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Monte Amukta

Amukta

Estratovolcán · United States · 1066 m

Amukta in the central Aleutians is located along the coast of the 8-km-wide island of the same name. It has had several eruptions since the late 18th century from both summit and flank vents.
Amukta in the central Aleutians is located along the coast of the 8-km-wide island of the same name. It has had several eruptions since the late 18th century from both summit and flank vents. · Foto: Photo by U.S. Fish and Wildlife Service, 1972 (courtesy of Alaska Volcano Observatory). · Wikimedia Commons
Tipo
Estratovolcán
País
United States
Región
North America Volcanic Regions / Aleutian Ridge Volcanic Arc
Altitud
1066 m
Coordenadas
52.500, -171.252
Última erupción
1996
Contexto tectónico
Subduction zone / Intermediate crust (15-25 km)
Forma volcánica
Composite
Roca principal
Andesite / Basaltic Andesite
Resumen geológico

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. The stratovolcano was constructed at the northern side of an arcuate caldera-like feature that is open to the sea along the southern coast of the 8-km-wide Amukta Island. It overlies a broad shield volcano and is topped by a 400-m-wide crater, and a cinder cone is located near the NE coast. There have been several reported eruptions from both summit and flank vents.

Resumen de Wikipedia

Resumen en inglés

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.

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Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1770~1793 · 2 erupciones · VEI máx. 31861~1884 · 2 erupciones · VEI máx. ?1952~1974 · 1 erupciones · VEI máx. 31974~1997 · 3 erupciones · VEI máx. 117701815188419291974

Línea de tiempo detallada

  1. 1997VEI 1Observado
    1997-03-03 – En curso
  2. 1996VEI 1Observado
    1996-09-17 – 1996-09-18
  3. 1987VEI 1Observado
    1987-09-04 – 1987-09-04
  4. 1963VEI 3Observado
    1963-02-13 – En curso
  5. 1878VEI ?Observado
    1878 – En curso
  6. 1876VEI ?Estimación geológica
    1876 – En curso
  7. 1786VEI 3Observado
    1786-06 – 1791
  8. 1770VEI ?Estimación geológica
    1770 – En curso

Enlaces externos

⚠ Solo como referencia. No apto para respuesta ante emergencias.