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Fourpeaked Mountain

Fourpeaked

Stratovolcano · United States · 2105m

Glaciated Fourpeaked volcano in NE Katmai National Park is seen here from the south with the Swikshak River in the foreground. Holocene eruptions at Fourpeaked had not been confirmed prior to its first recorded eruption in September 2006.
Glaciated Fourpeaked volcano in NE Katmai National Park is seen here from the south with the Swikshak River in the foreground. Holocene eruptions at Fourpeaked had not been confirmed prior to its first recorded eruption in September 2006. · Photo: Photo by Jennifer Adleman, 2006 (U S Geological Survey, Alaska Volcano Observatory). · Wikimedia Commons
Type
Stratovolcano
Country
United States
Region
North America Volcanic Regions / Alaska Peninsula Volcanic Arc
Elevation
2105m
Coordinates
58.770, -153.672
Last eruption
2006
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

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 summit suggest that it probably marks the vent area. Eruptive activity during the Holocene had not been confirmed prior to the first historical eruption in September 2006. A N-trending fissure extending 1 km from the summit produced minor ashfall.

From Wikipedia

Fourpeaked Mountain, also known as Fourpeaked Volcano, is an active stratovolcano located in the U.S. state of Alaska within Katmai National Park and Preserve. The volcano is nearly completely covered by Fourpeaked Glacier.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
2006~2006 · 1 eruptions · max VEI 220062006200720072007

Detailed timeline

  1. 2006VEI 2Observed
    2006-09-17 – 2006-09-17
    Fissure trending N from summit

External links

⚠ For reference only. Not for emergency response.