Mt. Adams, Washington


Location: 46.206N, 121.49W
Elevation: 12,276 feet (3,742 m)
Last Updated: 21 February 2001

Mt. Adams is an active andesitic stratovolcano. Most of the main cone is younger than 220,000 years. Post glacial eruptions and weak fumaroles suggest that Mt. Adams may erupt again. East Crater is a shield volcano along the Indian Heaven volcanic field that erupted basalt during the Pleistocene epoch.


Visit the Casacade Volcano Observatory homepage for more information on the eruptive history and volcanic hazards of Mt. Adams.
Sources of Information:
Hildreth, W., and Fierstein, J., 1985, Mount Adams: Eruptive history of 
an andesite-dacite stratovolcano at the focus of a fundamentally basaltic 
field: U.S. Geological Survey Open-file Report 85-521, 44-50.

Hildreth, W., and Fierstein, J., in preparation, Geologic map of the 
Mount Adams volcanic field: U.S. Geological Survey.

Wood, C.A., and Kienle, J., 1993, Volcanoes of North America: Cambridge 
University Press, New York, 354 p.


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