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Definition of Esker

Esker Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
See Eschar.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
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WordNet 2.0

1. (geology) a long winding ridge of post glacial gravel and other sediment; deposited by meltwater from glaciers or ice sheets
(hypernym) ridge
(classification) geology
Esker Definition from Science & Technology Dictionaries & Glossaries
Soil Glossary - Mani
A long narrow ridge, chiefly of gravel and sand formed by a melting glacier or ice sheet.
Agricultural Glossary/yigini2004
Narrow ridge of gravel or sandy material deposited by stream running from a tunnel or valley in a glacier.
Esker Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
An esker, eskar, eschar, or os, sometimes called an asar, osar, or serpent kame, is a long, winding ridge of stratified sand and gravel, examples of which occur in glaciated and formerly glaciated regions of Europe and North America. Eskers are frequently several kilometres long and, because of their peculiar uniform shape, are somewhat like railway embankments.

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Esker Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
A narrow ridge of gravelly or sandy glacial outwash material deposited by a stream in an ice tunnel within a glacier. Also referred to as os3.