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Volcán Azufral

Azufral

Stratovulcano · Colombia · 4070 m

Azufral stratovolcano in southern Colombia, seen here from the SE, is also known as Azufral de Túquerres. It is truncated by a 2.5 x 3 km caldera containing a Holocene lava dome complex. A crescent-shaped lake, Laguna Verde, occupies the NW side of the caldera. Nearly a dozen lava domes are present, the latest of which were formed about 3600 years ago and have active fumaroles. The last known eruption of Azufral volcano took place about 1000 years ago.
Azufral stratovolcano in southern Colombia, seen here from the SE, is also known as Azufral de Túquerres. It is truncated by a 2.5 x 3 km caldera containing a Holocene lava dome complex. A crescent-shaped lake, Laguna Verde, occupies the NW side of the caldera. Nearly a dozen lava domes are present, the latest of which were formed about 3600 years ago and have active fumaroles. The last known eruption of Azufral volcano took place about 1000 years ago. · 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
4070 m
Coordinate
1.080, -77.680
Ultima eruzione
-930
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Dacite
Sintesi geologica

Azufral stratovolcano in southern Colombia, also known as Azufral de Túquerres, is truncated by a 2.5 x 3 km caldera containing a Holocene rhyodacitic lava-dome complex. A crescent-shaped lake, Laguna Verde, occupies the NW side of the caldera. Nearly a dozen lava domes are present, the latest of which were formed about 3600 years ago and have active fumaroles. Azufral rocks are more silicic than those of nearby Colombian volcanoes; an apron of rhyodacitic pyroclastic-flow deposits rings the volcano. The last known eruption took place about 1000 years ago.

Sintesi da Wikipedia

Riassunto in inglese

Azufral is a stratovolcano located in the department of Nariño in southern Colombia, 12 km (7 mi) west of the town of Túquerres. It is the only volcano of the Western Ranges of the Colombian Andes. Its name derives from the Spanish word for sulfur, azufre. The volcano is considered semi-dormant but there are numerous fumaroles in the summit crater. The summit of the volcano has an altitude of 4,070 metres (13,350 ft), and the north-western side of the crater contains a crescent-shaped lake named Laguna Verde at 3,970 m (13,025 ft). The lake is 1,100 m (0.68 mi) long and 600 metres (2,000 ft) wide. and its bright green color is a result of the sulfur and iron-based deposits in the crater. There are also two other much smaller lakes in the crater, Laguna Negra and Laguna Cristal.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
2095 BCE~1978 BCE · 1 eruzioni · VEI max. ?1862 BCE~1745 BCE · 1 eruzioni · VEI max. ?1745 BCE~1629 BCE · 1 eruzioni · VEI max. ?1046 BCE~930 BCE · 1 eruzioni · VEI max. 42095 BCE1862 BCE1512 BCE1279 BCE1046 BCE

Cronologia dettagliata

  1. 930 a.C.VEI 4Stima geologica
    BCE 930 – In corso
  2. 1650 a.C. (±150 anni)VEI ?Stima geologica
    BCE 1650 – In corso
  3. 1850 a.C.VEI ?Stima geologica
    BCE 1850 – In corso
  4. 2095 a.C. (±100 anni)VEI ?Stima geologica
    BCE 2095 – In corso

Link esterni

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