Mathews Tuya

Mathews Tuya is a volcanic mountain in north-central British Columbia and one of six tuyas near Tuya Lake. Formed when eruptions interacted with ice or meltwater, it is part of the Northern Cordilleran Volcanic Province and dates to about 730,000 years ago. The mountain has been partly glaciated, and its rocks preserve that unusual origin in palagonitized tephra such as tuff, lapilli tuff, and tuff breccia, along with a few dykes and jointed lava flows. Flat-lying lava flows on the summit erupted after the tephra pile rose above the lake surface. Mathews Tuya helps reveal ancient environmental conditions and glaciovolcanic activity in this distinctive volcanic landscape.

British Columbia · Canada