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Typical shield volcanoes found in California and Oregon measure 3 to 4 mi (5 to 6 km) in diameter and 1,500 to 2,000 ft (500 to 600 m) in height, [6] while shield volcanoes in the central Mexican Michoacán–Guanajuato volcanic field average 340 m (1,100 ft) in height and 4,100 m (13,500 ft) in width, with an average slope angle of 9.4° and ...
The Medicine Lake shield rises about 3,900 ft (1,200 m) above the Modoc Plateau to an elevation of 7,795 ft (2,376 m). Lavas from Medicine Lake Volcano are estimated to be at least 140 cu mi (600 km 3) in volume, making Medicine Lake the largest volcano by volume in the Cascade Range (Newberry Volcano in Oregon has the second largest volume).
Big Cave is a small shield volcano located in northern California in the Cascade Volcanic Arc of the Pacific Northwest.With an elevation listed at either 4,130 feet (1,260 m) or 4,131 feet (1,259 m), it is the product of subduction of several tectonic plates under the North American Plate, which continues at a rate of 4 centimetres (1.6 in) each year.
Mountain Metres Feet Location and Notes Ojos del Salado: 6,893: 22,615: Argentina/Chile – highest dormant volcano on Earth: Monte Pissis: 6,793: 22,287: Argentina Nevado Tres Cruces
Goosenest is a shield volcano topped by a pyroclastic cone at its summit located in the Cascades of northern California. [1] The area is near Mount Shasta, and represents one of the region's short-lived shield volcanoes, although Goosenest is a larger and longer-lived example.
Geologists believe these basalt-lined table tops are the remains of ancient lava flow from a volcano that erupted 10 to 12 million years ago in what today is either eastern California or western ...
Mt. Shasta, California's largest volcano, had many eruptions in prehistoric times but has remained quiet in the modern era. And like the Long Valley Caldera, the magma beneath Lassen Volcanic ...
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