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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Tseax River Cone
The Tseax River scoria cones (Aiyansh volcano) at the southern end of the Stikine volcanic belt have been the site of some of the youngest volcanic eruptions in Canada. This photo shows a tumulus in the middle of a broad lava plain in the Nass River valley produced by the Tseax River flow, which traveled 22.5 km. The volcanic field has erupted at least twice (625 and 220 radiocarbon years ago), and activity was recorded in tribal legends. Photo by Ben Edwards (Dickinson College, Pennsylvania).
Volcano Number:
320100
Volcano Name:
Tseax River Cone
Country:
Canada
Volcano Type:
Pyroclastic cone
Last Eruption:
1690 CE
Elevation:
612m
Tectonic Setting:
Intraplate / Continental crust (> 25 km)
Pop. within 30km:
928
Pop. within 100km:
23623
Latitude:
55.1109
Longitude:
-128.8991
Details
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The basaltic Tseax River cinder cones (Aiyansh volcano) at the southern end of the Stikine volcanic belt have been the site of some of the youngest volcanic eruptions in Canada. Nested cinder cones lying along a tributary of the Nass River were the source of a lava flow that traveled into the Tseax River, damming it and forming Lava Lake. The flow subsequently traveled 11 km N to the Nass River, where it filled the flat valley floor for an additional 10 km. Native legends of the Nisga'a People tell of a prolonged period of disruption by the volcano, including the destruction of their village on the Nass River and the death of some people from "poison smoke." The vent was active at least twice (625 and 220 radiocarbon years ago) and other remnants of lava flows exist in the area, which was designated the Nisga'a Memorial Lava Beds Provincial Park in 1993 (Hickson and Edwards, 2001).
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
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Data from the Earthchem Library
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Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
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Data from UNAVCO
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Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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