The 'White River Ash' is a 2,000 year old
ash deposit. It was formed by two large (
VEI 6)
explosive eruptions from the
stratovolcano of
Mount Churchill that blanketed 340,000 km
2 of the
Yukon and
Northwest Territories,
Canada with ash.
[1]
References
1. Evidence for winter eruption of the White River Ash (eastern lobe), Yukon Territory Retrieved on 2007-07-09