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Unformatted text preview: • Volcanoes at convergent margins (mafic to felsic composition) • Volcanoes at divergent margins ("oceanic ridges") (mafic composition) • Lavas, welded tuff, vesicular basalt,volcanic bombs, pyroclastic flows, volcanic cloud • Relation bwetween shape of volcanoe, its composition, chemistry of lavas and viscosity of lavas that form the volcano type …. Shield volcano… Cinder Cone volcano and Composite volcano • Dangerous pyroclastic flows cause almost 30 % of fatalities from natural disasters versus tsunamis (about 20%)...
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This note was uploaded on 01/08/2012 for the course GEOLOGY 1001 taught by Professor Danielkelley during the Spring '10 term at LSU.
- Spring '10