Westdahl Volcano

Westdahl Volcano
Summit area of Westdahl Volcano, February 1993.
Highest point
Elevation	5,426 ft (1,654 m) [1] [2]
Prominence	1,365 ft (416 m)
Coordinates	54°31′05″N164°39′00″W / 54.518°N 164.65°W / 54.518; -164.65
Geography
Westdahl Volcano Location in Alaska
Location	Unimak Island,Alaska, USA
Parent range	Aleutian Range
Topo map	USGS Unimak C-2
Geology
Formed by	Subduction zone volcanism
Rock age	Holocene
Mountain type	Stratovolcano
Volcanic arc	Aleutian Arc
Last eruption	1991 to 1992

Westdahl Peak, also known as Westdahl Volcano or Mount Westdahl, is a stratovolcano of the Aleutian Range, in the U.S. state of Alaska. The volcano last erupted from November 29, 1991, to January 15, 1992. ^{[2] [3]}

It is on Unimak Island, near the western tip of the Alaska Peninsula. The volcano has a second summit, called Faris Peak, which is actually the highest point at 5,426 feet (1,654 m). ^[4] Westdahl Peak currently has a summit elevation of 5,118 feet (1,560 m). ^[2]

Other historical eruptions, all attributed to Westdahl by the Alaska Volcano Observatory, have been reported in 1795–1796, 1827–1829, 1951, 1964 and 1978. A couple eruptions were originally reported to be from nearby Pogromni Volcano, but the peak is old, eroded and most likely hasn't erupted since Pleistocene time. ^{[5] [2]}

Map showing volcanoes of Alaska Peninsula

See also

• Fisher Caldera — also on Unimak Island.
• Alaska Volcano Observatory

References

1. Peakbagger.com, Faris Peak, Alaska, Retrieved Jan. 6, 2023.
2. Alaska Volcano Observatory, Volcano Information -- Westdahl, Retrieved Dec. 16, 2022.
3. Alaska Volcano Observatory, Volcano Information -- Historic eruptions at Westdahl Archived 2023-09-07 at the Wayback Machine , Retrieved Dec. 16, 2022.
4. Alaska Volcano Observatory, Volcano Information -- Faris Peak, Retrieved Dec. 16, 2022.
5. Alaska Volcano Observatory, Volcano Information -- Reported Activity at Westdahl, Retrieved Dec. 16, 2022.

• "Westdahl". Global Volcanism Program . Smithsonian Institution.
• Volcanoes of the Alaska Peninsula and Aleutian Islands-Selected Photographs Archived 2009-05-07 at the Wayback Machine
• Alaska Volcano Observatory