Caribou Tuya
| Caribou Tuya | |
|---|---|
  Caribou Tuya Location of Caribou Tuya in northern British Columbia
| |
| Highest point | |
| Elevation | 1,770 m (5,810 ft) |
| Coordinates | 59°14′11″N 130°33′45″W |
| Geography | |
| Location | British Columbia, Canada |
| District | Cassiar Land District |
| Parent range | Tuya Range |
| Topo map | NTS 104O2 Tuya Lake |
| Geology | |
| Mountain type | Subglacial mound |
| Volcanic arc/belt | Northern Cordilleran Volcanic Province |
| Last eruption | Pleistocene |
Caribou Tuya is a basaltic subglacial mound in far northwestern British Columbia that began eruptive activity under glacial ice during the Fraser glaciation (25 to 10 ka). Like Ash Mountain and South Tuya, sections of the subglacial mound reveal a consistent stratigraphic progression from pillow lavas to hyaloclastite deposits from the base upward. Locally the sections are capped by subaerial basaltic lava flows. Samples of the glassy pillow basalts and hyaloclastites along with crystalline basalt flows were collected at Caribou Tuya. The volcano is believed to have formed and last erupted during the Pleistocene Epoch.