quake had a 5% chance of being a foreshock for the “Big One” in the first hour after the quake and I spent a few nervous minutes watching my hanging lamps for signs of a larger quake starting….)
Recent Comments