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Lassen Volcanic Center   »  Eruptive History

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Lassen Volcanic Center

Start Date: 1914  May 30  Stop Date: 1917 Jun 29 

Dating Technique: Historical Records

Volcanic Explosivity Index (VEI):  3

Area of Activity: Lassen Peak

Eruptive Characteristics:
    Central vent eruption
    Explosive eruption
    Pyroclastic flow(s)
    Phreatic explosion(s)
    Lava flow(s)
    Lava dome extrusion
    Damage (land, property, etc.)
    Mudflow(s) (lahars)
    Evacuation

Start Date: 1850  Aug  Stop Date: 1851 

Eruption DISCREDITED

Area of Activity: (Cinder Cone eruption predates 1850)
Start Date: 1666 (?)  Stop Date: Unknown

Dating Technique: Dendrochronology (tree rings)

Volcanic Explosivity Index (VEI):  3?

Area of Activity: Cinder Cone

Eruptive Characteristics:
    Central vent eruption
    Flank (excentric) vent
    Explosive eruption
    Lava flow(s)

Start Date: 1650 (?) 

Eruption is UNCERTAIN

Area of Activity: Chaos Crags

Eruptive Characteristics:
    Flank (excentric) vent
    Phreatic explosion(s)  (?)
    Lava dome extrusion  (?)
    Debris avalanche(s)

Start Date: 980 AD ± 300 years Stop Date: Unknown

Dating Technique: Radiocarbon (corrected)

Area of Activity: Chaos Crags

Eruptive Characteristics:
    Flank (excentric) vent
    Explosive eruption
    Pyroclastic flow(s)
    Lava dome extrusion

Start Date: 880 AD ± 300 years Stop Date: Unknown

Dating Technique: Radiocarbon (corrected)

Area of Activity: Chaos Crags

Eruptive Characteristics:
    Flank (excentric) vent
    Explosive eruption
    Pyroclastic flow(s)
    Lava dome extrusion

Start Date: 800 AD ± 300 years Stop Date: Unknown

Dating Technique: Radiocarbon (corrected)

Area of Activity: Chaos Crags

Eruptive Characteristics:
    Flank (excentric) vent
    Explosive eruption
    Pyroclastic flow(s)
    Lava dome extrusion

Global Volcanism Program — Department of Mineral Sciences — National Museum of Natural History — Smithsonian Institution

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