Oxygen isotopic determinations of sequentially erupted plagioclases in the 1974 magma of Fuego Volcano, Guatemala

W.I. Rose; I. Friedman; L. G. Woodruff

doi:10.1007/bf02597620

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Oxygen isotopic determinations of sequentially erupted plagioclases in the 1974 magma of Fuego Volcano, Guatemala

W.I. Rose·I. Friedman·L. G. Woodruff

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Abstract

Plagioclases in the 1974 high-Al basalt from Fuego Volcano have ??O18 values of +6.0 to +8.5 per mil. Meteoric water cannot have played a significant role in Fuego's magma. Large, weakly zone clear phenocrysts had ??O18 values in the accepted mantle range, while patchyzoned and oscillatory-zoned plagioclases inferred to have formed later and shallower levels have slightly heavier oxygen isotopic ratios. ?? 1980 Intern. Association of Volcanology and Chemistry of the Earth's Interior.

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W.I. Rose, I. Friedman, L. G. Woodruff. 1980. Oxygen isotopic determinations of sequentially erupted plagioclases in the 1974 magma of Fuego Volcano, Guatemala. https://doi.org/10.1007/bf02597620

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