Iskut volcanic field

The Iskut volcanic field spans the Boundary Ranges of the Coast Mountains along and near the Alaska-British Columbia border, with volcanoes in British Columbia and some lava flows reaching Alaska. It preserves a long record of volcanism, from the oldest known centres at Little Bear Mountain, about 146,000 years old, and Hoodoo Mountain, about 85,000 years old, to several younger centres formed within the last 70,000 years. Most of the field is mafic, while Hoodoo Mountain is distinct for its peralkaline rocks. Lava Fork erupted around 1800, and a reported 1904 eruption there remains uncertain. In Tlingit, the area is called Séxkhulé and is linked to the story of Aan Galakhú, the World Flood.

British Columbia · Canada