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Fourpeaked Mountain description and information


Official Name: Fourpeaked Mountain
Most Recent Activity:September 17, 2006
Seismically Monitored: No
Elevation: 6903 ft (2104 m)
Latitude: 58.7703° N
Longitude:153.6738° W
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 (344 km) NE
From Wood and Kienle (1990) [1]: "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."

Volcanoes of North America: United States and Canada, 1990
Wood, C. A., and Kienle, Juergen, (eds.), 1990, Volcanoes of North America: United States and Canada: New York, Cambridge University Press, 354 p.

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Page modified: September 29, 2020 12:19
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