Primitive andesites from the Taupo Volcanic Zone formed by magma mixing

  title={Primitive andesites from the Taupo Volcanic Zone formed by magma mixing},
  author={Christoph Beier and Karsten M. Haase and P. A. Brandl and Stefan Krumm},
  journal={Contributions to Mineralogy and Petrology},
Andesites with Mg# >45 erupted at subduction zones form either by partial melting of metasomatized mantle or by mixing and assimilation processes during melt ascent. Primitive whole rock basaltic andesites from the Pukeonake vent in the Tongariro Volcanic Centre in New Zealand’s Taupo Volcanic Zone contain olivine, clino- and orthopyroxene, and plagioclase xeno- and antecrysts in a partly glassy matrix. Glass pools interstitial between minerals and glass inclusions in clinopyroxene… Expand

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