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Lonquimay

Stratovulcano · Chile · 2832 m

Lonquimay (left) is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age located immediately SE of the largely Pleistocene Tolguaca volcano (extreme right). The Cordón Fissural Oriental fissure zone extends 10 km NE of Lonquimay and has produced a series of vents and cinder cones that have been the source of voluminous lava flows in historical time. Major lava flows erupted during 1887-90 and 1988-90 traveled up to 10 km from their NE-flank vents.
Lonquimay (left) is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age located immediately SE of the largely Pleistocene Tolguaca volcano (extreme right). The Cordón Fissural Oriental fissure zone extends 10 km NE of Lonquimay and has produced a series of vents and cinder cones that have been the source of voluminous lava flows in historical time. Major lava flows erupted during 1887-90 and 1988-90 traveled up to 10 km from their NE-flank vents. · Foto: Photo by Norm Banks, 1990 (U.S. Geological Survey). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Chile
Regione
South America Volcanic Regions / Southern Andean Volcanic Arc
Altitudine
2832 m
Coordinate
-38.379, -71.586
Ultima eruzione
1990
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

Lonquimay is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age immediately SE of Tolguaca volcano. A glacier fills its summit crater and flows down the S flank. It is dominantly andesitic, but basalt and dacite are also found. The prominent NE-SW Cordón Fissural Oriental fissure zone cuts across the entire volcano. A series of NE-flank vents and scoria cones were built along an E-W fissure, some of which have been the source of voluminous lava flows, including those during 1887-90 and 1988-90, that extended out to 10 km.

Sintesi da Wikipedia

Riassunto in inglese

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. 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.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1853~1867 · 1 eruzioni · VEI max. 31880~1894 · 1 eruzioni · VEI max. 31921~1934 · 1 eruzioni · VEI max. 21934~1948 · 1 eruzioni · VEI max. ?1975~1988 · 1 eruzioni · VEI max. 318531880192119481975

Cronologia dettagliata

  1. 1988VEI 3Osservata
    1988-12-25 – 1990-01-24
    NE flank (Navidad Crater)
  2. 1940VEI ?Stima geologica
    1940-02 – In corso
  3. 1933VEI 2Osservata
    1933-01-04 – In corso
  4. 1887VEI 3Osservata
    1887-06-02 – 1890-01
    NE flank
  5. 1853VEI 3Osservata
    1853-02 – In corso

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.