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Fueguino

Lava dome(s) in Chile

Last Eruption: 1820

Key Facts

Elevation

157 m (515 ft)

Type

Lava dome(s)

Location

-54.970°, -70.262°

Region

Austral Andean Volcanic Arc

Rock Type

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone

Location

Loading map...

Overview

A group of andesitic, columnar-jointed lava domes and pyroclastic cones up to 150 m high on Isla Cook mark the southernmost Holocene volcanoes of the Andes. The volcanoes, known as Volcán Cook or Volcán Fueguino, occupy a broad peninsula forming the SE end of the island. One of the cones, S of Bahía del Volcán, contains a 150-m-wide crater with a small lake.

The lava domes and pyroclastic cones, possibly emplaced along N-S-trending faults, are unaffected by glacial erosion that scoured the underlying plutonic rocks. Passing navigators observed possible eruptive activity in the direction of Cook in 1712 and the eruption of incandescent ejecta in 1820.

Volcanic Hazards & Risk Assessment

Primary Hazards

    Risk Level

    Population at RiskModerate
    Infrastructure RiskModerate
    Aviation RiskSignificant

    Geological Composition & Structure

    Rock Types

    Primary
    Andesite / Basaltic Andesite
    Silica Content
    Intermediate (57-63% SiO₂)

    Tectonic Setting

    Subduction zone
    Formed by oceanic plate subduction, typically producing explosive eruptions due to water-rich magmas.

    Age & Formation

    Epoch
    Holocene
    Evidence
    Eruption Observed

    Eruption Statistics & Analysis

    MetricValueGlobal RankingSignificance
    Total Recorded EruptionsUnknownLowModerately active volcano
    Maximum VEIVEI UnknownMinorLocal impact potential
    Recent Activity206 years agoHistoricalHistorically active

    Monitoring & Alert Status

    Monitoring Networks

    Global Volcanism Program
    International eruption database

    Current Status

    Normal
    No recent activity. Routine monitoring continues.

    Nearby Volcanoes in South America Volcanic Regions

    Regional Volcanic Activity
    The South America Volcanic Regions contains multiple active volcanic systems. Cross-regional magma interactions and tectonic stresses can influence eruption patterns across the entire arc. Monitor regional seismic activity and volcanic alerts.

    Quick Info

    • •Smithsonian ID: 358090
    • •Evidence: Eruption Observed
    • •Epoch: Holocene

    About the Photo

    A young lava dome on Isla Cook is viewed from the east. This group of andesitic lava domes and pyroclastic cones, known as Volcán Feuguino or Volcán Cook, mark the southernmost Holocene volcanoes of the Andes. They occupy a broad peninsula forming the SE end of Isla Cook and are unaffected by glacial erosion that scoured the underlying plutonic rocks. Passing navigators observed possible eruptive activity in the direction of Cook in 1712 and the eruption of incandescent ejecta in 1820.

    Photo by Scott Dreher, 2005 (University of Durham).

    Authority Sources

    Smithsonian GVP
    Official volcano database
    USGS Volcano Hazards
    U.S. Geological Survey
    Global Volcanism Program
    Smithsonian Institution

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    Basic Information

    This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.