Field Discovery and  Investigations of the 
1980 Eruption of Mt. St. Helens

Mt. St.jpg (167012 bytes)
Mt. St. Helens as viewed from Windy Ridge Area.

Lava Canyon.jpg (373024 bytes)
A lava canyon at Mt. St. Helens.

upstream Lava Canyon.jpg (384430 bytes)
Stratigraphic sequence up-stream from the lava canyon.

Mudflow 2.jpg (396924 bytes)
Airfall and pyroclastic mudflow stratigraphy.

Stratagraphic mudflow.jpg (375356 bytes)
Close-up view of mudflow stratigraphy.

tree cast 2.jpg (355137 bytes)
Tree cast

tree cast.jpg (313051 bytes)
Tree cast

Resources about volcanoes
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