Akutan

Photo of this volcano
Google Earth icon
Google Earth Placemark
  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 54.134°N
  • 165.986°W

  • 1303 m
    4274 ft

  • 311320
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

There are no activity reports for Akutan.



 Available Weekly Reports

There are no Weekly Reports available for Akutan.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1992 Dec 18 Unknown Confirmed 1 Historical Observations
1992 Mar 8 1992 May 21 Confirmed 2 Historical Observations
1991 Sep 15 1991 Oct 29 ± 1 days Confirmed 2 Historical Observations
1990 Sep 6 1990 Oct 1 Confirmed 2 Historical Observations
1990 Jan 26 ± 5 days 1990 Jan 26 ± 5 days Confirmed 2 Historical Observations
1989 Feb 27 1989 Mar 28 (in or before) Confirmed 2 Historical Observations
1988 Mar 26 1988 Jul 20 Confirmed 2 Historical Observations
1987 Jan 31 1987 Jun 24 Confirmed 2 Historical Observations
1986 Mar 18 1986 Jun 30 Confirmed 2 Historical Observations
1982 Oct 5 ± 4 days 1983 May Confirmed 2 Historical Observations
1980 Jul 3 (in or before) 1980 Jul 8 (?) Confirmed 2 Historical Observations
1978 Sep 25 ± 5 days 1978 Oct Confirmed 2 Historical Observations
1976 Oct 15 ± 45 days 1977 May 9 (in or after) Confirmed 2 Historical Observations
1974 Feb 11 (in or before) Unknown Confirmed 2 Historical Observations West flank ?
1973 Mar (?) 1973 May Confirmed 2 Historical Observations
[ 1972 Sep (?) ] [ Unknown ] Uncertain 2  
1962 Nov 5 ± 4 days Unknown Confirmed 2 Historical Observations
1953 Unknown Confirmed 2 Historical Observations
1951 Oct Unknown Confirmed 2 Historical Observations
1948 Apr 29 1948 Aug 7 (in or after) Confirmed 2 Historical Observations
1946 Dec 1947 Jan Confirmed 2 Historical Observations
1931 May 1931 Aug Confirmed 2 Historical Observations
1929 May (?) Unknown Confirmed 2 Historical Observations
1927 1928 Confirmed 2 Historical Observations
[ 1912 ] [ Unknown ] Uncertain    
1911 Unknown Confirmed 2 Historical Observations
1908 Feb 22 Unknown Confirmed 0 Historical Observations
1907 Unknown Confirmed   Historical Observations
1896 Unknown Confirmed   Historical Observations
1892 Sep 23 Unknown Confirmed 1 Historical Observations
1887 Unknown Confirmed 0 Historical Observations
1883 Unknown Confirmed 2 Historical Observations
1867 Unknown Confirmed   Historical Observations
1865 Unknown Confirmed   Historical Observations
[ 1862 ] [ Unknown ] Uncertain    
1852 Unknown Confirmed   Historical Observations NW flank (Lava Point)
1848 Mar 5 ± 4 days Unknown Confirmed 2 Historical Observations
[ 1845 ] [ Unknown ] Uncertain    
[ 1838 ] [ Unknown ] Uncertain    
[ 1828 ] [ Unknown ] Uncertain    
[ 1790 ] [ Unknown ] Uncertain    
1420 ± 100 years Unknown Confirmed   Radiocarbon (corrected)
0550 (?) Unknown Confirmed   Radiocarbon (uncorrected)
0340 (?) Unknown Confirmed 5 Radiocarbon (uncorrected)
4150 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected)
7620 BCE ± 300 years Unknown Confirmed   Radiocarbon (corrected)

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Byers F M, Barth T F W, 1953. Volcanic activity on Akun and Akutan Islands, Alaska. Proc 7th Pacific Sci Cong, 2: 382-397.

Coats R R, 1950. Volcanic activity in the Aleutian Arc. U S Geol Surv Bull, 974-B: 35-47.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Miller T P, McGimsey R G, Richter D H, Riehle J R, Nye C J, Yount M E, Dumoulin J A, 1998. Catalogue of the historically active volcanoes of Alaska. U S Geol Surv Open-File Rpt, 98-582: 1-104.

Motyka R J, Liss S A, Nye C J, Moorman M A, 1993. Geothermal resources of the Aleutian arc. Alaska Div Geol Geophys Surv, Prof Rpt, no 114, 17 p and 4 map sheets.

Myers J D, 1994. The Geology, Geochemistry and Petrology of the recent Magmatic Phase of the Central and Western Aleutian Arc. Unpublished manuscript, unpaginated.

Richter D H, Waythomas C F, McGimsey R G, Stelling P L, 1998. Geologic map of Akutan Island, Alaska. U S Geol Surv Open-File Rpt, 98-135, 1:48,000 scale map and 22 p text.

Romick J D, Perfit M R, Swanson S E, Shuster R D, 1990. Magmatism in the eastern Aleutian arc: temporal characteristics of igneous activity on Akutan Island. Contr Mineral Petr, 104: 700-721.

Smith R L, Shaw H R, Luedke R G, Russell S L, 1978. Comprehensive tables giving physical data and thermal energy estimates for young igneous systems of the United States. U S Geol Surv Open-File Rpt, 78-925: 1-25.

Waythomas C F, 1999. Stratigraphic framework of Holocene volcaniclastic deposits, Akutan volcano, east-central Aleutians Islands, Alaska. Bull Volc, 61: 141-161.

Waythomas C F, Power J A, Richter D H, McGimsey R G, 1998. Preliminary volcano-hazard assessment for Akutan volcano, east-central Aleutian Islands, Alaska. U S Geol Surv Open-File Rpt, 98-360: 1-36.

Wood C A, Kienle J (eds), 1990. Volcanoes of North America. Cambridge, England: Cambridge Univ Press, 354 p.

One of the most active volcanoes of the Aleutian arc, Akutan contains 2-km-wide caldera with an active intracaldera cone. An older, largely buried caldera was formed during the late Pleistocene or early Holocene. Two volcanic centers are located on the NW flank. Lava Peak is of Pleistocene age, and a cinder cone lower on the flank produced a lava flow in 1852 that extended the shoreline of the island and forms Lava Point. The 60-365 m deep younger caldera was formed during a major explosive eruption about 1600 years ago and contains at least three lakes. The currently active large cinder cone in the NE part of the caldera has been the source of frequent explosive eruptions with occasional lava effusion that blankets the caldera floor. A lava flow in 1978 traveled through a narrow breach in the north caldera rim almost to the coast. Fumaroles occur at the base of the caldera cinder cone, and hot springs are located NE of the caldera at the head of Hot Springs Bay valley and along the shores of Hot Springs Bay.