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Volcano Web /

Volcanic places in USA

Listed below are places in the United States that are considered "active" volcanic areas.

Mount St Helens Long Valley
On May 18, 1980, after a long period of rest, this quiet mountain in Washington provided detailed observations on the mechanics of highly explosive eruptions. toppled over like toys

showtime! See the animation of events for this volcanic eruption [194k GIF Animation]. on the mechanics of highly explosive eruptions.

This field seismometer measures earthquakes associated with subsurface volcanic forces and may help to predict future events. It sits on a plateau known as the "Volcanic Tableland" formed by a major eruption 600,000 years ago. link to large image
Large image
San Francisco Peaks
Scientists believe that the volcanic eruptions several million years ago that shaped this mountain in northern Arizona were very similar to the ones observed at Mount St. Helens. When hot volcanic magma encounters ground water, these explosive eruptions can form deep craters seen just south of Arizona in the Pincate Volcanic region of Mexico.