Report on Guallatiri (Chile) — July 1996
Bulletin of the Global Volcanism Network, vol. 21, no. 7 (July 1996)
Managing Editor: Richard Wunderman.
Guallatiri (Chile) Quiet emission of vapor from summit crater and S flank fumaroles
Please cite this report as:
Global Volcanism Program, 1996. Report on Guallatiri (Chile) (Wunderman, R., ed.). Bulletin of the Global Volcanism Network, 21:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN199607-355020.
18.42°S, 69.092°W; summit elev. 6071 m
All times are local (unless otherwise noted)
On 19 and 20 July, quiet emissions and occasional denser puffs of white vapor from the summit crater were observed. A zone of fumaroles on the S flank of the volcano, free of snow and ~400 m below the summit, also released a similar amount of vapor as that from the summit crater.
Guallatiri, one of N Chile's most active volcanoes, is a symmetrical ice-clad volcano at the S end of the Nevados de Quimsachata volcano group.
Geologic Background. One of northern Chile's most active volcanoes, Volcán Guallatiri is a symmetrical ice-clad stratovolcano at the SW end of the Nevados de Quimsachata volcano group. It lies just W of the border with Bolivia and is capped by a central dacitic dome or lava complex, with the active vent situated on its S side. Thick lava flows are prominent on the lower N and W flanks of the andesitic-to-rhyolitic volcano. Minor explosive eruptions have been reported since the beginning of the 19th century. Intense fumarolic activity with "jet-like" noises continues, and numerous solfataras extend more than 300 m down the W flank.
Information Contacts: J. Sesiano, Département de Minéralogie, Université de Genève, 13 rue des Maraîchers, 1121 Genève 4, Switzerland.