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The Cascade Arc includes nearly 20 major volcanoes, among a total of over 4,000 separate volcanic vents including numerous stratovolcanoes, shield volcanoes, lava domes, and cinder cones, along with a few isolated examples of rarer volcanic forms such as tuyas. Volcanism in the arc began about 37 million years ago; however, most of the present ...
This is a list of Cascade volcanoes, i.e. volcanoes formed as a result of subduction along the Cascadia subduction zone in the Pacific Northwest of North America. The volcanoes are listed from north to south, by province or state: British Columbia , Washington , Oregon , and California .
Rising above this volcanic platform are a few strikingly large volcanoes, like Mount Hood and Mount St. Helens, that dominate the landscape. [31] The Cascade volcanoes define the Pacific Northwest section of the Ring of Fire, an array of volcanoes that rim the Pacific Ocean. The Ring of Fire is also known for its frequent earthquakes.
The Three Sisters are closely spaced volcanic peaks in the U.S. state of Oregon. They are part of the Cascade Volcanic Arc, a segment of the Cascade Range in western North America extending from southern British Columbia through Washington and Oregon to Northern California. Each over 10,000 feet (3,000 meters) in elevation, they are the third ...
Adams, named for President John Adams, is a member of the Cascade Volcanic Arc, and is one of the arc's largest volcanoes, [7] located in a remote wilderness approximately 34 miles (55 km) east of Mount St. Helens. [8] The Mount Adams Wilderness consists of the upper and western part of the volcano's cone.
It is a major preserved stratovolcano in the Pemberton Volcanic Belt, an extinct portion of the Canadian Cascade Arc. [1] Mount Baker (Near the United States-Canada border) — highest peak in northern Washington. It is an active volcano. [2] Steam activity from its crater occurs relatively frequently. Mount Baker is one of the snowiest places ...
The volcanoes in this category are found in California, Oregon, Washington, and British Columbia, and in two different mountain ranges, the Cascade Range and the Coast Mountains. The Cascade volcanoes are part of the Pacific Ring of Fire that includes over 160 active volcanoes.
At least two volcanoes and one volcanic group may have formed as a result of Canadian Cascade Arc volcanism. [ 28 ] [ 29 ] [ 30 ] The oldest feature, the Franklin Glacier Complex , is a deeply eroded 20 km (12 mi) long and 6 km (3.7 mi) wide geological structure with an elevation of over 2,000 m (6,600 ft) .