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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 "Extinct volcanoes of the United States" The following 86 pages are in this category, out of 86 total. This list may not reflect recent changes. A.
United States Geological Survey; Cascades Volcano Observatory, Vancouver, Washington; Index to CVO online volcanoes. Map: Tom Simkin, Robert I. Tilling, Peter R. Vogt, Stephen H. Kirby, Paul Kimberly, and David B. Stewart, Third Edition (Published 2006) interactive world map of Volcanoes, Earthquakes, Impact Craters, and Plate Tectonics
The Crooked River caldera is a large and ancient volcano that straddles three central Oregon counties. The diameter of the caldera is about 41 by 27 kilometres (25 mi × 17 mi) and is notable for the welded tuff present at Gray Butte, Smith Rock, Powell Buttes, Grizzly Mountain and Barnes Butte. The volcano is considered extinct and last ...
Geologic map of the St. Francois Mountain region. The St. Francois Mountains were formed by volcanic and intrusive activity 1.485 billion (1.485 x 10 9) years ago. [6] By comparison, the Appalachians started forming about 460 million years ago, and the Rockies a mere 140 million years ago.
La Garita Caldera is a large caldera and extinct supervolcano in the San Juan volcanic field in the San Juan Mountains around the town of Creede in southwestern Colorado, United States. [1] It is west of La Garita, Colorado.
Robinson Crater was named for Henry H. Robinson, a United States Geological Survey researcher. [2] Roden Crater is an extinct volcano crater, and a project of artist James Turrell. [3] S P Crater is a cinder cone volcano 25 miles (40 km) north of Flagstaff, Arizona. [4] Saddle Crater; South Sheba Crater; Stewart Crater; Strawberry Crater
Most of the volcanoes of the United States are located along the West Coast, at the subduction of the Pacific and North American tectonic plates.During the 20th century there were only two eruptions in the contiguous United States; Lassen in 1915, and Mount St. Helens in 1980, with Mount Hood in 1907 and Medicine Lake Volcano's Glass Mountain in 1910 being minor unvalidated third and fourth ...