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Unformatted text preview: o Composite cones (stratovolcanoes) Mount Fuji Violent, large-volume eruptions o Cinder cones Violent, but low-volume o Shield volcanoes Gentle, gradual, eruptions of high volume Oozing magma o Plug domes Potentially explosive and violent • Magmas o Contain dissolved gasses o Gets trapped and held in magma, it can be blasted into the as pyroclastic flow (weakness in the side, Mont Pelee 1902 and Mount St. Helens 1980) • Size and character o Vary with the quantity of magma o Gas build up o Viscosity caused by silica 21/10/2008 11:50:00 ← 21/10/2008 11:50:00 ←...
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- Summer '07
- Volcano, Mount Fuji, secondary effect Volcanoes, major damaging factor, Violent volcanoes