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Fourpeaked Mountain description and information

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LOCATION
FACTS
Official Name: Fourpeaked Mountain
Type:Stratovolcano
Most Recent Activity:September 17, 2006
Seismically Monitored: No
Elevation: 6903 ft (2104 m)
Latitude: 58.7703° N
Longitude:153.6738° W
Quadrangle:Afognak
CAVW Number:312260
Pronunciation: Sound file
Nearby towns:Port William 44 mi (71 km) SE
Aleneva 59 mi (95 km) SE
Kokhanok 60 mi (97 km) NW
Afognak 62 mi (100 km) SE
Anchorage 213 mi (343 km) NE
DESCRIPTION
From Wood and Kienle (1990): "Fourpeaked Mountain consists of small isolated volcanic exposures surrounded by the Fourpeaked Glacier. The exposures are found along ridge crests and cliff faces on the sides of ridges that radiate out from the ice-covered summit. Lava flows are interlayered with volcanic agglomerate in the isolated exposures.

"Orientation of lava flows suggests the present summit of Fourpeaked is probably the vent for Fourpeaked volcano. Extensive hydrothermal alteration of rocks in this area is consistent with this vent location.

"Fourpeaked is known only from limited reconnaissance studies. The lavas are porphyritic andesite."

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Page modified: June 12, 2014 07:20
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