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Tseax River Cone

Photo of this volcano
  • Canada
  • Canada and Western USA
  • Pyroclastic cone
  • 1690 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 55.12°N
  • 128.9°W

  • 609 m
    1998 ft

  • 320100
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Tseax River Cone.

The Global Volcanism Program has no Weekly Reports available for Tseax River Cone.

The Global Volcanism Program has no Bulletin Reports available for Tseax River Cone.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

There is data available for 2 Holocene eruptive periods.

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1690 ± 150 years Unknown Confirmed   Radiocarbon (corrected)
1330 ± 75 years Unknown Confirmed   Radiocarbon (uncorrected)
Deformation History

There is no Deformation History data available for Tseax River Cone.

Emission History

There is no Emissions History data available for Tseax River Cone.

Photo Gallery

The 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. 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 flows are the prime attraction of the Nisga'a Memorial Lava Beds Provincial Park. The volcanic field erupted at least twice (625 and 220 radiocarbon years ago), and activity was noted in tribal legends.

Photo by Ben Edwards (Dickinson College, Pennsylvania).
See title for photo information.
GVP Map Holdings

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.

Title: Nass River
Publisher: Canada Map Office Dept. EMR
Country: Canada, US- AK
Year: 1989
Series: A502
Map Type: Topographic
Scale: 1:250,000
Map of Nass River

Title: Canada, United States
Publisher: DMA Aerospace Center
Country: Canada, US- AK WA
Year: 1987
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of Canada, United States

Title: British Columbia's Coast: The Canadian Inside Passage
Publisher: Alaska Geographic Society
Country: Canada
Year: 1986
Map Type: Geographic
Scale: 1:2,000,000
Map of British Columbia's Coast: The Canadian Inside Passage
Smithsonian Sample Collections Database

There are no samples for Tseax River Cone in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites