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Mount Rainier is potentially the most dangerous volcano in the Cascade Range
because of its great height, frequent earthquakes, active hydrothermal system,
and extensive glacier mantle. Many debris flows and their distal phases have
inundated areas far from the volcano during postglacial time. Two types of
debris flows, cohesive and noncohesive, have radically different behavior that
relates empirically to clay content. The two types represent the observable end
members of a continuum of debris flow characteristics at Mount Rainier.
Cohesive flows exhibit behavior affected by the cohesion and adhesion of
particles; noncohesive flows are dominated by particle collisions to the extent
of extensive particle cataclasis during near-boundary shear.
-- Scott, et.al, 1992
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[Map,32K,InlineGIF]
[Image,161K,InlineGIF]
