Mount Washington (Oregon)

Mount Washington
Mount Washington from Big Lake
Highest point
Elevation	7,798 ft (2,377 m)  NAVD 88[1]
Prominence	2,554 ft (778 m) [1]
Coordinates	44°19′56″N 121°50′19″W / 44.3321254°N 121.8385292°WCoordinates: 44°19′56″N 121°50′19″W / 44.3321254°N 121.8385292°W [2]
Geography
Location	Deschutes / Linn counties, Oregon, U.S.
Parent range	Cascade Range
Topo map	USGS Mount Washington
Geology
Age of rock	Pleistocene
Mountain type	Shield volcano[3]
Volcanic arc	Cascade Volcanic Arc
Last eruption	About 670 AD
Climbing
First ascent	1923 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

• Mount Washington Wilderness
• Willamette National Forest

References

1. "Mount Washington, Oregon". Peakbagger.com. Retrieved 2008-04-03.
2. "Mount Washington". NGS data sheet. U.S. National Geodetic Survey. Retrieved 2008-11-18.
3. 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.

External links

• "Mount Washington". Geographic Names Information System. United States Geological Survey. Retrieved 2008-11-18.
• "Washington, Oregon". Volcano World. Retrieved 2016-04-26.