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esker

esker A long, sinuous, steep-sided, narrow-crested ridge which consists of cross-bedded sands and gravels. It is laid down by glacial meltwater either at the retreating edge of an ice sheet, or in an ice-walled tunnel. Subglacially engorged eskers are deposited in subglacial or englacial ice tunnels; to be preserved these tunnels must have been in stagnant ice.

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esker

esker, long, narrow, winding ridge of stratified sand-and-gravel drift. Eskers, many miles long and resembling abandoned railway embankments, occur in Scandinavia, Ireland, Scotland, and New England; they arose from deposition of sediment in the beds of streams flowing through or beneath glaciers.

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esker

esker Long, sinuous, steep-sided, narrow-crested ridge which consists of cross-bedded sands and gravels. It is laid down by glacial meltwater either at the retreating edge of an ice sheet, or in a subglacial, or englacial ice tunnel, or in an ice--walled tunnel.

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esker

es·ker / ˈeskər/ • n. Geol. a long ridge of gravel and other sediment, typically having a winding course, deposited by meltwater from a retreating glacier or ice sheet.

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"esker." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 20 May. 2018 <http://www.encyclopedia.com>.

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