Abstract
A comparison of each of the volumes of nine deposits of airborne volcanic ash from the Coatepeque Volcano in El Salvador, Central America to the amount of glass crust adhering to intratelluric phenocrysts shows an inverse relationship. As violence, volume, and eruptive abrasion increase, glass crusts decrease. The eruptive violence of a prehistoric eruption and the original volume of ash can thus be calculated from glass-to-crystal ratios observed in erosional remnants.
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Meyer, J.D. Glass crust on intratelluric phenocrysts in volcanic ash as a measure of eruptive violence. Bull Volcanol 35, 358–368 (1971). https://doi.org/10.1007/BF02596961
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DOI: https://doi.org/10.1007/BF02596961