Photograph by B. Edwards
Photograph by B. Edwards
South Tuya, shown above in a view looking to the south, is one of six subglacial volcanoes cluster close to Tuya Lake, in northcentral British Columbia. Some of the other volcanoes in the area include Tuya Butte, Ash Mountain, and Mathew's Tuya. 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. The volcanoes in the Tuya region of northwestern British Columbia form part of the northern Cordilleran volcanic province of northwestern Canada (Edwards & Russell 2000).
-Ben Edwards, Grand Valley State University, MI
Allen, C.C., Jercinovic, M.J. and Allen, J.S.B., 1982. Subglacial volcanism in north-central British Columbia and Iceland. Journal of Geology, 90, 699-715.
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