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    Mount Iliamna

    Stratovolcano · 3,053 m · United States of America

    Mount Iliamna
    Photo: Game McGimsey (U.S. Geological Survey, Alaska Volcano Observatory) · Public domain · Wikimedia Commons

    Mount Iliamna sits on the North American Plate, in a subduction zone. 15 eruptions are known since the end of the last ice age, the most recent in 1876.

    Elevation
    3,053 m
    Type
    Stratovolcano
    Tectonic Setting
    Subduction zone, continental crust
    Dominant Rock
    Andesite / Basaltic Andesite
    Plate
    North American Plate
    Country
    United States of America
    Last Eruption
    1876
    Known Eruptions (Holocene)
    15
    Max. Explosivity (VEI)
    4

    Eruption Timeline

    Each bar is an eruption; its height shows its explosivity (VEI 0 to 8).

    5,050 BCE · VEI 42,050 BCE · VEI 4450 BCE1650176817781786179318431867 · VEI 21876 · VEI 31933194719521953 · VEI 2 VEI 2VEI 4VEI 6 5,050 BCE1500180019002000

    Eruption Uncertain Date

    Sources : Global Volcanism Program, 2026. Volcanoes of the World (v. 5.4.0; 7 Aug 2026), Smithsonian Institution, doi:10.5479/si.GVP.VOTW5-2026.5.4 (volcano.si.edu) · NOAA NCEI · USGS · Wikidata