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Lonquimay Volcano is a stratovolcano of late-Pleistocene to dominantly Holocene age, with the shape of a truncated cone. The cone is largely andesitic, though basaltic and dacitic rocks are present.[1] It is located in the La Araucanía Region of Chile, immediately SE of Tolhuaca volcano. Sierra Nevada and Llaima are their neighbors to the south. The snow-capped volcano lies within the protected area Malalcahuello-Nalcas.

Lonquimay
Lonquimay in winter.
Highest point
Elevation2,865 m (9,400 ft)
Coordinates38°22′36″S 71°35′00″W
Geography
Lonquimay
Chile
Parent rangeAndes
Geology
Mountain typeStratovolcano
Last eruption1988 to 1990

The volcano's last eruption began on December 25, 1988, earning it the nickname "Navidad".[2] The eruption lasted for 13 months before ending in 1990. The Volcanic Explositivy Index was 3, indicating tropospheric injections and catastrophic damage. The eruption was from a flank vent and involved mostly andesite lava, and had been preceded by increased seismicity for three weeks.[3] The volume of the lava flow decreased as time went on and the vent dimensions decreased, though by the end of the eruption the andesite had still built up to a length of 10.2 km.[3]

There was only a single fatality for the duration of the eruption, but it caused the evacuation of over 2000 people and caused extensive damage to farming and livestock in the surrounding region.[2][4]

Research that models the internal architecture of the volcano indicate that Lonquimay has reached its maximum height and that any large eruption of lava will likely occur from flank vents and not from the summit.[5]


See also



References


  1. "Lonquimay." Global Volcanism Program. Smithsonian Institution
  2. "Lonquimay Volcano Eruptions". Volcano Discovery.
  3. Sparks (1992). "Morphological, structural, and textural variations in the 1988-1990 andesite lava of Lonquimay volcano, Chile". Cambridge University Geological Magazine.
  4. Naranjo, Jose. "Lonquimay." Global Volcanism Program. Smithsonian Institution National Museum of Natural History
  5. Contreras, María Angélica; Castruccio, Ángelo (2018). El control de las propiedades del sistema magmático en las dimensiones que alcanza un edificio volcánico: Análisis de los volcanes Lascar, Lonquimay y Llaima, Andes de Chile [The control of the properties of the magmatic system in the dimensions reached by a volcanic building: Analysis of the Lascar, Lonquimay and Llaima volcanoes, Andes of Chile]. XV Congreso Geológico Chileno (in Spanish). Concepción, Chile.




На других языках


[de] Lonquimay (Vulkan)

Der Lonquimay ist ein aktiver Vulkan zwischen den Nationalen Schutzgebieten Reserva Nacional Malalcahuello und Reserva Nacional Nalcas im Nordosten Araukaniens in Chile. Im Süden liegt die Ortschaft Malalcahuello, durch welche die internationale Passstraße CH-181 nach Argentinien führt. Die Ortschaft Lonquimay liegt 21 km in südöstlicher Richtung.
- [en] Lonquimay (volcano)

[es] Volcán Lonquimay

El volcán Lonquimay (en idioma mapuche, «bosque tupido»)[2] es un volcán chileno situado en la cordillera de Los Andes, en la localidad de Malalcahuello perteneciente a la comuna de Curacautín y parte de la comuna de Lonquimay, pertenecientes a su vez a la Provincia de Malleco de la Región de la Araucanía.

[fr] Lonquimay (volcan)

Le volcan Lonquimay est un stratovolcan du Chili, situé au sein de la cordillère des Andes, dans la localité de Malalcahuello, commune de Lonquimay, province de Malleco de la région d'Araucanie, à plus de 650 km au sud de Santiago.



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