Spectrum Range

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 57.43°N
  • 130.68°W

  • 2430 m
    7970 ft

  • 320070
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Spectrum Range.

The Global Volcanism Program has no Weekly Reports available for Spectrum Range.

The Global Volcanism Program has no Bulletin Reports available for Spectrum Range.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

2430 m / 7970 ft


Volcano Types

Lava dome(s)
Pyroclastic cone(s)

Rock Types

Trachyte / Trachyandesite
Trachybasalt / Tephrite Basanite
Basalt / Picro-Basalt

Tectonic Setting

Continental crust (> 25 km)


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

The Spectrum Range, south of Mount Edziza, is one of four large composite volcanoes that make up the Mount Edziza-Spectrum Range volcanic complex. A predominately rhyolitic lava dome complex overlies a basal basaltic shield volcano in the Spectrum Range, named for its extensive colorful solfataric alteration. The Pliocene Spectrum Range center contains Pleistocene subglacial and subaerial cones on the SW flank and Holocene pyroclastic cones and lava flows on the NW and SW sides. The Mess Lake Lava Field on the NW consists of young lava flows and tephra from three pyroclastic cones, including The Ash Pit, which may be the youngest volcanic feature of the Mount Edziza-Spectrum Range complex.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

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.

Souther J G, 1973. Cordilleran volcanic project Spectrum Range. Geol Surv Can Pap, 73-1: 46-48.

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

Souther J G, Lambert M B, 1972. Volcanic rocks of the northern Canadian Cordillera. 24th Internatl Geol Cong, Montreal, Guidebook, Sec 2: 1-54.

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

The Global Volcanism Program is not aware of any Holocene eruptions from Spectrum Range. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Spectrum Range page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

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.


Feature Name Feature Type Elevation Latitude Longitude
Ash Pit, the Cone 1580 m 57° 27' 0" N 130° 47' 0" W
Exile Hill Cone 1890 m 57° 23' 0" N 130° 49' 0" W
Little Iskut Shield volcano 57° 28' 0" N 130° 33' 0" W
Mess Lake Lava Field Vent 2130 m 57° 28' 0" N 130° 45' 0" W
Nahto Cone 1670 m 57° 19' 0" N 130° 49' 0" W
Outcast Hill Cone 1800 m 57° 24' 0" N 130° 46' 0" W
Tadekho Hill Cone 1860 m 57° 21' 0" N 130° 47' 0" W
Thaw Hill Cone 1740 m 57° 17' 0" N 130° 43' 0" W
Wetalth Ridge Cone 1830 m 57° 19' 0" N 130° 47' 0" W
Yedo Peak Cone 2240 m 57° 23' 0" N 130° 41' 0" W


Feature Name Feature Type Elevation Latitude Longitude
Source Hill Fissure vent 1630 m 57° 17' 0" N 130° 49' 0" W


Feature Name Feature Type Elevation Latitude Longitude
Mess Creek Hot Spring Hot Spring 760 m 57° 24' 0" N 130° 55' 0" W
Mess Lake Hot Springs Hot Spring 760 m 57° 28' 0" N 130° 52' 0" W

Photo Gallery

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/).

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Spectrum Range Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.