Tuya Volcanic Field

Photo of this volcano
Google Earth icon
  Google Earth Placemark
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 59.37°N
  • 130.58°W

  • 2123 m
    6963 ft

  • 320031
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Tuya Volcanic Field.

The Global Volcanism Program has no Weekly Reports available for Tuya Volcanic Field.

The Global Volcanism Program has no Bulletin Reports available for Tuya Volcanic Field.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

2123 m / 6963 ft


Volcano Types

Volcanic field

Rock Types

Basalt / Picro-Basalt

Tectonic Setting

Continental crust (> 25 km)


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

Geological Summary

A broad region dotted with formerly subglacial volcanic cones known as tuyas forms the Tuya volcanic field near Tuya Lake and a broad area to the north. Although tuyas, the products of Pleistocene subglacial eruptions, are perhaps more well-known in Iceland, these predominantly flat-topped basaltic table mountains derive their name from the Tuya region in the Cassiar Mountains and Tanzilla Plateau area of northern British Columbia. Tuya Butte itself, immediately north of Tuya Lake, has no summit crater or obvious vent, suggesting fissure-fed eruptions, although several indications suggest a vent location near a large cirque on the north face. Other tuyas lie in the High Tuya Lake, Iverson Creek, Rancheria River, and Klinkit Lake areas. Several small subaerial shield volcanoes, and postglacial lapilli cones and lava flows have been reported in this area. At least one of these, Grabrielse Cone near the headwaters of Iverson Creek, is of Holocene age.


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

Allen C C, Jercinovic M J, Allen J S B, 1982. Subglacial volcanism in north-central British Columbia and Iceland. J Geol, 90: 699-715.

Edwards B R, 2004. (pers. comm.).

Gabrielse H, 1969. Geology of Jenning River map-area. Geol Surv Can Pap, 68-55: 1-37.

Gabrielse H, Souther J G, 1962. Dease Lake, British Columbia. Geol Surv Can Map, 21-1962.

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..

Simpson K, Edwards B, Wetherell K, 2006. Documentation of a Holocene volcanic cone in the Tuya-Teslin volcanic field, northern British Columbia. Geol Surv Canada, Current Res, 2006-A1: 1-7.

Wetherell K, Edwards B, Simpson K, 2005. Preliminary results of field mapping, petrography, and GIS spatial analysis of the West Tuyu lava field, northwestern British Columbia. Geol Surv Canada, Current Res, 2005-A2: 1-10.

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 Tuya Volcanic Field. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Tuya Volcanic Field 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.


Tuya Butte Volcanic Field | Tuya Lake Volcanic Field


Feature Name Feature Type Elevation Latitude Longitude
Ash Mountain Tuya 2123 m 59° 16' 0" N 130° 30' 0" W
Blackfly Tuya Tuya 1373 m
Caribou Tuya Tuya 1770 m 59° 14' 0" N 130° 34' 0" W
Cottonwood Peak Cone 1640 m 59° 24' 0" N 130° 15' 0" W
Gabrielse Cone Pyroclastic cone 1600 m 59° 26' 30" N 130° 21' 0" W
Grizzly Butte Shield volcano 1411 m
High Tuya Lake Volcanic Field Volcanic field 2123 m 59° 15' 0" N 131° 31' 0" W
Iverson Creek Volcanic Field Volcanic field 2050 m 59° 30' 0" N 130° 17' 0" W
Josephine, Mount Cone 1717 m 59° 4' 0" N 130° 42' 0" W
Klinkit Creek Peak Tuya 1520 m 59° 28' 0" N 131° 17' 0" W
Klinkit Lake Volcanic Field Volcanic field 1580 m 59° 29' 0" N 131° 0' 0" W
Nome Lake South Tuya 1580 m 59° 28' 0" N 131° 17' 0" W
Rancheria River Volcanic Field Volcanic field 1711 m 59° 43' 0" N 130° 23' 0" W
Southern Tuya Tuya 1870 m 59° 13' 0" N 130° 30' 0" W
Toozaza Peak Cone 1700 m 59° 30' 0" N 130° 18' 0" W
Tuya #2 Tuya 1740 m 59° 12' 0" N 130° 26' 0" W
Tuya Butte Tuya 1670 m 59° 8' 0" N 130° 33' 0" W
Volcano Vent Shield volcano 1324 m
West Vent Shield volcano 1452 m

Photo Gallery

South Tuya, seen here from the north, is one of six subglacial volcanoes cluster close to Tuya Lake, in north-central British Columbia. The cone seen above comprises loose volcanic debris as well as dikes of basaltic rock intruded into the volcanic pile. The base of the volcano comprises pillow lavas and hyaloclastite, indicating that the volcano formed either beneath ice or with a large lake. Several small postglacial lapilli cones and lava flows have been reported in this area.

Photo by Ben Edwards, 2003 (Dickinson College, Pennsylvania).

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Tuya Volcanic Field 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.