Can you tell me about the history of Mt. St. Helens before it erupted in
1980? A quick answer would help me with the report I'm writing for school.
Canida
Granillo
Candida,
According to "Volcanoes of the World" by Tom Simkin and others
(1981), Mt. St. Helens erupted 23 times prior to 1831, based on
charcoal dates. After that (and before the 1980 eruption) it
erupted in1831, 1835, 1842, 1847, 1848, 1849, 1853, 1854, and 1857.
There is a good summary in "Volcanoes of North America" by Charles
Wood and Jurgen Kienle (1990).
Scott Rowland, University of Hawaii
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