Examples of Washington’s volcanoes are highlighted below. The Cascade Volcanoes (also known as the Cascade Volcanic Arc or the Cascade … The Cascade Range or Cascades is a major mountain range of western North America.. Credit... Amanda Lucier for The New York Times The state also contains numerous dormant or extinct volcanoes, including five major volcanoes. Taking its name from the Cascade Range, the arc has 18 volcanoes in all, many of them still active and the rest considered potentially active. The familiar snow-clad peaks of the Cascade Range are part of a 1,300 km (800 mi) chain of volcanoes, which extends from northern California to southern British Columbia. During the past 4,000 years eruptions have occurred at an average rate of about 2 per century. The Cascade Volcanoes are part of the Pacific Ring of Fire, the ring of volcanoes and associated mountains around the Pacific Ocean. The range stretches 1,100 kilometers (700 miles) north-to-south, and is approximately 130 kilometers (80 miles) across east-to-west.. The frequency of eruptions varies with each volcano. Volcanoes have been erupting in the Cascade Range for over 500,000 years. Of the most active, seven have had some volcanic activity reported in the last 200 years. Many peaks in the Cascade Range exceed 3,000 meters (10,000 feet). In fact all recent volcanic eruptions in the USA outside Hawaii and Alaska have been from Cascades volcanoes. The Cascade Range The Cascade Mountain Range is sometimes called the Cascades or Cascade Mountains. The North Cascades has many peaks that are of non-volcanic origin though it does have some significant volcanoes. Eruptions in the Cascade Range during the past 4,000 years. For the namesake mountain range see Cascade Range. Active volcanoes dominate the skyline of the Pacific Northwest. The mountain range is made up of different regions that all have their own geological characteristic. There are 18 volcanoes in the Cascade range and most of them have been active in the past 2000 years. Map of Cascade Volcanoes ... Newberry Volcano Crater Lake Medicine Lake Volcano Mount Shasta Lassen Peak Olympic Mountains Coast Range Klamath Falls Eugene Salem Portland Bellingham Vancouver, B.C. Spokane Longview Vancouver Redding Yakima Pendleton Bend Chehalis Olympia Tacoma Everett Seattle Scale 0 50 100 Miles 0 50 100 150 200 Kilometers. 5/14/2021 Cascade Volcanoes - Wikipedia 1/11 Cascades Volcanoes Mount Rainier from the northeast Geography Location California, Oregon, and Washington, United States, and British Columbia, Canada Cascade Volcanoes This article is for the volcanic arc. There are 18 volcanoes in the Cascade range and most of them have been active in the past 2000 years. All of the known historic eruptions in the contiguous United States have been from the Cascade Volcanoes. Cascade volcanoes—Active during the past 200 Years. More than a dozen active or potentially . active volcanoes crown the Cascade Range. All five major volcanoes in Washington are part of the Cascade Range, which is approximately 1,200 mi long, stretching from the Canadian province of British Columbia to the state of California. It runs from Canada‘s British Columbia through the U.S. states of Washington and Oregon to Northern California.. (Dormant volcanoes are those which have not been active for a long time, but are still not fully extinct.) Mount Hood in Oregon is one of 161 active volcanoes in the United States, many of them in the Pacific Northwest’s Cascade Range. Since the signing of the Declaration of Independence in 1776, at least seven Cascade volcanoes have erupted. 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