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    San Francisco Volcanic Field

    Volcanic field · 3,850 m · United States of America

    San Francisco Volcanic Field
    Photo: NASA Earth Observatory images by Jesse Allen, using Landsat data · Public domain · Wikimedia Commons

    San Francisco Volcanic Field sits on the North American Plate, in a rift zone. 1 eruption is known since the end of the last ice age, the most recent in 1075.

    Elevation
    3,850 m
    Type
    Volcanic field
    Tectonic Setting
    Rift zone, continental crust
    Dominant Rock
    Basalt / Picro-Basalt
    Plate
    North American Plate
    Country
    United States of America
    Last Eruption
    1075
    Known Eruptions (Holocene)
    1
    Max. Explosivity (VEI)
    4

    Nearby Cities

    Cities of more than 20,000 people within 100 km. At least 64,000 people live in those within 30 km.

    Eruption Timeline

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

    1075 · VEI 4 VEI 2VEI 4VEI 6 10751500180019002000

    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