Hayes Volcano

Infobox Mountain
Name = Hayes Volcano
Photo = HayesVolcano.jpg
Caption = Hayes Volcano, 1981
Elevation = convert|9147|ft|m|0
Range = Tordrillo Mountains
Location = Matanuska-Susitna Borough, Alaska
Prominence =
Coordinates = coord|61|38|25|N|152|24|41|W|type:mountain_region:US|display=inline,titleVNUM|1=1103-05-]
Topographic
USGS Tyonek C-7
Type=Stratovolcano|Age=|Last eruption=~1,200 years ago
First ascent = | Easiest route =

Hayes Volcano is a little-known volcano 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. [http://www.avo.alaska.edu/volcanoes/volcinfo.php?volcname=Hayes Alaska Volcano Observatory] ] 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.

References

External links

* [http://pubs.usgs.gov/of/2002/of02-072/ Preliminary Volcano-Hazard Assessment for Hayes Volcano, Alaska]