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Hayes Volcano

Hayes

Stratovolcano · 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. · Photo: Photo courtesy of Alaska Volcano Observatory, U.S. Geological Survey. · Wikimedia Commons
Type
Stratovolcano
Country
United States
Region
North America Volcanic Regions / Alaska Peninsula Volcanic Arc
Elevation
3034m
Coordinates
61.640, -152.411
Last eruption
1200
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Dacite
Geological summary

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.

From Wikipedia

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.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1850 BCE~1659 BCE · 1 eruptions · max VEI ?1659 BCE~1469 BCE · 1 eruptions · max VEI 51009~1200 · 1 eruptions · max VEI ?1850 BCE1087 BCE325 BCE2471009

Detailed timeline

  1. 1200 (±300 yrs)VEI ?Geological estimate
    1200 – Ongoing
  2. 1550 BCEVEI 5Geological estimate
    BCE 1550 – Ongoing
  3. 1850 BCEVEI ?Geological estimate
    BCE 1850 – Ongoing

External links

⚠ For reference only. Not for emergency response.