Curtis Wharf, Guemes Channel.
Snow and ice-covered Mount Baker, located in northern Washington, is the highest peak in the North Cascades (3,286 m or 10,781 ft) and the northernmost volcano in the conterminous United States. It is the only U.S. volcano in the Cascade Range that has been affected by both alpine and continental glaciation. The stratovolcano is composed mainly of andesite lava flows and breccias and was largely formed prior to the most recent major glaciation (Fraser Glaciation), which occurred between about 25,000 and 10,000 years ago.
The most recent major eruption at Mount Baker, about 6,700 years ago, was accompanied by a major flank-collapse event that caused lahars to rush down the Nooksack River and then eastward into Baker Lake. In 1975-76, Sherman Crater, immediately south of the summit, exhibited signs of renewed volcanic activity as a result of magma intruding into the volcano but not erupting. This activity resulted in monitoring that was more intense than previously applied at any other Cascade Range volcano and produced important baseline data against which recent research has been compared. Sherman Crater has been the site of increased steam emission since 1975.
Although monitoring was increased as a result to the 1975-76 activity, much of it has been dismantled and monitoring at Mount Baker is now insufficient due to the threat that renewed activity would pose to nearby communities and regional infrastructure. Mount Baker is one of several Cascade volcanoes that are high priority to have their monitoring systems enhanced in the coming years.
Location: Washington, Whatcom County
Latitude: 48.777° N
Longitude: 121.813° W
Elevation: 3,286 (m) 10,781 (f)
Volcano type: Stratovolcano
Composition: Andesite
Most recent eruption: 6,700 years ago
Threat Potential: High
volcanoes.usgs.gov/volcanoes/baker/
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March Point. Padilla Bay.
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Whitmarsh Junction. March Point.
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Cap Sante.
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Cap Sante.
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