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Tarn (lake)
A tarn (or corrie loch) is a mountain lake or pool, formed in a cirque excavated by a glacier. It is formed when either rain or river water fills the cirque. A moraine may form a natural dam below a tarn.〔(【引用サイトリンク】 url = http://www.uwsp.edu/geo/faculty/lemke/alpine_glacial_glossary/glossary.html )〕 ==Etymology== The word is derived from the Old Norse word ''tjörn'' meaning pond. Its more specific use as a mountain lake emerges as it is the commonly used term for all ponds in the upland areas of Northern England. Here, it retains a broader use, referring to any small lake or pond, regardless of its location and origin (e.g. Talkin Tarn). In Scandinavian languages, a ''tjern'' or ''tjärn'', ''tärn'' or ''tjørn'' is a small natural lake, often in a forest or with vegetation closely surrounding it or actually growing into the tarn.
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「Tarn (lake)」の詳細全文を読む
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