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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Akutan
Akutan has a 2-km-wide summit caldera with a large scoria cone that rises above the caldera rim. It is seen here from the south in eruption on 11 February 1987. A small lake occupies part of the caldera floor. The caldera rim is breached narrowly on the north side through which a 1978 lava flow traveled to within 2 km of the sea. Photo by Jerry Chisum (Mark Airways), 1987 (courtesy of John Reeder, Alaska Div. Geology & Geophysical Surveys).
Volcano Number:
311320
Volcano Name:
Akutan
Country:
United States
Volcano Type:
Stratovolcano
Last Eruption:
1992 CE
Elevation:
1303m
Tectonic Setting:
Subduction zone / Intermediate crust (15-25 km)
Pop. within 10km:
24
Pop. within 30km:
233
Pop. within 100km:
4361
Latitude:
54.134
Longitude:
-165.986
Details
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Akutan contains a 2-km-wide caldera with a large cinder cone in the NE part of the caldera that has been the source of frequent explosive eruptions and occasional lava effusion that covers the caldera floor. 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 1,600 years ago and contains at least three lakes. 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.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
Sorry. No emissions data found for this volcano.
Data from the Earthchem Library
Sorry. No data exist for this volcano in the EarthChem Library.
Data from the Earthchem Portal
Sorry. No data exist for this volcano in the EarthChem Portal.
Data from the SESAR Database
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Data from the MaGa Database
Sorry. No data exist for this volcano in the MaGa database.
Data from UNAVCO
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Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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