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Mathews Tuya is a tuya in northcentral British Columbia.[1] It is one of the six tuyas close to Tuya Lake. It has been partly glaciated and Ar-Ar geochronology shows that is it about 730,000 years old. It mainly comprises palagonitized tephra (tuff, lapilli tuff, tuff-breccia) but also has a few dykes and jointed lava flows on its flanks. The top still has flat-lying lava flows erupted after the tephra pile grew above the surface of the enclosing lake. The other volcanoes in the area include Tuya Butte, South Tuya and Ash Mountain. The volcanoes in the region form part of the Northern Cordilleran Volcanic Province.

This article relies largely or entirely on a single source. (December 2010)

Mathews Tuya
Highest point
Elevation	1,775 m (5,823 ft)
Coordinates	59°11′43″N 130°25′58″W
Geography
Location	British Columbia, Canada
District	Cassiar Land District
Parent range	Tuya Range
Geology
Age of rock	Pleistocene
Mountain type	Subglacial mound
Last eruption	Pleistocene

See also

• List of volcanoes in Canada
• List of Northern Cordilleran volcanoes
• Volcanism of Canada
• Volcanism of Western Canada

References

Edwards, B. R., Russell, J. K. and Simpson, K. 2011. Volcanology and petrology of Mathews Tuya, northern British Columbia: glaciovolcanic constraints on interpretations of the 0.730 Ma Cordilleran paleoclimate. Bulletin of Volcanology. 73:479-496. DOI 10.1007/s00445-010-0418-z

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