Luhr, J.F., Carmichael, I.S.E. and Varekamp, J.C. (1984). The 1982 eruptions of El Chichon volcano, Chiapas, Mexico: mineralogy and petrology of the anhydrite-bearing pumices. Journal of Volcanology and Geothermal Research 23: 69-108. doi: 10.1016/0377-0273(84)90057-X. |
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