Trace element and isotopic evidence for two types of crustal melting beneath a High Cascade volcanic center, Mt. Jefferson, Oregon

@article{Conrey2001TraceEA,
  title={Trace element and isotopic evidence for two types of crustal melting beneath a High Cascade volcanic center, Mt. Jefferson, Oregon},
  author={Richard M. Conrey and Peter R. Hooper and Peter Brennan Larson and John Theodore Chesley and Joaqu{\'i}n Ru{\'i}z},
  journal={Contributions to Mineralogy and Petrology},
  year={2001},
  volume={141},
  pages={710-732}
}
Abstract.Mt. Jefferson is an andesite–dacite composite volcano in the Cascade Range, the locus of andesite and dacite-dominated volcanism for at least 1 million years. A large trace element data set for Mt. Jefferson and its surrounding mafic volcanic platform effectively rules out any fractionation based model (FC or AFC) for the generation of Mt. Jefferson andesites. Several incompatible element (Zr, Nb, Y) concentrations decrease in the range from basalt to andesite, and then increase in the… 
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