Fourpeaked volcano
Stratovolcano 2105 m / 6,906 ft
United States, Alaska Peninsula, 58.77°N / -153.67°W
Current status: dormant (1 out of 5)
Fourpeaked volcano books
United States, Alaska Peninsula, 58.77°N / -153.67°W
Current status: dormant (1 out of 5)
Fourpeaked volcano books
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Typical eruption style: unspecified
Fourpeaked volcano eruptions: 2006
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Fourpeaked volcano eruptions: 2006
| Time | Mag. / Depth | Distance | Location |
| Sat, 12 Aug | |||
| Sat, 12 Aug 02:55 UTC | M 1.6 / 7.8 km | 5 km | - Kodiak Island region, Alaska |
| Sat, 5 Aug | |||
| Sat, 5 Aug 04:56 UTC | M 2.9 / 91.7 km | 10 km | - 122km SSE of Old Iliamna, Alaska |
| Thu, 3 Aug | |||
| Thu, 3 Aug 15:13 UTC | M 2.1 / 111.4 km | 37 km | - 92km SSE of Old Iliamna, Alaska |
| Wed, 2 Aug | |||
| Wed, 2 Aug 19:38 UTC | M 2.0 | 16 km | - 113km N of Larsen Bay, Alaska |
| Sun, 30 Jul | |||
| Sun, 30 Jul 04:27 UTC | M 2.1 / 110.3 km | 29 km | - 103km SE of Old Iliamna, Alaska |
Background:
Poorly known Fourpeaked volcano in NE Katmai National Park consists of isolated outcrops surrounded by the Fourpeaked Glacier, which descends eastward almost to the Shelikof Strait. The orientation of andesitic lava flows and extensive hydrothermal alteration of rocks near the present 2105-m-high summit suggest that it probably marks the vent of Fourpeaked volcano. Eruptive activity during the Holocene had not been confirmed prior to the first historical eruption of Fourpeaked in September 2006. A N-trending fissure extending 1 km from the summit produced minor ashfall.---
Smithsonian / GVP volcano information
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