… The longitudinal section of a glacial valley is often stepped, with flat areas where lakes can form alternating with steep cliffs (valley fences) with waterfalls. In the lower reaches, end moraines that cross the valley sometimes form lakes, and as sedimentation progresses, a valley floor plain is formed. Further downstream, the valley floor plain formed during the last glacial period often becomes terraced. … *Some of the terminology that mentions "end moraine" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 氷食谷の縦断面形は階段状になっていることが多く,湖が形成されるほど平坦な部分と滝のあるような急崖(谷柵)とが交互に現れる。下流部では谷を横切る末端モレーンend moraine(終堆石)が湖を形成していることもあり,堆積が進み,谷底平野が形成されている。さらに下流では最終氷期に形成された谷底平野が段丘化していることが多い。… ※「end moraine」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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