drumlin
drum·lin
D0401500 (drŭm′lĭn)drumlin
(ˈdrʌmlɪn)drum•lin
(ˈdrʌm lɪn)n.
drum·lin
(drŭm′lĭn)drumlin
Noun | 1. | drumlin - a mound of glacial drift |
单词 | drumlin | |||
释义 | drumlindrum·linD0401500 (drŭm′lĭn)drumlin(ˈdrʌmlɪn)drum•lin(ˈdrʌm lɪn)n. drum·lin(drŭm′lĭn)drumlin
drumlindrumlin(drŭm`lĭn), smooth oval hill of glacial driftdrift,deposit of mixed clay, gravel, sand, and boulders transported and laid down by glaciers. Stratified, or glaciofluvial, drift is carried by waters flowing from the melting ice of a glacier. ..... Click the link for more information. , elongated in the direction of the movement of the ice that deposited it. Drumlins, which may be more than 150 ft (45 m) high and more than 1-2 mi (.8 km) long, are common in New York, Wisconsin, Canada, and Northern Ireland. drumlin[′drəm·lən]drumlin
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