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    Atka Volcanic Complex

    Stratovolcano · 1,518 m · United States of America

    Atka Volcanic Complex
    Photo: Game McGimsey (Alaska Volcano Observatory / U.S. Geological Survey) · Public domain · Wikimedia Commons

    Atka Volcanic Complex sits on the North American Plate, in a subduction zone. 18 eruptions are known since the end of the last ice age, the most recent in 2025.

    Elevation
    1,518 m
    Type
    Stratovolcano
    Tectonic Setting
    Subduction zone
    Dominant Rock
    Basalt / Picro-Basalt
    Plate
    North American Plate
    Country
    United States of America
    Last Eruption
    2025
    Known Eruptions (Holocene)
    18
    Max. Explosivity (VEI)
    3

    Eruption Timeline

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

    1812 · VEI 3182918441907195119531973 · VEI 019761986 · VEI 11987 · VEI 21995 · VEI 11998 · VEI 32002 · VEI 12004 · VEI 12005 · VEI 12006 · VEI 12024 · VEI 12025 · VEI 1 VEI 2VEI 4VEI 6 14991500180019002000

    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