A dearth of intermediate melts at subduction zone volcanoes and the petrogenesis of arc andesites

Olivier Reubi () and Jon Blundy
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Olivier Reubi: University of Bristol, Wills Memorial Building, Bristol BS8 1RJ, UK
Jon Blundy: University of Bristol, Wills Memorial Building, Bristol BS8 1RJ, UK

Nature, 2009, vol. 461, issue 7268, 1269-1273

Abstract: Arc andesite petrogenesis Olivier Reubi and Jon Blundy present an alternative view of andesite petrogenesis and argue that true liquids of intermediate composition (59 to 66 wt% SiO2) are far less common in the subvolcanic reservoirs of arc volcanoes than is suggested by the abundance of erupted magma within this compositional range. This alternative view resolves several puzzling aspects of arc volcanism and provides important clues to the integration of plutonic and volcanic records.

Date: 2009
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DOI: 10.1038/nature08510

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