Repeated recharge, assimilation, and hybridization in magmas erupted from El Chichón as recorded by plagioclase and amphibole phenocrysts

@inproceedings{Andrews2008RepeatedRA,
  title={Repeated recharge, assimilation, and hybridization in magmas erupted from El Chich{\'o}n as recorded by plagioclase and amphibole phenocrysts},
  author={Benjamin James Andrews and James Edward Gardner and Todd B. Housh},
  year={2008}
}
Abstract Compositional and isotopic zoning patterns in plagioclase and amphibole phenocrysts from El Chichon record multiple cycles of country rock assimilation, magma injection, hybridization, and mixing. Laser ablation ICP-MS and electron microprobe analyses of plagioclase crystals from 7 eruptions spanning 3100 years reveal four types of zoning. These compositional and isotopic zones are often associated with textural changes observed in the crystals in thin section (e.g. sieved or patchy… CONTINUE READING
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Thermal and rheological controls on the formation of mafic enclaves or banded pumice

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