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Cumbal

Stratovulcano · Colombia · 4764 m

Cumbal is the southernmost historically active volcano of Colombia.  It is seen here from the north, with a young lava dome occupying the 150-m-wide summit crater.  Flank craters, the youngest of which is Boca de Mundo Nuevo, have formed along radial fissures on the east and south flanks of the nearly symmetrical volcano.  Eruptions from the upper east flank produced a 6-km-long lava field.  Explosive eruptions in 1877 and 1926 are the only known historical activity from Cumbal.
Cumbal is the southernmost historically active volcano of Colombia. It is seen here from the north, with a young lava dome occupying the 150-m-wide summit crater. Flank craters, the youngest of which is Boca de Mundo Nuevo, have formed along radial fissures on the east and south flanks of the nearly symmetrical volcano. Eruptions from the upper east flank produced a 6-km-long lava field. Explosive eruptions in 1877 and 1926 are the only known historical activity from Cumbal. · Foto: Photo by Norm Banks, 1989 (U.S. Geological Survey). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Colombia
Regione
South America Volcanic Regions / Northern Andean Volcanic Arc
Altitudine
4764 m
Coordinate
0.950, -77.870
Ultima eruzione
1926
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

Many youthful lava flows extend from the glacier-capped Cumbal volcano, the southernmost historically active volcano of Colombia. The volcano is elongated in a NE-SW direction and is composed primarily of andesitic-dacitic lava flows. Two fumarolically active craters occupy the summit ridge: the main crater on the NE side and Mundo Nuevo crater on the SW. A young lava dome occupies the 250-m-wide summit crater, and eruptions from the upper E flank produced a 6-km-long lava field. The oldest crater lies NNE of the summit crater, suggesting SW-ward migration of activity. Explosive eruptions in 1877 and 1926 are the only known historical activity. Thermal springs are located on the SE flanks.

Sintesi da Wikipedia

Il Cumbal è un vulcano della Colombia. Con un'altezza di 4.764 metri sul livello del mare è una delle cima più elevata della Colombia meridionale. È localizzato nella Cordillera Occidental, nel dipartimento di Nariño. In passato veniva estratto lo zolfo dal suo cratere utilizzando metodi tradizionali di estrazione mineraria. I minatori sfruttavano anche il ghiaccio presente lungo le pendici del vulcano, che rivendevano presso il mercato di Ipiales.

Wikipedia · CC BY-SA · Leggi l'articolo completo

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1877~1882 · 1 eruzioni · VEI max. 21921~1926 · 1 eruzioni · VEI max. 218771887190219111921

Cronologia dettagliata

  1. 1926VEI 2Osservata
    1926-12-20 – 1926-12-21
  2. 1877VEI 2Osservata
    1877-12 – In corso

Link esterni

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