Diamond Peak (Oregon)

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Coordinates: 43°31′13″N 122°08′59″W / 43.5204007, -122.1497581

Diamond Peak

Diamond Peak Volcano, with the smaller Mount Yoran to the right
Elevation 8,744 feet (2,665 m)[1]
Location Oregon, USA
Range Cascades
Prominence 3,104 feet (946 m)[2]
Coordinates 83°31′13″N 122°08′59″W / 443.5204007, -122.1497581[3]
Topo map USGS Diamond Peak
Type shield volcano
Volcanic arc/belt Cascade Volcanic Arc
Age of rock less than 100,000 years[4]
First ascent John Diamond & William Macy, 1852[5]

Diamond Peak is a shield volcano in south west Oregon and is part of the Cascade Range. The mountain is in the Diamond Peak Wilderness and near Willamette Pass.

Composed of basaltic andesite, the volcano is older than the last ice age but probably younger than 100,000 years. It first began erupting from its northern summit and then from a new vent a little to the south, which is now the main peak. The mountain has several cirques from glacial erosion. It lies directly on the Cascade Crest and therefore receives a heavy snow pack. Snow fields on the northern side may have been glaciers as recently as 100 years ago.[6]

[edit] See also

[edit] References

  1. ^ NGS Data Sheet for Diamond. U.S. National Geodetic Survey. Retrieved on 2008-04-01.
  2. ^ Diamond Peak. Peakbagger.com. Retrieved on 2008-04-01.
  3. ^ USGS GNIS: Diamond Peak (Oregon). Retrieved on 2008-03-31.
  4. ^ Deschutes & Ochoco National Forests - Diamond Peak Volcano. USDA Forest Service (2003-11-26). Retrieved on 2007-05-21.
  5. ^ Diamond Peak. Skiing the Cascade Volcanoes. Retrieved on 2008-04-01.
  6. ^ Cascades Volcano Observatory: Diamond Peak. USDA Forest Service. Retrieved on 2008-04-01.

[edit] External links

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Volcanoes of Oregon
High Cascades
Western Cascades
Eastern Cascades
Basin and Range
Columbia Plateau