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Located about 25 miles (40 km) north of Adams is Goat Rocks Wilderness and the heavily eroded ruins of a stratovolcano that is much older than Adams. Unlike Adams, the Goat Rocks volcano was periodically explosive and deposited ash 2.5 million years ago that later solidified into 2,100-foot (640 m) thick tuff layers. [34]
Mount St. Helens (known as Lawetlat'la to the local Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, [1] in the Pacific Northwest region of the United States.
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
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 .
Twelve volcanoes in the arc are over 10,000 feet (3,000 m) in elevation, and the two highest, Mount Rainier and Mount Shasta, exceed 14,000 feet (4,300 m). By volume, the two largest Cascade volcanoes are the broad shields of Medicine Lake Volcano and Newberry Volcano, which are about 145 and 108 cubic miles (600 and 450 km 3) respectively.
The Simcoe Mountains Volcanic Field, sometimes called the Simcoe Highlands, is a group of lava flows and extinct cinder cones located to the east of the Cascade Range in south-central Washington, United States. The mountains lie within Klickitat and Yakima Counties with the northern half making up part of the Yakama Indian Reservation.
One of the most active volcanoes in the world sits ... But unlike mammoth mountains like Washington state’s Mount St. Helens ... This map shows the location of the Axial Seamount on the floor of ...
Volcanoes that are not currently active, but may be either dormant or extinct or of otherwise uncertain inactive volcanic status. Wikimedia Commons has media related to Inactive volcanoes . Subcategories