Suemez Island


  • Seismically Monitored: No
  • Color Code: UNASSIGNED
  • Alert Level: UNASSIGNED
  • Elevation: m (0ft)
  • Latitude: 55.2268
  • Longitude: -133.4032
  • Smithsonian VNum:
  • Nearby Towns:
    • Craig 20 mi (32 km) NE
    • Hydaburg 23 mi (37 km) SE
    • Klawock 26 mi (41 km) NE
    • Hollis 34 mi (55 km) NE
    • Kasaan 45 mi (72 km) NE


Devonian and Silurian sedimentary packages on Suemez Island are overlain by Quaternary rhyolite and trachyte vents, domes, and flows. Many of the vents are located close to Cape Felix, on the southwest portion of Suemez Island. (Kate Bull, personal communication, 2009).

Name Origin

"Suemez Island volcanic area" is an informal name, after Suemez Island, where the vents are located. "Suemez Island" is a Spanish name given in 1775-79 by Don Juan de la Bodega y Quadra and Francisco Antonio Maurelle as "Isla Suemez." This island was shows as "Guemes" by D.A. Galiano (1802) (Orth, 1971).

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