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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Mount Rogers ： ウィキペディア英語版 Mount Rogers Mount Rogers is the highest natural point in the Commonwealth of Virginia, USA, with a summit elevation of above mean sea level. It lies in Grayson and Smyth Counties, Virginia, about WSW of Troutdale, Virginia, within the Mount Rogers National Recreation Area and Jefferson National Forest. The mountain is named for William Barton Rogers, a Virginian educated at the College of William & Mary, who taught at William & Mary and the University of Virginia, became Virginia's first State Geologist,〔http://web.wm.edu/geology/virginia/provinces/Blueridge/mtrogers.html〕 and went on to found the Massachusetts Institute of Technology. The summit is most easily accessed from Grayson Highlands State Park by following the Appalachian Trail southbound for to a blue-blazed trail leading to the summit, which is covered by trees and marked with four National Geodetic Survey triangulation station disks; a standard station disk marked with an equilateral triangle and three standard reference disks marked with arrows pointing towards the station disk. One reference disk has been obscured by dense overgrowth. Because the Appalachian Trail passes within a half mile of the summit, the area is especially popular with hikers. ==Geology== The Mount Rogers area contains a unique record of the geohistory of Virginia. There is evidence from the rocks that volcanoes were part of the landscape. Roughly 750 million years ago, rift-related (divergent) volcanoes erupted along the axis of what later became the Appalachians, and one remnant of that volcanic zone, with its volcanic rocks, still can be seen at Mount Rogers. Massive rhyolite lava flows erupted at the mountain during the Precambrian rifting event. Mount Rogers is also the only place in Virginia that preserves evidence of ancient Proterozoic glaciation.〔http://www.runet.edu/~fldsch/RUFieldschool/fieldtrips/MountRogers/MRIntroduction/MtRogersIntro.html Introduction to Mount Rogers〕 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「Mount Rogers」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.