Pre-1980 tephra-fall deposits erupted from Mount St. Helens, Washington
Professional Paper
1563
By: Donal R. Mullineaux
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Abstract
More than 100 tephra-fall deposits erupted from Mount St. Helens within about the last 40,000 years are grouped into tephra sets and layers distinguished from each other chiefly by differences in mineral composition and age. The tephra deposits record a complex history of the volcano, form important time-stratigraphic markers, and provide information about probable kinds, frequencies, and magnitudes of future eruptions.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Pre-1980 tephra-fall deposits erupted from Mount St. Helens, Washington |
| Series title | Professional Paper |
| Series number | 1563 |
| DOI | 10.3133/pp1563 |
| Year Published | 1996 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Volcano Hazards Program |
| Description | 99 p. |