This article is about the volcanic arc. For the mountain range, see Cascade Range.
Cascades Volcanoes
Mount Rainier from the northeast
Geography
Location
California, Oregon, and Washington, United States, and British Columbia, Canada
The Cascade Volcanoes (also known as the Cascade Volcanic Arc or the Cascade Arc) are a number of volcanoes in a volcanic arc in western North America, extending from southwestern British Columbia through Washington and Oregon to Northern California, a distance of well over 700 miles (1,100 km). The arc formed due to subduction along the Cascadia subduction zone. Although taking its name from the Cascade Range, this term is a geologic grouping rather than a geographic one, and the Cascade Volcanoes extend north into the Coast Mountains, past the Fraser River which is the northward limit of the Cascade Range proper.
Some of the major cities along the length of the arc include Portland, Seattle, and Vancouver, and the population in the region exceeds 10 million. All could be potentially affected by volcanic activity and great subduction-zone earthquakes along the arc. Because the population of the Pacific Northwest is rapidly increasing, the Cascade volcanoes are some of the most dangerous, due to their eruptive history and potential for future eruptions, and because they are underlain by weak, hydrothermally altered volcanic rocks that are susceptible to failure. Consequently, Mount Rainier is one of the Decade Volcanoes identified by the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) as being worthy of particular study, due to the danger it poses to Seattle and Tacoma. Many large, long-runout landslides originating on Cascade volcanoes have engulfed valleys tens of kilometers from their sources, and some of the areas affected now support large populations.
The Cascade Volcanoes are part of the Pacific Ring of Fire, the ring of volcanoes and associated mountains around the Pacific Ocean. The Cascade Volcanoes have erupted several times in recorded history. Two most recent were Lassen Peak in 1914 to 1921 and a major eruption of Mount St. Helens in 1980. It is also the site of Canada's most recent major eruption, in 410BCE at the Mount Meager massif.[1]
^"Meager". Global Volcanism Program. Smithsonian Institution.
The CascadeVolcanoes (also known as the Cascade Volcanic Arc or the Cascade Arc) are a number of volcanoes in a volcanic arc in western North America...
This is a list of Cascadevolcanoes, i.e. volcanoes formed as a result of subduction along the Cascadia subduction zone in the Pacific Northwest of North...
mountains, such as many of those in the North Cascades, and the notable volcanoes known as the High Cascades. The small part of the range in British Columbia...
A list (incomplete) of volcanoes on Earth arranged by elevation in metres. A list (incomplete) of volcanoes on Earth arranged by elevation in meters from...
David A. Johnston CascadesVolcano Observatory (CVO) is a volcano observatory in the US that monitors volcanoes in the northern Cascade Range. It was established...
area: the CascadeVolcanoes, the Columbia Plateau, the North Cascades, the Coast Mountains, and the Insular Mountains. The CascadeVolcanoes are an active...
the Cascade Range volcanoes; the volume of snow and ice on Mount Baker, 0.43 cu mi (1.79 km3) is greater than that of all the other Cascadesvolcanoes (except...
Oregon, where it is one of the most accessible volcanoes in the state. It is the largest volcano in the Cascade Volcanic Arc at 620 square miles (1,600 km2)...
Volcanism of Eastern Canada List of Northern Cordilleran volcanoes List of mountains in Canada List of Cascadevolcanoes Catalogue of Canadian Volcanoes...
contains a list of volcanoes in the United States and its territories. Geothermal energy in the United States List of Cascadevolcanoes List of large volume...
snow]], etc.) than anywhere in the Cascade Range south of the Three Sisters volcanoes in Oregon. Though the volcano lies too far to the south to support...
Lyn (2008-05-21). "Naming the Cascade Range Volcanoes: Mount Adams, Washington". Volcanoes and History. CascadesVolcano Observatory (CVO). Archived from...
to organize the volcanoes by age, scientists typically divide them into the High Cascades, younger volcanoes, and the Western Cascades, consisting of the...
language Klamath) is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range. Most of the mountain...
major eruption in the Cascade Range at 2–3 per century. Mount Rainier is listed as a Decade Volcano, or one of the 16 volcanoes with the greatest likelihood...
Butte, is a dormant stratovolcano atop a shield volcano in the Cascade Volcanic Arc and the Cascade Range of central Oregon. Named Mount Bachelor because...
between 750 and 915 active or dormant volcanoes, around two-thirds of the world total. The exact number of volcanoes within the Ring of Fire depends on which...
main Cascades range that includes several Oregon volcanoes less than 3.5 million years old; it is also a member of a group of extinct volcanoes distinguished...
Amar (December 18, 2003). "Crater Lake (Mount Mazama)". Skiing the CascadeVolcanoes. skimountaineer.com. Archived from the original on September 10, 2013...
Waka-nunee-Tuki-wuki; Karuk: Úytaahkoo) is a potentially active volcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation...
are underwater, most volcanoes are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent...
Oregon CascadeVolcanoes, a geological grouping of volcanoes, including those in the Cascade Range and some in the Coast Mountains Fort Cascades, a US...
for a peak to qualify as an independent summit, yet most lists of Cascadevolcanoes omit it nonetheless. The name "Shastina" is a diminutive of Shasta...
Global Information
