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Iskut-Unuk River Cones

Photo of this volcano
  • Canada
  • Canada and Western USA
  • Pyroclastic cone(s)
  • 1800 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 56.58°N
  • 130.55°W

  • 1880 m
    6168 ft

  • 320090
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Iskut-Unuk River Cones.

The Global Volcanism Program has no Weekly Reports available for Iskut-Unuk River Cones.

The Global Volcanism Program has no Bulletin Reports available for Iskut-Unuk River Cones.

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 8 Holocene eruptive periods.

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1904 ] [ Unknown ] Uncertain     Lava Fork
1800 (?) Unknown Confirmed   Radiocarbon (uncorrected) Lava Fork
1590 ± 50 years Unknown Confirmed   Radiocarbon (uncorrected) Lava Fork
0620 BCE ± 150 years Unknown Confirmed   Radiocarbon (uncorrected) Iskut River
1830 BCE ± 300 years Unknown Confirmed   Radiocarbon (uncorrected) Iskut River
3450 BCE ± 150 years Unknown Confirmed   Radiocarbon (uncorrected) Iskut River
4700 BCE ± 300 years Unknown Confirmed   Radiocarbon (uncorrected) Iskut River
6830 BCE ± 150 years Unknown Confirmed   Radiocarbon (uncorrected) Iskut River
Deformation History

There is no Deformation History data available for Iskut-Unuk River Cones.

Emission History

There is no Emissions History data available for Iskut-Unuk River Cones.

Photo Gallery

Shallow ponds dot the surface of valley-filling lava flows of the Iskut-Unuk volcanic field. The flows traveled south 5 km where they crossed the border into Alaska and dammed the Blue River, forming several small lakes and traveling a total of approximately 22 km. The Iskut-Unuk River Cone Group consists of eight small basaltic centers at the southern end of the Stikine volcanic belt that range in age from about 70,000 to only a few hundred years old and form one of the youngest volcanic fields in Canada.

Photo by Ben Edwards, 1997 (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: Canada, United States
Publisher: DMA Aerospace Center
Country: United States, Canada
Year: 1989
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of Canada, United States

Title: Telegraph Creek, Cassiar Dist., British Columbia
Publisher: Canada Map Office Dept. EMR
Country: Canada
Year: 1989
Series: A502
Map Type: Topographic
Scale: 1:250,000
Map of Telegraph Creek, Cassiar Dist., British Columbia

Title: Iskut River
Publisher: Canada Map Office Dept. EMR
Country: Canada, US- AK
Year: 1983
Series: A502
Map Type: Topographic
Scale: 1:250,000
Map of Iskut River

Title: British Columbia Geol Highway Map (4)
Publisher: Ministry of Energy, Mines & Petroleum Resources
Country: Canada
Year: 1981
Series: BC Geol Maps
Map Type: Geology
Scale: 1:2,500,000
Map of British Columbia Geol Highway Map (4)

Title: Ketchikan
Publisher: US Geological Survey
Country: United States
Year: 1976
Series: AK Topo 250
Map Type: Topographic
Scale: 1:250,000
Map of Ketchikan
Smithsonian Sample Collections Database

There are no samples for Iskut-Unuk River Cones in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

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