Tseax Cone (/ˈsiːæks/SEE-aks) is a small volcano in the Nass Ranges of the Hazelton Mountains in northwestern British Columbia, Canada. It has an elevation of 609 metres (1,998 feet) and lies within an east–west valley through which a tributary of the Tseax River flows. The volcano consists of two nested structures and was the source of four lava flows that descended into neighbouring valleys. A secondary eruptive centre lies just north of Tseax Cone on the opposite side of a lava-dammed lake. It probably formed simultaneously with Tseax Cone but the timing of volcanism at the two centres is not precisely known; they were both active sometime in the last 800 years. The area has been designated as a provincial park to protect these features.
Tseax Cone lies within an ecoregion characterized by mountainous terrain and several streams. Rainforests occur at the volcano as well as several species of mammals. Lichens and mosses cover most of the Tseax Cone lava flows, although rainforests and waterbodies also obscure them. The volcano is the subject of legends told by the local indigenous people. They describe the destruction of villages along the Nass River and the death of several people from inhaling fumes. Renewed eruptions at Tseax Cone could start wildfires and block local streams with lava flows. The volcano and lava flows can be accessed via provincial highways and backcountry roads.
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^ abc"Tseax Cone". BC Geographical Names. Retrieved 2021-11-17.
^"Ksi Sii Aks". BC Geographical Names. Archived from the original on 2021-11-27. Retrieved 2022-03-29.
^Le Moigne et al. 2020, p. 363.
^"Lava beds and other reasons to love northern British Columbia". Postmedia Network. 2019-11-06. Archived from the original on 2021-04-21. Retrieved 2022-01-12.
^ abcdWilliams-Jones et al. 2020, p. 1238.
^"Tseax Cone". Catalogue of Canadian volcanoes. Natural Resources Canada. 2005-08-19. Archived from the original on 2008-01-11. Retrieved 2022-01-12.
^Slaymaker, Olav (2017). Landscapes and Landforms of Western Canada. Springer International Publishing. p. 52. ISBN 978-3-319-44593-9.
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TseaxCone (/ˈsiːæks/ SEE-aks) is a small volcano in the Nass Ranges of the Hazelton Mountains in northwestern British Columbia, Canada. It has an elevation...
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was dammed by a 22.5 km (14.0 mi) long lava flow which came from the TseaxCone and destroyed the Nisga'a villages and caused the death of at least 2000...
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activity in Canada occurred at the TseaxCone in 1775, when a 22.5-kilometre-long (14.0 mi) lava flow traveled down the Tseax and Nass Rivers, destroying a...
formerly Tseax River /ˈsiːæks/) is a tributary of the Nass River in northwestern British Columbia, Canada. It is most notable as the namesake of TseaxCone, a...
4,173, and when, on the western side of the North American continent, TseaxCone erupts in the future British Columbia, as well as when a smallpox epidemic...
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