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Crane Mountain is part of the Warner Mountain range. It is located southeast of Lakeview in south-central Oregon, near the northwest corner of the Basin and Range country of the western United States. It is the tallest peak in Lake County. The mountain is in the Fremont section of the Fremont–Winema National Forest. There was once a United States Forest Service fire lookout located near the summit of the mountain; however, it is now gone. The ''Crane Mountain National Recreation Trail'' runs north and south along the crest of the mountain. == Geography and geology == Crane Mountain is a peak near the northern end of the Warner Mountains in south-central Oregon. It is in the northwest corner of the basin and range country of the western United States. The mountain is located in the Fremont–Winema National Forest, approximately southeast of Lakeview. The summit of Crane Mountain is above sea level. The mountain has a topographic prominence of . Crane Mountain is the highest peak in Lake County, Oregon.〔Sullivan, William L., "Crane Moutain," ''Exploring Oregon’s Wild Area'' (Second Edition), The Mountaineers, Seattle, Washington, 1994, pp. 256–257.〕〔( "California-Oregon border backcountry mule deer of the Warner Mountains" ), "Backcountry Borderlands Safeguarding Sportsmen’s Interests Across State Lines", Theodore Roosevelt Conservation Partnership, Washington, District of Columbia, accessed June 6, 2015.〕〔("Crane Mountain" ), ''SummitPost'', ''www.summitpost.org'', accessed June 5, 2015.〕〔(Oregon topographic map ), United States Geological Survey, United States Department of Interior, Reston, Virginia; displayed via ACME mapper, ''www.acme.com'', June 4, 2015.〕 Crane Mountain is a block fault geologic structure typical of southeast Oregon’s basin and range country. The primary rock that makes up the mountain is basalt. The mountain has a western facing fault scarp with a steep cliff face overlooking the Goose Lake Valley. The mountain’s fault block displacement tilts layers of basalt upward to expose the underlying John Day rhyolite tuff formation on the western flank of the mountain. Agates and thunder eggs are found in the rhyolite layers. Small amounts of gold bearing quartz are also found on the southern slope of the mountain. This is very unusual for an area dominated by basalt.〔 The soils around the mountain are typical of the area. They are derived primarily from broken-down basalt and tuffaceous materials.〔Anderson, E. William, Michael M. Borman, and William C. Krueger, ("Klamath Ecological Province" ), ''The Ecological Provinces of Oregon'', Department of Rangeland Resources and Management, Oregon State University, 1997.〕 Crane Mountain is near the northern end of the Warner Mountains. The pine and fir forests of the Warner range extend north and south from Crane Mountain.〔("Table Two – Bird Habitat Conservation Areas by Ecoregion" ), "Coordinated Implementation Plan for Bird Conservation in Eastern Oregon", Oregon Working Group, Eastern Oregon Habitat Joint Venture, West Linn, Oregon, 2005, p. 24.〕 To the west of the mountain is the Goose Lake Valley and to the east is the Warner Valley, both are developed agricultural areas.〔〔Johnson, Daniel M., ("Goose Lake" ), ''Atlas of Oregon Lakes'', Oregon State University Press, Corvallis, Oregon, June 1, 1985, p. 86.〕〔Whistler, John T. and John H. Lewis, ("Transportation and Markets" ), ''Warner Valley and White River Projects'', United States Reclamation Service, United States Department of Interior in cooperation with the State of Oregon, Washington D.C., February 1916, p. 19.〕 The mountain is drained by five permanent creeks. Crane Creek drains the northern slopes of the mountain. The western flank of the mountain is drained by Cogswell Creek and the southwest slope by Kelley Creek. All three of these creeks flow into Goose Lake. The northeast slope is drained by Willow Creek while the east and southeast slopes are drained by Deep Creek. Both of these creeks flow into the Warner Valley, supplying the Warner Lakes system with water.〔〔McArthur, Lewis A. and Lewis L. McArthur, "Crane Creek", ''Oregon Geographic Names'' (Seventh Edition), Oregon Historical Society Press: Portland, Oregon, 2003, p. 245.〕〔McArthur, Lewis A. and Lewis L. McArthur, "Cogswell Creek", ''Oregon Geographic Names'' (Seventh Edition), Oregon Historical Society Press: Portland, Oregon, 2003, p. 216.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Crane Mountain」の詳細全文を読む スポンサード リンク
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