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Monte Amak

Amak

Stratovulcano · 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
Stratovulcano
Paese
United States
Regione
North America Volcanic Regions / Aleutian Ridge Volcanic Arc
Altitudine
547 m
Coordinate
55.418, -163.147
Ultima eruzione
1796
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

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.

Sintesi da Wikipedia

Il monte Amak è uno piccolo stratovulcano situato sull'isola omonima in Alaska nelle isole Aleutine. L'Amak è molto simile a un grande duomo vulcanico eccezion fatta per il regolare cratere da cui sono fuoriuscite, anche in tempi storici, lave molto granulose e a blocchi.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
2550 BCE~2352 BCE · 1 eruzioni · VEI max. ?1598~1796 · 2 eruzioni · VEI max. ?2550 BCE1562 BCE377 BCE6111598

Cronologia dettagliata

  1. 1796VEI ?Osservata
    1796 – In corso
  2. 1700VEI ?Osservata
    1700 – 1710
  3. 2550 a.C. (±500 anni)VEI ?Stima geologica
    BCE 2550 – In corso

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.