Mount Washington (Oregon)

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Mount Washington
Elevation	7,795 feet (2,376 metres)
Location	Oregon, USA
Range	Cascade Volcanic Arc, Cascade Range
Prominence	2,554 ft (779 m)
Coordinates	44°19′55.65″N, 121°50′18.70″W
Topo map	USGS Mount Washington 44121-C7
Type	Shield volcano
Age of rock	Pleistocene
Last eruption	~ 670 AD
First ascent	1923 by E. McNeal and party

Mount Washington is a 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.

[edit] External links

• USGS page about Mount Washington (reference)
• Maps and aerial photos
  • WikiSatellite view at WikiMapia
  • Topographic map from TopoZone
  • Aerial image from TerraServer-USA
  • Surrounding area map from Google Maps
  • Location in the United States from the Census Bureau

Volcanoes of Oregon v • d • e
High Cascades		Mt Hood | Olallie Butte | Mt Jefferson | Three Fingered Jack | Hogg Rock | Hoodoo Butte | Hayrick Butte | Black Butte | Mt Washington | Belknap Crater | Black Crater | Three Sisters | Broken Top | Tumalo Mtn | Mt Bachelor | Maiden Peak | Diamond Peak | Howlock Mtn | Mt Thielsen | Mt Bailey | Mt Mazama / Crater Lake | Mt Scott | Union Peak | Pelican Butte | Mt McLoughlin | Aspen Butte
Western Cascades		Boring Lava Field (Mt Sylvania | Mt Tabor | Rocky Butte | Powell Butte | Larch Mtn)
Eastern Cascades		Pilot Butte | Lava Butte | Newberry Volcano | Yamsay Mtn
Basin and Range		Big Hole | Hole-in-the-Ground | Fort Rock	Columbia Plateau		Columbia River Basalt Group