Esker

Aerial view of a partially drowned esker at Billudden in northern Uppland, Sweden. The shape is modified by coastal processes.

An esker, eskar, eschar, or os, sometimes called an asar, osar, or serpent kame,^[1]^[2] 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 uniform shape, look like railway embankments.^[3]

^ Collins English Dictionary
^ "McGraw-Hill Dictionary of Scientific & Technical Terms". Archived from the original on 2015-04-20. Retrieved 2015-06-30.
^ Gedney, Larry (August 1, 1984). "Eskers: The Upside-Down Riverbeds". Alaska Science Forum Article #674. Archived from the original on 4 April 2012. Retrieved 29 September 2011.

[1] Collins English Dictionary

[2] "McGraw-Hill Dictionary of Scientific & Technical Terms". Archived from the original on 2015-04-20. Retrieved 2015-06-30.

[3] Gedney, Larry (August 1, 1984). "Eskers: The Upside-Down Riverbeds". Alaska Science Forum Article #674. Archived from the original on 4 April 2012. Retrieved 29 September 2011.

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Esker

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