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Hayes Volcano

Hayes

Stratovulcano · United States · 3034 m

Hayes, located in a remote part of the Alaska Range, is almost totally covered by glacial ice and was not discovered until 1975. The volcano, named for the Hayes glacier, consists of remnants of a mostly snow-and-ice covered edifice that has been largely destroyed by catastrophic eruptions. The exposed rock in the foreground is South Dome. Hayes produced the most voluminous Holocene eruptions in the Cook Inlet area between about 3,800 and 3,400 years ago, and as recently as about 1,000 years ago.
Hayes, located in a remote part of the Alaska Range, is almost totally covered by glacial ice and was not discovered until 1975. The volcano, named for the Hayes glacier, consists of remnants of a mostly snow-and-ice covered edifice that has been largely destroyed by catastrophic eruptions. The exposed rock in the foreground is South Dome. Hayes produced the most voluminous Holocene eruptions in the Cook Inlet area between about 3,800 and 3,400 years ago, and as recently as about 1,000 years ago. · Foto: Photo courtesy of Alaska Volcano Observatory, U.S. Geological Survey. · Wikimedia Commons
Tipo
Stratovulcano
Paese
United States
Regione
North America Volcanic Regions / Alaska Peninsula Volcanic Arc
Altitudine
3034 m
Coordinate
61.640, -152.411
Ultima eruzione
1200
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Dacite
Sintesi geologica

Hayes volcano, located in a remote and rugged part of the Alaska Range NW of Anchorage and N of Mount Gerdine, was not discovered until 1975. It was named after nearby Hayes Glacier and consists of scattered remnants of a largely snow-and-ice covered volcano that has been destroyed by catastrophic eruptions. The most widespread Holocene eruptions in the Cook Inlet area originated from Hayes between about 3800 and 3400 years ago and produced six regional tephra layers with an average volume of 2.4 km3. The latest known eruption took place about 1000 years ago.

Sintesi da Wikipedia

Riassunto in inglese

Hayes Volcano is a stratovolcano in southwestern Matanuska-Susitna Borough, Alaska, 135 km northwest of Anchorage, that was not discovered until 1975. It is responsible for a series of six major tephra layers in the Cook Inlet region of Alaska. Hayes was mostly destroyed by at least six catastrophic eruptions between 3,400 and 3,800 years ago, and the average volume of these eruptions was 2.4 cubic km. In comparison, the volume of the May 18, 1980 eruption of Mount St. Helens was about 1 cubic km. The eruptions of Hayes Volcano during that time were the most voluminous Holocene eruptions to have occurred in the Cook Inlet region. There is currently no fumarolic activity present. The last eruption of Hayes Volcano occurred roughly 1,200 years ago. It is named after the adjacent Hayes Glacier.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1850 BCE~1659 BCE · 1 eruzioni · VEI max. ?1659 BCE~1469 BCE · 1 eruzioni · VEI max. 51009~1200 · 1 eruzioni · VEI max. ?1850 BCE1087 BCE325 BCE2471009

Cronologia dettagliata

  1. 1200 (±300 anni)VEI ?Stima geologica
    1200 – In corso
  2. 1550 a.C.VEI 5Stima geologica
    BCE 1550 – In corso
  3. 1850 a.C.VEI ?Stima geologica
    BCE 1850 – In corso

Link esterni

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