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The Cascade Volcanoes (also known as the Cascade Volcanic Arc or the Cascade Arc) are a number of volcanoes in a volcanic arc in western North America, extending from southwestern British Columbia through Washington and Oregon to Northern California, a distance of well over 700 miles (1,100 km).
The volcano is considered the most active in the Cascades within the Holocene epoch, which encompasses roughly the last 10,000 years. [ 12 ] Prior to the 1980 eruption, Mount St. Helens was the fifth-highest peak in Washington.
Name Elevation Location Last eruption meters feet Coordinates; Malumalu: Last 8,000 years Ta‘u-931: 3054: 30,000 years ago [15]: Ofu-Olosega: 639: 2096: 1866 unnamed submarine cone eruption
Pages in category "Volcanoes of Washington (state)" The following 40 pages are in this category, out of 40 total. This list may not reflect recent changes. *
Mount Rainier [a] (/ r eɪ ˈ n ɪər / ray-NEER), also known as Tahoma, is a large active stratovolcano in the Cascade Range of the Pacific Northwest in the United States. The mountain is located in Mount Rainier National Park about 59 miles (95 km) south-southeast of Seattle. [9]
This area contains many small shield volcanoes and cinder cones of mainly alkalic intraplate basalt with fractionated intermediate alkalic products, subordinate subalkaline mafic lavas, and several rhyolites as secondary products. There are about 205 vents that were active between 4.2 million and 600 thousand years ago. [15]
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 .
Glacier Peak is one of the most active of Washington's volcanoes. The volcano formed during the Pleistocene epoch, about one million years ago, and since the most recent ice age, it has produced some of the largest and most explosive eruptions in the state. When continental ice sheets retreated from the region, Glacier Peak began to erupt ...