Igneous rock associations 4. Oceanic island volcanism I mineralogy and petrology.(Series)
From: Geoscience Canada
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Date: 3/1/2005
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Author: Dostal, Jaroslav; Greenough, John D.; Mallory-Greenough, Leanne M.
SUMMARY
Oceanic islands tend to occur at the young ends of hotspot trails because they record the passage of oceanic plates over rising convection cells (plumes) in the mantle, of the propagation of cracks in the lithosphere. Basaltic volcanism on oceanic islands is generally unexplosive and, although potentially destructive, poses less threat to human life than volcanism in other tectonic environments. However, the possibility of giant tsunamis from the catastrophic ...
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