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Ecuador · Stratovolcano

Aliso

Type
Stratovolcano
Elevation
4267m
Last eruption
-2450
The Aliso volcanic complex is composed of lava domes, dome collapse deposits, ignimbrites, lava flows, and lahar deposits. The area is shown in this 4 September 2019 Sentinel-2 satellite image, which is approximately 12 km across. It is located in the jungle east of the town of Baeza in Ecuador.
The Aliso volcanic complex is composed of lava domes, dome collapse deposits, ignimbrites, lava flows, and lahar deposits. The area is shown in this 4 September 2019 Sentinel-2 satellite image, which is approximately 12 km across. It is located in the jungle east of the town of Baeza in Ecuador. · Photo: Satellite image courtesy of Planet Labs Inc., 2019 (https://www.planet.com/).
Type
Stratovolcano
Country
Ecuador
Region
South America / Northern Andean Volcanic Arc
Elevation
4267m
Coordinates
-0.530, -78.000
Last eruption
-2450
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic andesite

Geological summary

The Aliso volcanic complex lies at the eastern foot of the Ecuadorian Andes, east of Antisana volcano and SW of the town of Baeza.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →

From Wikipedia

Aliso, also known as Pan de Azúcar, is a 3,482-metre-high (11,424 ft) volcano in the Ecuadorian Andes to the east of Antisana volcano. The complex contains a semicircular western ridge and lava domes. The volcano has erupted rhyolites and dacites and some andesitic lava flows on a ridge above Baeza. It is covered with tundra and cloud forests. At least two eruptions of Pumayacu occurred during the Holocene; one dated 4400 years ago and another's lapilli deposits overlie a cultural horizon 2000 years old. Older eruptions have been dated at 1.15 ± 0.07 Ma and are of high-potassium types. They compromise typical arc-derived lavas with fractional crystallization and other differentiation processes.

Wikipedia · CC BY-SA · Read full article →

Eruption history

1 recordedGlossary

Record summary

Confirmed eruptions
1
Uncertain eruptions
0
Span of confirmed record
2450 BCE – 2450 BCE
Largest confirmed eruption
No VEI recorded
Confirmed eruptions since 1900
0
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
2450 BCE~2450 BCE · 1 eruptions · max VEI ?2450 BCE2450 BCE2449 BCE2449 BCE2449 BCE

Detailed timeline

  1. 2450 BCEVEI ?Geological estimate
    2450 BCE – end unknown
    Pumayucu

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.