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Global Volcanism Program | Image GVP-03009

Mount Jefferson of the central Oregon Cascades rises above deep canyons eroded into thick lava flows of the Columbia River Basalt formation that covers a large area to the NE.  Photo by Richard Waitt, 1984 (U.S. Geological Survey).

Mount Jefferson of the central Oregon Cascades rises above deep canyons eroded into thick lava flows of the Columbia River Basalt formation that covers a large area to the NE.

Photo by Richard Waitt, 1984 (U.S. Geological Survey).

Keywords: stratovolcano


Jefferson