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News
Saturday, Nov 11, 2006

Low-level earthquake activity continues at Fourpeaked volcano. Web camera views this past week show a typical steam plume rising several hundred meters above the summit.

... [more]
Aerialphoto of the summit of Fourpeaked volcano on an overflight on the 24th of Sep 2006 showing several steaming vents on its summit. (Photo courtesy: Cyrus Read, AVO/USGS)
Saturday, Feb 26, 2005

The first known historic eruption of Fourpeaked volcano on the Alaska peninsula is taking its course. Several vents emitting gasses and ash have appeared on the glacier-topped volcano and are slowly melting the ice cap.

... [more]
 

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
Typical eruption style: unspecified
Fourpeaked volcano eruptions: 2006 
TimeMag. / DepthDistanceLocation
Sun, 26 Mar
Sun, 26 Mar 04:03 UTCM 1.3 / 82.3 km7 km- 124km N of Larsen Bay, Alaska
Wed, 15 Mar
Wed, 15 Mar 09:08 UTCM 2.2 / 9 km4 km- 129km SE of Old Iliamna, Alaska
Sun, 12 Mar
Sun, 12 Mar 07:24 UTCM 1.5 / 7.1 km6 km- 125km SE of Old Iliamna, Alaska
Sat, 11 Mar
Sat, 11 Mar 21:54 UTCM 1.8 / 5 km7 km- 123km NNW of Kodiak Station, Alaska
Sat, 11 Mar 20:20 UTCM 2.2 / 5.8 km8 km- 124km NNW of Kodiak Station, Alaska
View all recent quakes

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.
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Smithsonian / GVP volcano information


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