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Rainier

Stratovolcanoes, also referred to as composite volcanoes, are constructed of sequential layers of resistant lava flows and fragmental material produced by pyroclastic eruptions. An aerial view of the glacially dissected SW flank of Mount Rainier shows the layered interior of a stratovolcano. Snow cover, which preferentially clings to less-steep layers of fragmental material, accentuates the stratified character of this composite volcano.

Type/Process: Stratovolcano
Volcanic Status: Dendrochronology
Image Number: 027-069
Photographer: Dan Dzurisin, 1982 (U.S. Geological Survey)
Summit Elevation: 4392 meters
Latitude/Longitude: 46.87 N / 121.758 W
Timeframe: Last known eruption 1800-1899
Region: Canada and Western USA

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Smithsonian National Museum of Natural History Geology, Gems, and Minerals Subject Guide Credits