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The California Volcano Observatory (CalVO) is the volcano observatory that monitors the volcanic and geologic activity of California and Nevada. It is a part of the Volcano Hazards Program of the United States Geological Survey, a scientific agency of the United States government. [2]
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.
Effusive eruption resulting in the complete destruction of the municipality of Mascali. [176] 3 Lassen Peak [177] California, United States 1915 First volcano in the Cascades Volcanic Arc heading northwards, possibly the first volcanic eruption recorded using motion picture camera. Pyroclastic flows caused massive fires and evidence of the ...
One of California's riskiest volcanoes has for decades been undergoing geological changes and seismic activity, which are sometimes a precursor to an eruption, but — thankfully — no ...
A historic eruption of Mount Shasta in 1786 may have been observed by Lapérouse, but this is disputed. Smithsonian Institution's Global Volcanism Program says that the 1786 eruption is discredited, and that the last known eruption of Mount Shasta was around 1250 AD, proved by uncorrected radiocarbon dating. [15] [16]
For years now, California has been bracing for the "big one" -- the magnitude 6.7 or greater earthquake that is expected to send ripples through the state within the century. But there's another ...
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.
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 ...