United States · Stratovolcano
Mount Westdahl
Westdahl
- Type
- Stratovolcano
- Elevation
- 1563m
- Last eruption
- 1992
- Type
- Stratovolcano
- Country
- United States
- Region
- North America / Aleutian Ridge Volcanic Arc
- Elevation
- 1563m
- Coordinates
- 54.516, -164.650
- Last eruption
- 1992
- Tectonic setting
- Subduction zone / Continental crust (> 25 km)
- Landform
- Composite
- Major rock type
- Basalt / Picro-basalt
Geological summary
Westdahl is a broad glacier-covered volcano occupying the SW end of Unimak Island. Two peaks protrude from the summit plateau, and a new crater formed in 1978 cuts the summit icecap.
Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →
From Wikipedia
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.
Wikipedia · CC BY-SA · Read full article →
Eruption history
8 recordedGlossaryRecord summary
- Confirmed eruptions
- 7
- Uncertain eruptions
- 1
- Span of confirmed record
- 1795 – 1992
- Largest confirmed eruption
- VEI 4 (1795)
- Confirmed eruptions since 1900
- 3
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
Detailed timeline
- 1991VEI 3Observed1991-11-29 – 1992-01-14ENE flank (1560-760 m)
- 1979VEI 3Method not stated1979-02-08 – 1979-02-09
- 1978VEI 3Observed1978-02-04 – 1978-02-09South of Westdahl Peak (1450 m)
- 1964VEI 2Observed1964-03-10 – 1964-04-16
- 1827VEI 2Observed1827-07-02 – 1830-07-02Pogromni or (more likely) Westdahl
- 1820VEI 2Observed1820-07-02 – end unknownPogromni or (more likely) Westdahl
- 1796VEI 0Observed1796 – end unknownPogromni or (more likely) Westdahl
- 1795VEI 4Observed1795 – end unknownPogromni or (more likely) Westdahl
Nearby volcanoes
External links
⚠ For reference only. Not for emergency response.