United States · Stratovolcano
Mount Amukta
Amukta
- Type
- Stratovolcano
- Elevation
- 1066m
- Last eruption
- 1996
- Type
- Stratovolcano
- Country
- United States
- Region
- North America / Aleutian Ridge Volcanic Arc
- Elevation
- 1066m
- Coordinates
- 52.500, -171.252
- Last eruption
- 1996
- Tectonic setting
- Subduction zone / Intermediate crust (15-25 km)
- Landform
- Composite
- Major rock type
- Andesite / Basaltic andesite
Geological summary
The symmetrical Amukta stratovolcano lies in the central Aleutians SW of Chagulak Island and is the westernmost of the Islands of the Four Mountains group.
Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →
From Wikipedia
The undissected stratovolcano of Amukta volcano makes up most of nearly circular, 7.7-km-wide Amukta Island. It is the westernmost of the Islands of Four Mountains chain. The nearest islands to it are Yunaska and Seguam Island; it is separated from Seguam Island by Amukta Pass. The cone, about 5.8 km in basal diameter and topped by a 0.4 km wide summit crater, appears on synthetic-aperture radar imagery to be built upon a 300+ meter high, east-west trending arcuate ridge.
Wikipedia · CC BY-SA · Read full article →
Eruption history
8 recordedGlossaryRecord summary
- Confirmed eruptions
- 5
- Uncertain eruptions
- 3
- Span of confirmed record
- 1786 – 1996
- Largest confirmed eruption
- VEI 3 (1963, the most recent of 2)
- Confirmed eruptions since 1900
- 3
Detailed timeline
- 1997VEI 1Observed1997-03-03 – end unknown
- 1996VEI 1Observed1996-09-17 – 1996-09-18
- 1987VEI 1Observed1987-09-04 – 1987-09-04
- 1963VEI 3Observed1963-02-13 – end unknown
- 1878VEI ?Observed1878-07-02 – end unknown
- 1876VEI ?Method not stated1876-07-02 – end unknown
- 1786VEI 3Observed1786-06 – 1791
- 1770VEI ?Method not stated1770 – end unknown
Nearby volcanoes
External links
⚠ For reference only. Not for emergency response.