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Steens Mountain Wilderness : ウィキペディア英語版 | Steens Mountain Wilderness
The Steens Mountain Wilderness is a wilderness area surrounding a portion of Steens Mountain of southeastern Oregon in the United States. The reserve falls within the Steens Mountain Cooperative Management and Protection Area (CMPA). Both the reserve and the CMPA are administered by the Bureau of Land Management. The wilderness area encompasses of the CMPA's total .〔(【引用サイトリンク】title=Steens Mountain )〕 of the Wilderness are protected from grazing and free of cattle.〔(【引用サイトリンク】title=Steens Mountain Wilderness )〕 ==Topography== The Steens Mountain Wilderness ranges in elevation from at the summit of Steens Mountain. The reserve features a variety of vegetative zones, from the Arid Sagebrush Zone in the Alvord Desert, through the Western Juniper, Mountain Mahogany, Mountain Big Sagebrush, Quaking Aspen, Subalpine Meadow, and Subalpine Grassland Zones, to the Snow Cover Zone.〔(【引用サイトリンク】title=Steens Mountain Wilderness, Oregon )〕 Steens Mountain is the largest fault-block mountain in North America. Pressure under the Earth's surface thrust the block upward approximately 20 million years ago, resulting in a steep eastern face with a more gentle slope on the western side of the mountain. During the Ice Age, glaciers carved several deep gorges into the peak and created depressions where Lily, Fish, and Wildhorse lakes now stand.〔
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「Steens Mountain Wilderness」の詳細全文を読む
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