Viedma (volcano)
| Viedma | |
|---|---|
| Highest point | |
| Elevation | 1,500 m (4,900 ft)[1] |
| Geography | |
| Location | Argentina/Chile |
| Parent range | Andes |
| Geology | |
| Mountain type | Subglacial volcano |
| Last eruption | November 1988[1] |
Viedma (Spanish pronunciation: [ˈbjeðma]) is a subglacial volcano located below the ice of the Southern Patagonian Ice Field, an area disputed between Argentina and Chile. The 1988 eruption deposited ash and pumice on the ice field and produced a mudflow that reached Viedma Lake.[1] The edifice of the volcano is mainly composed out of basalt or older silica poor basement rocks, while ejecta have SiO2 contents between 62 and 66%.[2] Numerous ash layers in the Viedma lake indicate numerous past eruptions.[3]
See also
References
- ^ a b c d "Viedma". Global Volcanism Program. Smithsonian Institution. Retrieved 2005-02-15.
- ^ Issues in Earth Sciences, Geology, and Geophysics: 2011 Edition. ScholarlyEditions. 9 January 2012. pp. 1240–. ISBN 978-1-4649-6338-4.
- ^ Zentralblatt für Geologie und Paläontologie: Allgemeine und angewandte Geologie einschl. Lagerstättengeologie, regionale Geologie. E. Schweizerbart'sche Verlagsbuchhandlung (Erwin Nägele). 1991. p. 1713.
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