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Volcanology

Messy magma mixtures

Nature Geoscience volume 3, pages 593–594 (2010)Cite this article

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Andesite magmas were once thought to be simple melts derived from a subducting oceanic slab or the mantle. Analysis of lavas at Mount Hood shows that instead andesites are a complex mixture of magmas formed in the continental crust just before eruption.

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Figure 1: In the crust beneath Mount Hood volcano, a density filter prevents the mafic magma from erupting and a viscosity filter blocks the silicic magma.

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Authors and Affiliations

  1. John Eichelberger is at the United States Geological Survey, USGS Headquarters, Reston, Virginia 20192-0002, USA. jeichelberger@usgs.gov,

    John Eichelberger

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  1. John Eichelberger
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Eichelberger, J. Messy magma mixtures. Nature Geosci 3, 593–594 (2010). https://doi.org/10.1038/ngeo951

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