Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 23.3°S
  • 67.62°W

  • 6046 m
    19831 ft

  • 355096
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Acamarachi.

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

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

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

The Global Volcanism Program is not aware of any Holocene eruptions from Acamarachi. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Acamarachi page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

Deformation History

There is no Deformation History data available for Acamarachi.

Emission History

There is no Emissions History data available for Acamarachi.

Photo Gallery

Acamarachi, an impressively steep-sided andesitic-dacitic volcano with slopes that reach about 45 degrees, towers above Laguna Aguas Calientes. The 6046-m-high Acamarachi is the highest peak in this part of the northern Andes and lies at the SSE end of a small volcanic complex that extends from the neighboring volcano Colachi. A poorly preserved summit crater and the absence of youthful flank lava flows suggest that Acamarachi was largely constructed in pre-Holocene times, although the summit lava flows may be younger.

Photo by Oscar González-Ferrán (University of Chile).
See title for photo information.
The western flank of Acamarachi volcano is seen in an aerial view with ignimbrite deposits of the Pliocene La Pacana caldera in the background. This steep-sided andesitic volcano, also known as Cerro Pili, rises to 6046 m.

Photo by Insitituto Geográfico Militar, courtesy of Oscar González-Ferrán (University of Chile).
See title for photo information.

Smithsonian Sample Collections Database

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

Affiliated Sites