Systematic petrochemical differences in andesite suites

@article{Gunn1974SystematicPD,
  title={Systematic petrochemical differences in andesite suites},
  author={Bernard M. Gunn},
  journal={Bulletin Volcanologique},
  year={1974},
  volume={38},
  pages={481-490}
}
  • B. Gunn
  • Published 1 March 1974
  • Geology
  • Bulletin Volcanologique
When the chemical compositions of andesites are computed by a least mean squares technique at 60 % silica for different volcanoes and provinces, systematic differences appear. While island arcs in general have lower K, Rb, Ba, Th, Sr and higher Ca than the continental andesites, individual volcanoes within a province often show up to orders of magnitude differences in these elements. Of the seven main Quaternary volcanic provinces of the western American Cordillera (Alcutian, Cascade, Central… 
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