White River Ash
The White River Ash is a 1,200-year-old ash deposit. It was formed by two large (VEI 6) explosive eruptions from the stratovolcano of Mount Churchill that blanketed 340,000 km2 (130,000 sq mi) of Yukon and Northwest Territories, Canada and the U.S. state of Alaska with ash.
- West, K.D.; Donaldson, J.D. (2000). "Evidence for winter eruption of the White River Ash (eastern lobe), Yukon Territory". CGRG Bibliography of Canadian Geomorphology. The Canadian Geomorphology Research Group. Archived from the original on 2009-04-08. Retrieved 2007-07-09.
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