U.S. Department of the Interior U.S. Geological Survey

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Date: 1997-04-10 20:38:46 Stratovolcanoes Cascade Volcanoes Volcanoes Plate tectonics Mount St. Helens Mount Hood Lahar Types of volcanic eruptions Mount Mazama Geology Volcanology Volcanism		U.S. Department of the Interior U.S. Geological Survey Add to Reading List Source URL: vulcan.wr.usgs.gov Download Document from Source Website File Size: 404,55 KB Share Document on Facebook

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