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    Volcano

    Cobb Segment

    Fissure vent · -2,100 m · Canada

    Cobb Segment sits on the Juan de Fuca Plate, in a rift zone. 1 eruption is known since the end of the last ice age, the most recent in 1,180 BCE.

    Elevation
    -2,100 m
    Type
    Fissure vent
    Tectonic Setting
    Rift zone, oceanic crust
    Dominant Rock
    Basalt / Picro-Basalt
    Plate
    Juan de Fuca Plate
    Country
    Canada
    Last Eruption
    1,180 BCE
    Known Eruptions (Holocene)
    1

    Eruption Timeline

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

    1,180 BCE VEI 2VEI 4VEI 6 1,180 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