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Monitored volcanoes. These are the volcanoes monitored by the California Volcano Observatory, in order of highest to lowest risk assessment. Mt Shasta. According to USGS risk assessment of the volcanoes in CalVO's region, the following volcanoes were ranked "very high threat potential". Mount Shasta in far-northern California, north of Redding
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.
The Long Valley Caldera was formed by a super-eruption about 760,000 years ago that blasted 140 cubic miles of magma, covering much of east-central California in hot ash that was blown as far away ...
The National Volcano Early Warning and Monitoring System is a U.S. federal program within the U.S. Geological Survey for monitoring volcano activity and providing early warning to threatened areas. It was authorized by the John D. Dingell, Jr. Conservation, Management, and Recreation Act on March 12, 2019.
Pisgah Crater, or Pisgah Volcano, is a young volcanic cinder cone rising above a lava plain in the Mojave Desert, between Barstow and Needles, California in San Bernardino County, California. The volcanic peak is around 2.5 miles (4.0 km) south of historic U.S. Route 66 - National Old Trails Highway and of Interstate 40, and west of the town of ...
Active Volcano The rock volcano at Knott's with the apparatus shed. It was operated by turning the crank in the foreground, built by Henry Legano. Walt built a 12-foot-tall volcano of lava rock trucked in from the Pisgah Crater in the Mojave Desert and equipped it with a boiler that rumbled, hissed, and spit steam at the push of a button. Two ...
The San Francisco volcanic field is an area of volcanoes in northern Arizona, north of Flagstaff, US. The field covers 1,800 square miles (4,700 km 2) of the southern boundary of the Colorado Plateau. The field contains 600 volcanoes ranging in age from nearly 6 million years old to less than 1,000 years ( Miocene to Holocene ), of which Sunset ...
Cima volcanic field is a volcanic field in San Bernardino County, California, close to the border with Nevada. [3] [4] The volcanic field covers a surface area of 600 km 2 (230 sq mi) within the Mojave National Preserve west of the Cima Dome and consists of about 40 volcanic cones with about 60 lava flows. The volcanic cones range from simple ...