Photograph by B. Edwards
Photograph by B. Edwards
Tuya Butte, the flat-topped mountain in the center right of the photograph, is one of six subglacial volcanoes cluster close to Tuya Lake (center of picture), in northcentral British Columbia. The base of the volcano comprises pillow lavas and hyaloclastite, indicating that the volcano formed either beneath ice or with a large lake. The flat top comprises subaerially-erupted lava flows. Some of the other volcanoes in the area include South Tuya, Ash Mountain, and Mathew's Tuya. The volcanoes in the Tuya region of northwestern British Columbia form part of the northern Cordilleran volcanic province of northwestern Canada (Edwards & Russell 2000).
-summary by Ben Edwards, Grand Valley State University, MI
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