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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 ...
The volcano is credited with the creation of the High Valley through repeated eruptions the last of which is thought to have occurred 8,500–10,000 years ago. The result was an elevated valley at approximately 1,600 ft (490 m) in elevation with distinct ridgelines reaching up to 3,000 ft (910 m). [3]
In October 2006, the United States Geological Survey (USGS) adopted a nationwide alert system for characterizing the level of unrest and eruptive activity at volcanoes. The system is now used by the Alaska Volcano Observatory, the California Volcano Observatory (California and Nevada), the Cascades Volcano Observatory (Washington, Oregon and Idaho), the Hawaiian Volcano Observatory and the ...
The most recent eruption was approximately 10,000 years ago. [4] The crater is 944 ft (288 m) above sea level, about 250 ft (76 m) above the surrounding basalt lava plains. The scenic and solitary Amboy Crater was a popular sight and stop for travelers on U.S. Route 66 in California before the opening of Interstate 40 in 1973.
The Long Valley Caldera, which includes Mammoth Lakes area, has been having seismic activity, which can precede a volcanic eruption. Scientists say not to worry. One of California's riskiest ...
Some of these volcanic rocks bear traces of hydrothermal alteration. In some places the layers of volcanic rocks are as thick as 100 m (330 ft). [27] There may be other volcanoes buried in the sediment pile; [28] at least four separate aeromagnetic anomalies have been found at the Salton Buttes, and these may be signs of buried volcanoes. [11]
in Category:Volcanoes of California by county. It should hold all the pages in the county-level categories, and may hold other pages such as lists. It should hold all the pages in the county-level categories, and may hold other pages such as lists.
Big Pine volcanic field is a volcanic field in Inyo County, California. [2] The volcanic field covers a surface area of 500 square kilometres (190 sq mi) within the Owens Valley east of the Sierra Nevada and consists of lava flows , one rhyolitic coulee and about 40 volcanic vents including cinder cones .