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United States · Stratovolcano

Hayes Volcano

Hayes

Type
Stratovolcano
Elevation
3034m
Last eruption
1200
Hayes Volcano
Photo: Photo by T.P. Miller, USGS · Public domain · Wikimedia Commons
Type
Stratovolcano
Country
United States
Region
North America / 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.

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Eruption history

3 recordedGlossary
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
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 – end unknown
  2. 1550 BCEVEI 5Geological estimate
    1550 BCE – end unknown
  3. 1850 BCEVEI ?Geological estimate
    1850 BCE – end unknown

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.