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Mudflows, Debris Flows, and Lahars -
Maps and Graphics, etc.

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Mount St. Helens, Washington

Click to enlarge [Map,44K,GIF]
Mount St. Helens area showing May 18, 1980 devastation
-- From: Tilling, et.al., 1990

Click to enlarge [Schematic,13K,GIF]
Stratigraphic section in Harry Gardner Park. -- L, lithic-rich layer; P, pumice-rich layer.
-- Modified from: Doukas, 1990, USGS Bulletin 1859

Click to enlarge [Schematic,25K,GIF]
Generalized stratigraphic section of outcrop at Muddy River-Pine Creek Fan (near Lahar Viewpoint).
-- Modified from: Doukas, 1990, USGS Bulletin 1859

Click to enlarge ["Pictogram",InlineGIF]
Mount St. Helens May 18, 1980 Lahar

Mount Rainier, Washington

Click to enlarge [Map,20K,InlineGIF]
Extent of the Osceola and Electron Mudflows
-- Modified from: Crandell, et.al., 1979

Click to enlarge [Map,23K,GIF]
Map showing areas inundated by mudflows from Mount Rainier in the last 5,600 years
-- Modified from: Sisson, 1995, USGS Open-File Report 95-642

Click to enlarge ["Pictogram",InlineGIF]
Glacial Outburst Flood at Mount Rainier

Glacier Peak, Washington

Click to enlarge [Map,21K,InlineGIF]
Areas inundated by debris flows from Glacier Peak eruptions
-- From: Mastin and Waitt, 1995, USGS Open-File Report 95-413


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07/24/00, Lyn Topinka