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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Tlevak Strait-Suemez Island
Lava flows of the Tlevak Strait-Suemez Island volcanic group are located near Tlevak Strait (lower right) and on the SW end of Suemez Island. The largest deposits are located north of Trocadero Bay, the large embayment on the southern side of Suemez Island. Satellite image courtesy of Planet Labs Inc., 2019 (https://www.planet.com/).
Volcano Number:
315060
Volcano Name:
Tlevak Strait-Suemez Island
Country:
United States
Volcano Type:
Volcanic field
Elevation:
50m
Tectonic Setting:
Subduction zone / Continental crust (> 25 km)
Pop. within 30km:
1596
Pop. within 100km:
6552
Latitude:
55.25
Longitude:
-133.3
Details
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Scattered flat-lying lava flows with pahoehoe surfaces occur near Tlevak Strait and on the SW end of Suemez Island near the southern end of the panhandle of SE Alaska. Outcrops are located on western Prince of Wales Island, along Bobs Bay on the NW side of Dall Island, and at Trocadero Bay on Suemez Island. The flows overlie Paleozoic sedimentary rocks and are associated with Tertiary rhyolitic and dacitic lava flows on Suemez Island. The younger alkaline olivine basaltic flows were considered by Brew (in Wood and Kienle, 1990) to be of probable postglacial age. The Alaska Volcano Observatory notes that "Many of the vents are located close to Cape Felix, on the southwest portion of Suemez Island. (Kate Bull, personal communication, 2009)."
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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
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Data from IRIS FDSNWS
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