High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive melt: COMMENT AND REPLY: COMMENT | Zendy

P. B. Kelemen | Zendy; Gene M. Yogodzinski | Zendy

Open Access

High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive melt: COMMENT AND REPLY: COMMENT

Author(s) -

P. B. Kelemen,

Gene M. Yogodzinski

Publication year - 2007

Publication title -

geology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.609

H-Index - 215

eISSN - 1943-2682

pISSN - 0091-7613

DOI - 10.1130/g24099c.1

Subject(s) - geology , andesite , magma , mount , geochemistry , igneous differentiation , contamination , petrology , earth science , igneous rock , volcano , volcanic rock , engineering , mechanical engineering , ecology , biology

[Streck et al. (2007)][1] state that primitive andesite lavas (Mg# > 0.6; 53–63 wt% SiO2) from Mt. Shasta are not primary melts, but instead are mixtures of evolved, high-Sr/Y, low-Mg# dacite with primary, low-Sr/Y, high-Mg# basalt. They propose that this mixing forms primitive andesites worldwide

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