| 翻訳と辞書 |
| glacial boundary ： ウィキペディア英語版 |
glacial boundary
A glacial boundary is a line on a map representing the farthest advance of a glacier that has retreated. It generally refers to the extent of continental, rather than alpine, glaciers.
In the northern hemisphere, glaciers advanced from the north during the Pleistocene epoch. The glacial boundary thus represents the farthest southern extent of the glaciers at that time.
In North America, the boundary from the most recent ice sheet passes through the states of New York, New Jersey, Pennsylvania, Ohio, Kentucky, Indiana, Illinois, Missouri, Kansas, Nebraska, South Dakota, Montana, and Washington. It also crosses the U.S.-Canadian border in several locations.
See Timeline of glaciation.
See the U.S. (National Atlas ) for a (map of the boundary ) in North America.
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「glacial boundary」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.
|
|