Edziza

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 57.72°N
  • 130.63°W

  • 2786 m
    9138 ft

  • 320060
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Edziza.

The Global Volcanism Program has no Weekly Reports available for Edziza.

The Global Volcanism Program has no Bulletin Reports available for Edziza.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0950 ± 6000 years Unknown Confirmed 3 Fission track SW flank of Ice Peak
0610 ± 150 years Unknown Confirmed   Radiocarbon (uncorrected) NNE flank (Williams Cone)
0750 BCE ± 100 years Unknown Confirmed   Tephrochronology
6520 BCE ± 200 years Unknown Confirmed   Radiocarbon (uncorrected) North flank?

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Photo Gallery


The Mount Edziza complex, seen here from the east along the Cassiar-Stewart Highway, is part of a large volcanic plateau that is the centerpiece of Mount Ediziza Provincial Park, one of the largest in British Columbia. The complex was constructed over the past 7.5 million years during five magmatic cycles beginning with eruption of alkali basalts and ending with felsic and basaltic eruptions as late about 1000 years ago. Numerous ice-contact features and products of subglacial eruptions are found in the Mount Edziza complex.

Photo by Ben Edwards, 1995 (Dickinson College, Pennsylvania).
See title for photo information.
The central ice-covered summit complex of Mount Edziza is seen here from the SW rising above the Kitsu and Big Raven plateaus. Late-Tertiary lava flows form the foreground. The low conical hills at the base of the icecap are Quaternary volcanic cones. Mount Edziza contains a 2-km-wide, ice-filled caldera that truncates its summit, and numerous ice-contact features and products of subglacial eruptions are found. The complex contains numerous Holocene pyroclastic cones, some of which are younger than about 1300 years.

Photo by Jack Souther, 1992 (Geological Survey of Canada).
See title for photo information.
The snow-covered mountains at the right-center, lying between the Mess Creek (left) and Little Iskut River (right) drainages, are in the Spectrum Range, one of four large composite volcanoes making up the Mount Edziza-Spectrum Range volcanic complex. Holocene pyroclastic cones and lava flows are found on the NW and SW sides of the Spectrum Range. The Mount Edziza complex appears at the top of this image (with north to the upper left), west of snow-covered Nuttlude and Kakiddi lakes. Elongated Kinaskan Lake is at the upper right.

NASA Space Shuttle image STS039-90-110, 1991 (http://eol.jsc.nasa.gov/).
See title for photo information.
Cinder cones, such as Eve Cone on the flanks of Edziza volcano, are formed by the explosive ejection of fragmental material, which accumulates around the vent. This symmetrical cone is part of the Desolation Lava Field on the northern flank of Edziza and is one of the youngest features of the volcano. Basaltic lava flows issued from the base of the cone, which rises about 150 m and has a symmetrical, 45-m-deep crater.

Photo by Ben Edwards, 1995 (Dickinson College, Pennsylvania).
See title for photo information.

Smithsonian Sample Collections Database


There are no samples for Edziza in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites