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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 0.552°N
  • 77.58°W

  • 3955 m
    12972 ft

  • 352001
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Soche.

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

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

Volcano Types

Lava dome(s)

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Andesite / Basaltic Andesite


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

Volcán el Soche, a small stratovolcano near the Colombia border, is the northernmost of a chain of Ecuadorian volcanoes east of the principal volcanic axis. The dominantly dacitic Soche volcano was constructed over Paleozoic rocks and has a summit caldera that opens towards the east. A major explosive eruption took place during the early Holocene at about 8600 years BP, depositing tephra NW into Colombia. The ejection of voluminous dacitic airfall pumice and pyroclastic flows was followed by the formation of two lava domes in the caldera.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
6650 BCE (?) Unknown Confirmed 5 Radiocarbon (uncorrected)

The Global Volcanism Program has no synonyms or subfeatures listed for Soche.

Photo Gallery

The small forested volcano left of the center of this NASA Landsat image, its eastern (right) flank traversed by a winding road, is Volcán el Soche. This small stratovolcano near the Colombia border lies just west of the Río Chingual, which vertically bisects this image. Soche is the northernmost of a chain of Ecuadorian volcanoes east of the principal volcanic axis and was the source of a major explosive eruption during the early Holocene. The village of La Bonita (lower left-center) lies at the southern end of the volcano.

NASA Landsat7 image (


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Beate B, 1992. . (pers. comm.).

Eissen J-P, 2006. . (pers. comm.).

Hall M L, Mothes P A, 2008b. Volcanic impediments in the progressive development of pre-Columbian civilizations in the Ecuadorian Andes. J Volc Geotherm Res, 176: 344-355.

INECEL, 1980. Estudio de reconocimiento de los recursos geotermicos de la Republica del Ecuador. Inf Geovulcanologico Realirado Aquater/BRGM/OLADE, unpublished rpt.

Affiliated Databases

Large Eruptions of Soche Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.