Postglacial lahars and potential hazards in the White Salmon River system on the southwest flank of Mount Adams, Washington
Bulletin
2161
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Abstract
Mount Adams, a stratovolcano in southwestern Washington State, formed during Pleistocene time and reached roughly its present size before the end of the Fraser glaciation, which occurred between 25,000 and 12,000 years ago. Since the last glaciation, Mount Adams has erupted at least nine times, producing eight peripheral lava flows and a cinder cone at the summit but no pyroclastic flows. No stratigraphic evidence was found for the occurrence of lahars concurrently with eruptions; in fact, at least one lahar and one debris avalanche occurred during apparently dormant intervals.
Suggested Citation
Vallance, J.W., 1999, Postglacial lahars and potential hazards in the White Salmon River system on the southwest flank of Mount Adams, Washington: U.S. Geological Survey Bulletin 2161, v, 49 p. ill., maps ; 28 cm., https://doi.org/10.3133/b2161.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Postglacial lahars and potential hazards in the White Salmon River system on the southwest flank of Mount Adams, Washington |
| Series title | Bulletin |
| Series number | 2161 |
| DOI | 10.3133/b2161 |
| Year Published | 1999 |
| Language | ENGLISH |
| Publisher | U.S. Dept. of the Interior, U.S. Geological Survey ; Information Services [distributor], |
| Description | v, 49 p. ill., maps ; 28 cm. |