A large mountain range in eastern North America. It stretches from southeastern Canada southwest to the state of Alabama in the United States, with a total length of about 2,600 km and a width of 300 to 600 km. It separates the central plains and coastal plains of the United States. It is made up of parallel mountain ranges such as the Green, White, Allegheny, Blue Ridge, and Cumberland, and is hilly and plateau-like in nature, but in the south it forms a mountainous region. The highest point is Mount Mitchell. It has well-developed vertical valleys and few horizontal valleys, which were a major barrier to westward movement during the pioneering era, but the Hudson-Mohawk Valley and Cumberland Gorge were used as pioneer routes. It belongs to the Paleozoic folded mountain range, and produces coal, oil, and iron ore. In the 1930s, the TVA promoted regional development. → Related topics United States | Shale gas Source : Heibonsha Encyclopedia About MyPedia Information |
北米東部の大山脈。カナダ南東部から南西に米国アラバマ州まで延び,全長約2600km,幅300〜600km。米国の中央平原と海岸平野を分ける。グリーン,ホワイト,アレゲニー,ブルー・リッジ,カンバーランドなど並行する山脈群からなり,丘陵・台地性であるが,南部では山地状をなす。最高点はミッチェル山。縦谷が発達,横谷は少なく,開拓時代には西漸運動の大きな障壁となったが,ハドソン・モホーク谷,カンバーランド峡谷が開拓路として利用された。古生代褶曲(しゅうきょく)山脈に属し,石炭,石油,鉄鉱石を産する。1930年代にはTVAによる地域開発が進められた。 →関連項目アメリカ合衆国|シェールガス 出典 株式会社平凡社百科事典マイペディアについて 情報 |
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