San Felix

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 26.294°S
  • 80.112°W

  • 159 m
    522 ft

  • 356010
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for San Felix.

The Global Volcanism Program has no Weekly Reports available for San Felix.

The Global Volcanism Program has no Bulletin Reports available for San Felix.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

159 m / 522 ft


Volcano Types

Tuff cone(s)

Rock Types

Trachybasalt / Tephrite Basanite
Basalt / Picro-Basalt
Trachyte / Trachyandesite

Tectonic Setting

Oceanic crust (< 15 km)


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

Geological Summary

San Félix Island, 800 km W of the Chilean coast, consists largely of a low, cliff-bounded lava platform separating two tuff cones. The Islota Gonzáles cone to the SW is separated from the main island by a shallow submerged platform. Cerro Amarillo at the western end forms the high point of the island and is the source of fresh-looking hawaiite lava flows that reached the sea and formed the low lava platform at the SW tip of the island. A ship captain reported a dull red glow at the summit in 1923. Willis and Washington (1924) considered the youthful lava flows to predate discovery of the island in the 16th century, but not be more than a few centuries old. However, Ar-Ar dating by Haase et al. (2000) determined that the adjacent plateau age was 421 +/- 18 ka, and considered the advanced erosion of the island as indicative of several hundred thousands of years of inactivity.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Gonzalez-Ferran O, 1995. Volcanes de Chile. Santiago: Instituto Geografico Militar, 635 p.

Haase K M, Mertz D F, Sharp W S, Garbe-Schonberg C-D, 2000. Sr-Nd-Pb isotope rations, geochemical compositions, and 40Ar/39Ar data of lavas from San Felix Island (Southeast Pacific): Implications for magma genesis and sources. Terra Nova 12, 90-96.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Richards A F, 1962. Archipelago de Colon, Isla San Felix and Islas Juan Fernandez. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 14: 1-50.

Willis B, Washington H S, 1924. San Felix and San Ambrosio: their geology and petrology. Geol Soc Amer Bull, 35: 365-384.

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

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.


Feature Name Feature Type Elevation Latitude Longitude
Amarillo, Cerro Tuff cone 193 m 26° 16' 0" S 80° 7' 0" W
Gonzales, Islota Tuff cone 132 m 26° 40' 0" N 80° 7' 0" W

The Global Volcanism Program has no photographs available for San Felix.

Smithsonian Sample Collections Database

The following 3 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections. Catalog number links will open a window with more information.

Catalog Number Sample Description
NMNH 99652 Trachyte
NMNH 99653 Hyalo trachyte
NMNH 99654 Nepheline basanite

Affiliated Sites

Large Eruptions of San Felix 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).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.