News From the Field Complex Structure Observed in Tonga Mantle Wedge Has Implications for the Evolution of Volcanic Arcs
April 12, 2007
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The subduction zones, where oceanic plates sink beneath the continents, produce volcanic arcs such as those that make up the "rim of fire" around the Pacific Ocean. Although geologists have a pretty good picture of the processes that produce volcanic arcs, a new study finds that the structure of the mantle wedge above the subducting plate may be far more complex than anyone had imagined.
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Source University of California, Santa Cruz
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