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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.
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.
Typical eruption style
: unspecifiedFourpeaked volcano eruptions
View all recent quakes
|Time||Mag. / Depth||Distance||Location|
|Sun, 15 Apr|
|Sun, 15 Apr 17:11 UTC||M 1.8 / 4.2 km||12 km||- 115km SE of Old Iliamna, Alaska|
|Sun, 15 Apr 04:20 UTC||M 1.3 / 4.3 km||12 km||- 116km SE of Old Iliamna, Alaska|
|Fri, 13 Apr|
|Fri, 13 Apr 05:54 UTC||M 1.7 / 122.8 km||39 km||- 96km SSE of Old Iliamna, Alaska|
|Tue, 10 Apr|
|Tue, 10 Apr 05:25 UTC||M 2.4 / 84.7 km||11 km||- 112km N of Larsen Bay, Alaska|
|Mon, 9 Apr|
|Mon, 9 Apr 21:07 UTC||M 2.3 / 90.7 km||6 km||- 124km N of Larsen Bay, Alaska|
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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