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Herbert Island

Herbert

Stratovolcano · United States · 1280m

Herbert is a cone containing a 2-km-wide summit caldera that opens to NW. This 23 June 1987 view from the WSW shows a small plume originating from Cleveland in background, with darkened slopes from ashfall produced during an eruption that began on 19 June.
Herbert is a cone containing a 2-km-wide summit caldera that opens to NW. This 23 June 1987 view from the WSW shows a small plume originating from Cleveland in background, with darkened slopes from ashfall produced during an eruption that began on 19 June. · Photo: Photo by Harold Wilson (Peninsula Airways), 1987 (courtesy of John Reeder, Alaska Div. Geology Geophysical Surveys). · Wikimedia Commons
Type
Stratovolcano
Country
United States
Region
North America Volcanic Regions / Aleutian Ridge Volcanic Arc
Elevation
1280m
Coordinates
52.742, -170.111
Last eruption
Unknown
Tectonic setting
Subduction zone / Intermediate crust (15-25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

The 10-km-wide Herbert Island, the SW-most of the Islands of the Four Mountains group, lies across a strait SW of Mount Cleveland. This symmetrical stratovolcano has a summit truncated by a 2-km-wide caldera breached to NW. No historical eruptions have been recorded, and no geological studies have been published.

Eruption history

Detailed timeline

No eruption records available.

External links

⚠ For reference only. Not for emergency response.