Union Peak

Infobox Mountain
Name = Union Peak
Photo = Union Peak Giampaolo 20040717 068.jpg
Caption = Union Peak with Mount McLoughlin in the background as seen from Crater Lake.
Elevation = convert|7714|ft|m [ cite web
url = http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=NZ1034
title = NGS Data Sheet for 7698=UNION PEAK
publisher = U.S. National Geodetic Survey
accessdate = 2008-04-03 ]
Location = Oregon, USA
Range = Cascades
Prominence =
Coordinates = coord|42.8312399|-122.2236398|format=dms|region:US_type:mountain [GNIS|1151653accessdate|2008-04-03]
Topographic
USGS Union Peak 42122-G2
Type = Shield volcanocite web
last = Cranson
first = K.R.
title = Cinder Cones in Crater Lake National Park
work = Crater Lake National Park: Nature Notes Volume XXXII-XXXIII - 2001/2002
publisher = National Park Service
date = 2002-04-06
url = http://www.nps.gov/archive/crla/notes/vol32-33e.htm
format = HTML
accessdate = 2008-09-15]
Volcanic_Arc/Belt = Cascade Volcanic Arc
Age =
Last eruption =
First ascent =
Easiest route =

Union Peak is a heavily eroded shield volcano in the Cascade Range of central Oregon, located along the Cascade Crest less than convert|7|mi|km southwest of the rim of Crater Lake. Ice Age glaciers eroded away most of the flanks of the volcano, leaving numerous deep cirques surrounding a central glacial horn. This is the same process that formed the summit horns of Three Fingered Jack, Mount Washington, Howlock Mountain, and Mount Thielsen from other shield volcanoes farther north in the Oregon Cascades.

Union Peak is located within Crater Lake National Park, and the summit was used as a post for fire lookouts from the 1930s to the 1950s. A convert|5.5|mi|km|1 trail leads to the summit from the Pacific Crest Trail off Oregon Route 62.

References

* cite book
last = Harris
first = Stephen L.
title = Fire Mountains of the West: The Cascade and Mono Lake Volcanoes (3rd ed.)
publisher = Mountain Press Publishing Company
date = 2005
isbn = 0-87842-511-X
* cite book
last = Wood
first = Charles A.
coauthors= Jürgen Kienle, eds.
title = Volcanoes of North America
publisher = Cambridge University Press
date = 1990
isbn = 0-521-43811-X
* cite book
last = Kresek
first = Ray
title = Fire Lookouts of the Northwest (3rd ed.)
publisher = Historic Lookout Project
date = 1998
isbn = 0-87770-632-8