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Monte Amak

Amak

Estratovolcán · United States · 547 m

Amak, the easternmost of the Aleutian Islands, lies north of the tip of the Alaskan Peninsula. Like Bogoslof, it lies north of the main Aleutian volcanic front. Lava flows with prominent levees were emplaced in historical eruptions during 1700-1710 and in 1796.
Amak, the easternmost of the Aleutian Islands, lies north of the tip of the Alaskan Peninsula. Like Bogoslof, it lies north of the main Aleutian volcanic front. Lava flows with prominent levees were emplaced in historical eruptions during 1700-1710 and in 1796. · Foto: Photo by Dave Roseneau, 2001 (U.S. Fish and Wildlife Service). · Wikimedia Commons
Tipo
Estratovolcán
País
United States
Región
North America Volcanic Regions / Aleutian Ridge Volcanic Arc
Altitud
547 m
Coordenadas
55.418, -163.147
Última erupción
1796
Contexto tectónico
Subduction zone / Continental crust (> 25 km)
Forma volcánica
Composite
Roca principal
Andesite / Basaltic Andesite
Resumen geológico

Amak, the easternmost of the Aleutian Islands, is a small island stratovolcano that lies north of the main Aleutian volcanic front, about 50 km NW of Frosty volcano on the western tip of the Alaska Peninsula. The summit of the small, roughly 1 km3 volcano is only 488 m above sea level. Blocky lava flows with prominent levees were emplaced during historical eruptions from 1700-1710 and in 1796 (Marsh, in Wood and Kienle 1990). The flows radiate from a well-defined central crater and cover much of the central part of the island. Earlier volcanism perhaps 4000-5000 years ago consisted of the emission of thin, platy andesitic lava flows. A flat alluvial plain on the S flank contains a flat-bottomed crater that may be a maar.

Resumen de Wikipedia

El volcán Amak es un estratovolcán de en las islas Aleutianas de Alaska, EE. UU., A 995 km de Anchorage. Se encuentra en la isla del mismo nombre, a 50 km del volcán Frosty y cerca del borde del flanco occidental de la península de Alaska. Solo los barcos pueden acceder a la isla con un cierto permiso.

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Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
2550 BCE~2352 BCE · 1 erupciones · VEI máx. ?1598~1796 · 2 erupciones · VEI máx. ?2550 BCE1562 BCE377 BCE6111598

Línea de tiempo detallada

  1. 1796VEI ?Observado
    1796 – En curso
  2. 1700VEI ?Observado
    1700 – 1710
  3. 2550 a. C. (±500 años)VEI ?Estimación geológica
    BCE 2550 – En curso

Enlaces externos

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