Cerro Azul

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 35.653°S
  • 70.761°W

  • 3788 m
    12425 ft

  • 357060
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Cerro Azul.

The Global Volcanism Program has no Weekly Reports available for Cerro Azul.

The Global Volcanism Program has no Bulletin Reports available for Cerro Azul.

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 11 Holocene eruptive periods.


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1967 Aug 9 Unknown Confirmed 2 Historical Observations Quizapu
1949 Apr 15 ± 5 days Unknown Confirmed 2 Historical Observations Quizapu
1933 1938 Jul 25 (?) Confirmed 2 Historical Observations Quizapu
1916 1932 Apr 21 Confirmed 5 Historical Observations Quizapu
1914 Sep 8 Unknown Confirmed 3 Historical Observations Quizapu
[ 1913 Jan 15 ± 45 days ] [ Unknown ] Uncertain 2   Quizapu
1912 Feb Unknown Confirmed 2 Historical Observations Quizapu
1907 Jul 28 Unknown Confirmed 2 Historical Observations Quizapu
1906 Unknown Confirmed 2 Historical Observations Quizapu
[ 1903 Jan ] [ Unknown ] Uncertain 2   Quizapu
1846 Nov 26 1853 (?) Confirmed 2 Historical Observations Quizapu

Deformation History


There is data available for 1 deformation periods. Expand each entry for additional details.


Deformation during 2010 Feb 27 - 2010 Feb 27 [Subsidence; Observed by InSAR]

Start Date: 2010 Feb 27 Stop Date: 2010 Feb 27 Direction: Subsidence Method: InSAR
Magnitude: 6.000 cm Spatial Extent: 10.00 km Latitude: -36.000 Longitude: -71.000

Remarks: Short-lived subsidence triggered by the Mw 8.8 2010 Maule earthquake

Volcanic ground subsidence observed in interferogram stacks spanning the earthquake (with earthquake effects removed). We assume the ground displacement is of short duration compared to the interferogram time span, so we compute the stack by summing the interferograms and dividing by the number of measurements in the stack for each pixel.

From: Pritchard et al. 2013.


Reference List: Pritchard et al. 2013.

Full References:

Pritchard, M. E., J. A. Jay, F. Aron, S. T. Henderson, and L. E. Lara, 2013. Subsidence at southern Andes volcanoes induced by the 2010 Maule, Chile earthquake. Nature Geoscience, 6, p. 632-636, doi:10.1038/ngeo1855.

Emission History


There is no Emissions History data available for Cerro Azul.

Photo Gallery


Descabezado Grande (center) and Cerro Azul (middle right), seen here from the NW, are the most prominent features of a large volcanic field. The most active of the two large stratovolcanoes is 3810-m-high Cerro Azul. Quizapú, a vent that formed in 1846 on the northern flank of Cerro Azul, was the source of one of the world's largest explosive eruptions of the 20th century in April 1932. The eruption created a 600-700 m wide crater and ejected 9.5 cu km of dacitic tephra. The only historical eruption of Descabezado Grande took place later in 1932.

Photo by Jeff Post, 1988 (Smithsonian Institution).
See title for photo information.
The gaping crater of the 1932 Quizapú eruption (left-center) lies below the summit of Cerro Azul stratovolcano. Cerro Azul was constructed to the south of its twin volcano Descabezado Grande, where this photo was taken. Steep-sided Cerro Azul has a 500-m-wide summit crater that is open to the north. Quizapú was the source of one of the world's largest explosive eruptions of the 20th century in 1932. This eruption created a 600-700 m wide, 150 m deep crater and ejected 9.5 cu km of dacitic tephra.

Photo by Oscar González-Ferrán (University of Chile).
See title for photo information.

Smithsonian Sample Collections Database


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

Affiliated Sites