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Colombia · Stratovolcano

Volcán Azufral

Azufral

Type
Stratovolcano
Elevation
4070m
Last eruption
-930
Volcán Azufral
Public domain · Wikimedia Commons
Type
Stratovolcano
Country
Colombia
Region
South America / Northern Andean Volcanic Arc
Elevation
4070m
Coordinates
1.080, -77.680
Last eruption
-930
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Dacite
Geological summary

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.

From Wikipedia

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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Eruption history

4 recordedGlossary
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
2095 BCE~1978 BCE · 1 eruptions · max VEI ?1862 BCE~1745 BCE · 1 eruptions · max VEI ?1745 BCE~1629 BCE · 1 eruptions · max VEI ?1046 BCE~930 BCE · 1 eruptions · max VEI 42095 BCE1862 BCE1512 BCE1279 BCE1046 BCE

Detailed timeline

  1. 930 BCEVEI 4Geological estimate
    930 BCE – end unknown
  2. 1650 BCE (±150 yrs)VEI ?Geological estimate
    1650 BCE – end unknown
  3. 1850 BCEVEI ?Geological estimate
    1850 BCE – end unknown
  4. 2095 BCE (±100 yrs)VEI ?Geological estimate
    2095 BCE – end unknown

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.