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Antisana

Photo of this volcano
  • Ecuador
  • Andean Northern Volcanic Arc
  • Composite | Stratovolcano
  • 1802 CE
  • Country
  • Volcanic Province
  • Landform | Volc Type
  • Last Known Eruption
  • 0.481°S
  • 78.141°W

  • 5753 m
    18875 ft

  • 352030
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports available for Antisana.

The Global Volcanism Program has no Weekly Reports available for Antisana.

The Global Volcanism Program has no Bulletin Reports available for Antisana.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

There is data available for 2 confirmed Holocene eruptive periods.

1801 (?) - 1802 May (?) Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode Volcano Uncertain: possibly Reventador
1801 (?) - 1802 May (?) Evidence from Unknown

List of 4 Events for Episode 1 at Volcano Uncertain: possibly Reventador

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Lava flow
   - - - -    - - - - Lava dome Uncertain
1802 Apr
(?)
   - - - - VEI (Explosivity Index)

1748 (in or before) Confirmed Eruption Max VEI: 2 (?)

Episode 1 | Eruption Episode Volcano Uncertain: possibly Reventador
1748 (in or before) - Unknown Evidence from Unknown

List of 2 Events for Episode 1 at Volcano Uncertain: possibly Reventador

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
1748
(in or before)
   - - - - VEI (Explosivity Index)

[ 1728 ] Uncertain Eruption

Episode 1 | Eruption Episode
1728 - Unknown Evidence from Unknown

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Lava flow
1728    - - - - VEI (Explosivity Index)
Deformation History

There is no Deformation History data available for Antisana.

Emission History

There is no Emissions History data available for Antisana.

Photo Gallery

The floor of the massive Chacana caldera is seen here in the foreground, looking SE with glacier-covered Antisana volcano in the distance. Chacana is a 32 x 24 km caldera complex of Pliocene-Holocene age. Its outer flanks extend over 50 km, making it one of the largest rhyolitic centers of the northern Andes. Numerous lava domes were constructed within the caldera, which has been the source of frequent Holocene explosive eruptions. Dacitic lava flows were erupted during the 18th century and numerous hot springs are found on the caldera floor.

Photo by Minard Hall, 1976 (Escuela Politécnica Nacional, Quito).
Massive, 5753-m-high Antisana volcano is seen here from its SW on the northern flank of Cotopaxi volcano. The glacier-clad Antisana was constructed immediately SE of Chacana caldera, the largest rhyolitic center of the northern Andes, which lies beyond the jagged ridge left of Antisana. The only unequivocal historical eruption of Antisana occurred in 1801-02 from a vent NNE of the summit.

Photo by John Ewert, 1992 (U.S. Geological Survey).
Antisana is a massive, glacier-covered stratovolcano NE of Cotopaxi. The 1.4 x 1.8 km summit crater, seen here from the north, is breached to the SE. Viscous, youthful block lava flows have issued from radial fissures on the flanks of 5753-m-high Antisana. The only unequivocal historical eruption took place from 1801 to 1802. Eighteenth-century eruptions occurred NW of Antisana within Chacana caldera, which lies beneath the cloud bank in the foreground.

Photo by Minard Hall, 1975 (Escuela Politécnica Nacional, Quito).
Antisana volcano is one of four massive glacier-covered stratovolcanoes constructed along a N-S line at the western edge of Ecuador's Cordillera Real. Its summit crater is breached to the SE, behind the summit in this view from the NW. Its only unequivocal historical eruption produced a lava flow from a NNE-flank vent at the beginning of the 19th century.

Photo by Minard Hall, 1979 (Escuela Politécnica Nacional, Quito).
Volcán Antisana is seen here looking NE from highway E20 in December 2015. Northeast Peak is to the right and the East Ridge is to the left, with a collapse scarp between them.

Photo by Ailsa Naismith, 2015.
GVP Map Holdings

Maps are not currently available due to technical issues.

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included.

Smithsonian Sample Collections Database

There are no samples for Antisana in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites