Huanquihue Group

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Huanquihue Group
Highest point
Elevation 2,139 m (7,018 ft)
Coordinates 39°53′S 71°35′W / 39.883°S 71.583°W / -39.883; -71.583
Geography
Location Argentina
Geology
Mountain type Stratovolcanoes
Last eruption 1750 ± 100 years

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 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[edit]

References[edit]

  1. ^ Fennell, Lucas M; Ramos, Miguel E; Folguera, Andrés. "Evolución sin y postglaciaria de la vertiente oriental del volcán Lanín, provincia de Neuquén". SciELO (in Spanish). Revista de la Asociación Geológica Argentina. Retrieved 14 May 2016. 
  2. ^ J. Rabassa (22 September 2011). The Late Cenozoic of Patagonia and Tierra del Fuego. Elsevier. p. 106. ISBN 978-0-08-055889-9. 
  3. ^ a b 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 (April 2016). "Synchronisation of sedimentary records using tephra: A postglacial tephrochronological model for the Chilean Lake District". Quaternary Science Reviews. 137: 234–254. 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. (21 January 2014). "The 600 yr eruptive history of Villarrica Volcano (Chile) revealed by annually laminated lake sediments". Geological Society of America Bulletin. 126 (3-4): 481–498. doi:10.1130/b30798.1. 
  5. ^ Mas, Luis Carlos. "History and Present Situation of the Neuquén Geothermal Project" (PDF). International Geothermal Association. Proceedings World Geothermal Congress 2010. Retrieved 14 May 2016.