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Hayes Volcano

Hayes

成層火山 · United States · 3034m

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. · 写真: Photo courtesy of Alaska Volcano Observatory, U.S. Geological Survey. · Wikimedia Commons
タイプ
成層火山
国
United States
地域
North America Volcanic Regions / Alaska Peninsula Volcanic Arc
標高
3034m
座標
61.640, -152.411
最終噴火
1200年
テクトニクス環境
Subduction zone / Continental crust (> 25 km)
火山地形
Composite
主要岩石
Dacite
地質学的概要

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.

Wikipedia の要約

英語版の要約

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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噴火履歴

概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます
1850 BCE~1659 BCE · 1件 · 最大 VEI ?1659 BCE~1469 BCE · 1件 · 最大 VEI 51009~1200 · 1件 · 最大 VEI ?1850 BCE1087 BCE325 BCE2471009

詳細タイムライン

  1. 1200年 (±300年)VEI ?地質学的推定
    1200 ~ 進行中
  2. 紀元前 1550年VEI 5地質学的推定
    BCE 1550 ~ 進行中
  3. 紀元前 1850年VEI ?地質学的推定
    BCE 1850 ~ 進行中

外部リンク

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