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Mount Washington (Oregon)

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Mount Washington
Mount Washington from Big Lake
Highest point
Elevation7,798 ft (2,377 m) NAVD 88[1]
Prominence2,554 ft (778 m)[1]
Geography
Map
LocationDeschutes / Linn counties, Oregon, U.S.
Parent rangeCascade Range
Topo mapUSGS Mount Washington
Geology
Rock agePleistocene
Mountain typeShield volcano[3]
Volcanic arcCascade Volcanic Arc
Last eruptionAbout 670 AD
Climbing
First ascent1923 by E. McNeal and party[4]

Mount Washington is a deeply eroded shield volcano in the Cascade Range of Oregon. The mountain dates to the Late Pleistocene. However, it does have a line of basaltic andesite spatter cones on its northeast flank which are approximately 1,330 years old according to carbon dating. The main peak is a volcanic plug that was heavily eroded by glaciers in the last ice age.[3]

See also

References

  1. ^ a b "Mount Washington, Oregon". Peakbagger.com. Retrieved 2008-04-03.
  2. ^ "Mount Washington". NGS Data Sheet. National Geodetic Survey, National Oceanic and Atmospheric Administration, United States Department of Commerce. Retrieved 2008-11-18.
  3. ^ a b Wood, Charles A.; Kienle, Jűrgen (1993). Volcanoes of North America. Cambridge University Press. pp. 181–182. ISBN 0-521-43811-X.
  4. ^ "Mount Washington". Skiing the Cascade Volcanoes. Retrieved 2008-04-03.


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