Edziza

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  • Canada
  • Canada
  • Stratovolcano
  • 950 CE
  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 57.72°N
  • 130.63°W

  • 2786 m
    9138 ft

  • 320060
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

There are no activity reports for Edziza.



 Available Weekly Reports

There are no Weekly Reports available for Edziza.

Summary of 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?

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Hickson C J, Edwards B R, 2001. Volcanoes and Volcanic Hazards in Canada. In; Brooks G R (ed) {A Synthesis of Geological Hazards in Canada}, Geol Surv Can Bull, 548: 1-248.

Hickson C J, Soos A, Wright R, 1994. Catalogue of Canadian volcanoes. Geol Surv Canada Open-File Rpt.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Souther J G, 1967. Cordilleran volcanic project. Geol Surv Can Pap, 68-1A: 42-43.

Souther J G, 1970. Volcanism and its relationship to recent crustal movements in the Canadian Cordillera. Can J Earth Sci, 7: 553-568.

Souther J G, 1992. The late Cenozoic Mount Edziza volcanic complex, British Columbia. Geol Surv Can Mem, 420: 1-320.

Souther J G, Symons D T A, 1974. Stratigraphy and paleomagnetism of Mount Edziza volcanic complex, northwestern British Columbia. Geol Surv Can Pap, 73-32: 1-48.

Wood C A, Kienle J (eds), 1990. Volcanoes of North America. Cambridge, England: Cambridge Univ Press, 354 p.

The composite felsic stratovolcano Mount Edziza and associated satellitic lava domes and pyroclastic cones were 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. The 7.5 million-year-old (Ma) Armadillo Peak stratovolcano at the south end of the complex is overlapped by the Ice Peak central volcano, which was formed during the early Pleistocene, and contains a caldera largely destroyed by glaciers. The Mount Edziza stratovolcano on the north was formed about 1.0-0.9 Ma. A 2-km-wide, ice-filled caldera truncates its summit; lava domes were subsequently emplaced around its periphery and lava lakes ponded within the caldera and overflowed its rim. Numerous ice-contact features and products of subglacial eruptions are found in the Mount Edziza complex. More than 30 Holocene pyroclastic cones, primarily of basaltic composition, are located on Mount Edziza and the adjacent Spectrum Range, some of which are younger than about 1300 years before present. Large areas of Holocene lava flows of the postglacial Big Raven Formation are located north of Mount Edziza, forming the Desolation Lava Field, and south and SW of Ice Peak, forming the Snowshoe Lava Field.