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Colombia · Stratovulcano

Volcán Azufral

Azufral

Tipo
Stratovulcano
Altitudine
4070 m
Ultima eruzione
-930
Volcán Azufral
Public domain · Wikimedia Commons
Tipo
Stratovulcano
Paese
Colombia
Regione
Sud America / Northern Andean Volcanic Arc
Altitudine
4070 m
Coordinate
1.080, -77.680
Ultima eruzione
-930
Contesto tettonico
Zona di subduzione / Crosta continentale (> 25 km)
Forma vulcanica
Composito
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

4 registrateGlossario
Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni · Usa le frecce per spostarti tra le barre, Invio per aprire
2095 a.C.~1978 a.C. · 1 eruzioni · VEI max. ?1862 a.C.~1745 a.C. · 1 eruzioni · VEI max. ?1745 a.C.~1629 a.C. · 1 eruzioni · VEI max. ?1046 a.C.~930 a.C. · 1 eruzioni · VEI max. 42095 a.C.1862 a.C.1512 a.C.1279 a.C.1046 a.C.

Cronologia dettagliata

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

Vulcani nelle vicinanze

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