File name:


Title: Debris Avalanche and eruption of Mount St. Helens, Washington.
Caption: This animation depicts the 1980 eruption of Mount St. Helens. It shows magma rising to the surface and the subsequent debris avalanche that accompanied the collapse of the mountain. Several photos of the eruption complement the animation.
Keywords: volcanism, composite volcanoes, mass movements, Cascade Range, Mount St. Helens eruptions, magma, rockslides, debris avalanches