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Cerro de la Calavera (also known as Mount Calavera) is an 513 ft (156 m) [1] ancient plug dome volcano that last erupted 22 million years ago during the subduction of the Farallon Plate. [3] [better source needed] It is located within the city of Carlsbad, California in the United States. Cerro de la Calavera is only one of three volcanic plugs ...
Volcano almost became the county seat in 1854 and again in 1857, but the newspaper closed in 1857 and afterwards, the town began to decline. [10] Although small, Volcano is a town of many "firsts": [11] 1854 First theater group in California; 1854 First debating society in California; 1854 First circulating library in California
Map all coordinates using OpenStreetMap. Download coordinates as: KML; GPX (all coordinates) ... GPX (secondary coordinates) in Category:Volcanoes of California by ...
Mount Saint Helena (Wappo: Kanamota, "Human Mountain") [4] is a peak in the Mayacamas Mountains with flanks in Napa, Sonoma, and Lake counties of California.Composed of uplifted volcanic rocks from the Clear Lake Volcanic Field, it is one of the few mountains in the San Francisco Bay Area to receive any snowfall during the winter.
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Mount Edziza, a stratovolcano in northwestern British Columbia A topographic map of Canada, showing elevations shaded from green (lower) to brown (higher). Volcanic activity is a major part of the geology of Canada and is characterized by many types of volcanic landform, including lava flows, volcanic plateaus, lava domes, cinder cones, stratovolcanoes, shield volcanoes, submarine volcanoes ...
List of volcanoes in Canada is an incomplete list of volcanoes found in Mainland Canada, in the Canadian islands and in Canadian waters. All but two provinces , Prince Edward Island and Manitoba , have at least one volcano.
Geologic map of the Sonoma Volcanics. The Sonoma Volcanics are a geologic formation of volcanic origin that is widespread in Napa and Sonoma counties, California.Most of the formation is Pliocene in age and includes obsidian, perlitic glass, diatomaceous mud, pyroclastic tuff, pumice, rhyolite tuffs, andesite breccias and interbedded volcanic lava flows.