Huanquihue Group

The Huanquihue Group (Spanish pronunciation: [waŋˈkiwe]) is a group of young basaltic stratovolcanoes in Argentina near the border with Chile, south of Lanín volcano. The Huanquihue group is located south of Epulafquén Lake, north of Lolog Lake and west of Reigolil-Pirihueico Fault in Chile. Volcanism is associated with the Liquiñe-Ofqui Fault.[1]

Huanquihue Group
Highest point
Elevation2,139 m (7,018 ft)
Coordinates39°53′S 71°35′W
Geography
LocationArgentina
Geology
Mountain typeStratovolcanoes
Last eruption1750 ± 100 years

Huanquihue volcano itself is eroded, but El Escorial cinder cone has been active in the Holocene. One of its tephras overlies an older formation that was erupted 1400 BP.[2] Lavas from this cone form a peninsula in Lake Epulafquen and modified the local hydrography. Another cinder cone La Angostura formed a peninsula separating the lakes Epulafquen and Huechulafquen. This cone has three craters.

A tephra layer of black trachyandesite has been linked to Huanquihue and is dated 4028-4212 BP.[3] Varve count dating has indicated that tephras in Lake Villarrica and Lake Calafquen erupted presumably in 1591 are compositionally similar to Huanquihue scorias.[4] A VEI-3 eruption of basaltic trachyandesite has been dated at that year.[3] Oral tradition reports the occurrence of an eruption at the end of the 17th century.[5]

See also

References
  1. Fennell, Lucas M.; Ramos, Miguel E.; Folguera, Andrés (March 2014). "Evolución sin y postglaciaria de la vertiente oriental del volcán Lanín, provincia de Neuquén" [Syn and postglacial evolution of the eastern slope of the Lanín volcano, Neuquén province]. Revista de la Asociación Geológica Argentina (in Spanish). 71 (1): 100–111.
  2. Corbella, Hugo; Lara, Luis E. (2008). "Late Cenozoic Quaternary Volcanism in Patagonia and Tierra del Fuego". In Rabassa, J. (ed.). The Late Cenozoic of Patagonia and Tierra del Fuego. Developments in Quaternary Sciences. Vol. 11. pp. 95–119. doi:10.1016/S1571-0866(07)10006-3. ISBN 978-0-444-52954-1.
  3. Fontijn, Karen; Rawson, Harriet; Van Daele, Maarten; Moernaut, Jasper; Abarzúa, Ana M.; Heirman, Katrien; Bertrand, Sébastien; Pyle, David M.; Mather, Tamsin A.; De Batist, Marc; Naranjo, Jose-Antonio; Moreno, Hugo (1 April 2016). "Synchronisation of sedimentary records using tephra: A postglacial tephrochronological model for the Chilean Lake District". Quaternary Science Reviews. 137: 234–254. Bibcode:2016QSRv..137..234F. doi:10.1016/j.quascirev.2016.02.015.
  4. Van Daele, M.; Moernaut, J.; Silversmit, G.; Schmidt, S.; Fontijn, K.; Heirman, K.; Vandoorne, W.; De Clercq, M.; Van Acker, J.; Wolff, C.; Pino, M.; Urrutia, R.; Roberts, S. J.; Vincze, L.; De Batist, M. (1 March 2014). "The 600 yr eruptive history of Villarrica Volcano (Chile) revealed by annually laminated lake sediments" (PDF). Geological Society of America Bulletin. 126 (3–4): 481–498. Bibcode:2014GSAB..126..481V. doi:10.1130/b30798.1.
  5. Mas, Luis Carlos (April 2010). History and Present Situation of the Neuquén Geothermal Project (PDF). Proceedings World Geothermal Congress. S2CID 208369582.


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