USGS/Cascades Volcano Observatory, Vancouver, Washington
REPORT:
Postglacial Lahars and Potential Hazards in the White Salmon River System on the Southwest
Flank of Mount Adams, Washington
-- James W. Vallance, 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, 49p.
Table of Contents
-
Abstract
- Introduction
- Purpose and scope
- Drainage
- Terminology
- Geology of the Mount Adams area
- Glaciation
- Tephra
- Volcanism at Mount Adams
- Hydrothermal alteration
- Lahars in the White Salmon drainage
- Lahars near the confluence with the Columbia River
- Lahars in Lower Cascade Creek
- Trout Lake mudflow
- Distribution, characteristics, and volume
- Texture, composition, and mineralogy
- Source and origin
- Post-P,pre-W lahar
- Salt Creek Lahar
- Distribution, character, and volume
- Texture, composition, and mineralogy
- 1921 debris avalanche
- Historic lahars
- Origin of cirque on the southwest side of Mount Adams
- Hazards assessment
- Slope failure
- Hazards
- Hazards due to debris avalanches, lahars, and floods
- Hazards from lava flows
- Hazards from explosive eruptions
- Hazards zonation
- Lahar-hazard zones
- Lava-flow-hazard zones
- Mitigation of hazards
- References
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02/23/06, Lyn Topinka