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 The Garibaldi Volcanic Belt

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Kig 'Yar
Kig 'Yar


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PostSubject: The Garibaldi Volcanic Belt    Sun Feb 27, 2011 6:47 am

The Garibaldi Volcanic Belt is within the Pacific Ranges, which is a volcanic belt formed by the subduction of the Juan de Fuca Plate (a remnant of the much larger Farallon Plate) under the North American Plate along the Cascadia subduction zone. The belt is the northern extension of the Cascade Volcanic Arc in the United States (which includes the volcanoes Mount St. Helens and Mount Baker) and contains the most explosive young volcanoes in Canada. The eruption styles in the belt range from effusive to explosive, with compositions from basalt to rhyolite. Morphologically, centers include calderas, cinder cones, stratovolcanoes and small isolated lava masses. Due to repeated continental and alpine glaciations, many of the volcanic deposits in the belt reflect complex interactions between magma composition, topography, and changing ice configurations. The most recent major catastrophic eruption in the Garibaldi Volcanic Belt was from Mount Meager 2,350 BP, which is Canada's most recent major catastrophic eruption.

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