USGS/Cascades Volcano Observatory, Vancouver, Washington
Debris Avalanches and Volcanic Landslides
Maps and Graphics, etc.
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[Graphic,21K,GIF]
Mount St. Helens area showing May 18, 1980 devastation,
including the debris avalanche
-- Modified from: Tilling, et.al., 1990
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[Map,26K,InlineGIF]
Inferred minimum extent of Mount Shasta's
debris-avalanche deposits in Shasta Valley.
-- Modified from: Crandell, 1989, USGS Bulletin 1861
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If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
09/02/08, Lyn Topinka