Publisher's Synopsis
Excerpt from Potential Hazards From Future Eruptions of Mount St. Helens Volcano, Washington
Mount St. Helens is a symmetrical volcanic cone in southwestern Washington about 75 km northeast of Portland, Oreg. (fig. Most ofthe visible part of the cone has been formed within the last thousand years, but it overlies an older volcanic center that evidently came into existence before years ago (hyde, 1975, p. Bio). Mount St. Helens has had a long history of spasmodic explosive activity, and we believe it to be an especially dangerous volcano because of its past behavior and the relatively high frequency of its eruptions during the last years (table In the future.
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