…This is called an Inselberg, which means an island mountain. As erosion progresses further, the Inselberg disappears and becomes a pediplain, a flat, vast terminal landform. When a basin is formed in an arid region by ground movement or wind erosion, the running water may not reach the sea and an inland drainage basin may be formed. … From [Pediment]...As the pediments expand, the mountains become isolated hills called Inselbergs (German). When the Inselbergs disappear, they become a vast, flat, terminal landform called a pediplain. It is generally believed that pediments were formed as a result of mountain slopes retreating due to mechanical weathering, but there is also a view that in stable land masses such as Australia, the pediments were chemically weathered, and then the weathered materials were washed away, leaving the unweathered parts as mountains. ... *Some of the terminology explanations that mention "pediplain" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これは〈島山〉を意味するインゼルベルクInselbergと呼ばれる。さらに浸食がすすむとインゼルベルクも消滅し平たんで広大な終末地形であるペディプレーンpediplainとなる。乾燥地域で地盤運動や風による浸食によって盆地が形成されると,流水が海まで到達せず内陸流域が形成されることがある。… 【ペディメント】より…ペディメントの拡大が進むと,山地はインゼルベルクInselberg(ドイツ語)と呼ばれる孤立丘となる。インゼルベルクも消滅するとペディプレーンpediplainと呼ばれる広大で平坦な終末地形となる。ペディメントは山地斜面が機械的風化作用により後退した結果形成されたとする見解が一般的であるが,オーストラリアなど安定陸塊では,ペディメントの部分が化学的風化を受けた後に風化物質が洗い流され,未風化の部分が山地として現れたとの見解もある。… ※「pediplain」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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