• Official Name: Herbert Island
  • Seismically Monitored: No
  • Color Code: UNASSIGNED
  • Alert Level: UNASSIGNED
  • Elevation: 1290m (4232ft)
  • Latitude: 52.741
  • Longitude: -170.113
  • Smithsonian VNum: 311220
  • Pronunciation:
  • Nearby Towns:
    • Nikolski 54 mi (86 km) NE
    • Unalaska 167 mi (269 km) NE
    • Atka 176 mi (283 km) SW
    • Akutan 203 mi (327 km) NE
    • Saint George 268 mi (431 km) NE


From Wood and Kienle (1990) [1] : "Herbert is a classic stratovolcano with a 2.1-km-wide caldera, which the topographic map indicates is breached to the northwest. Radar images do not show the breach. No geologic studies have been published on this volcano. A grab sample from the tip of the island's southwest point is an andesite (59% SiO2, with 0.82% K2O)."

Name Origin

Herbert Island was named by the U.S. Navy Hydrographic Office in 1894 for Hilary Abner Herbert, 1834-1919, Secretary of the Navy (Orth, 1971).

References Cited

[1] Volcanoes of North America: United States and Canada, 1990

Wood, C. A., and Kienle, Juergen, (eds.), 1990, Volcanoes of North America: United States and Canada: New York, Cambridge University Press, 354 p.

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