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The Cascade volcanoes have had more than 100 eruptions over the past few thousand years, many of them explosive eruptions. [21] However, certain Cascade volcanoes can be dormant for hundreds or thousands of years between eruptions, and therefore the great risk caused by volcanic activity in the regions is not always readily apparent.
This is a list of Cascade volcanoes, i.e. volcanoes formed as a result of subduction along the Cascadia subduction zone in the Pacific Northwest of North America. The volcanoes are listed from north to south, by province or state: British Columbia , Washington , Oregon , and California .
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 ...
Download QR code; Print/export ... Download as PDF; Printable version; In other projects ... move to sidebar hide. Help. Dormant volcanoes — of the current Holocene ...
The Cascade Crest Montane Forest ecoregion consists of an undulating plateau punctuated by volcanic buttes and cones that reach a maximum elevation of about 6,500 feet (2,000 m). Volcanism in the Pliocene epoch overtopped the existing Miocene volcanics of the Western Cascades Montane Highlands.
The volcano has a volume of 6.0 cubic miles (25 km 3). [8] Mount Bachelor stands 3 miles (4.8 km) southeast of the Tumalo Mountain volcano and 18 miles (29 km) to the southwest of the city of Bend, [2] in the Deschutes National Forest. [9] Weather varies greatly in the area due to the rain shadow caused by the Cascade Range. Air from the ...
In today's puzzle, there are eight theme words to find (including the spangram). Hint: The first one can be found in the top-half of the board. Here are the first two letters for each word:
This article contains a list of volcanoes and a list of protected areas associated with the Cascade Range (northern portion of the Sierra Nevada range and east of the West Coast and Pacific Ocean, and west of the Canadian Rockies / Rocky Mountains chain) of the Pacific Northwest region of the Western United States, on the continent of North America.