Esker

Alternative definitions (5), class: vernacular (0)
Term: Esker
Definition: A meandering, water-deposited, generally steep-sided sediment ridge that forms within a subglacial or englacial stream channel. Its floor can be bedrock, sediment, or ice. Subsequent melting of the glacier exposes the deposit. Generally composed of stratified sand and gravel, eskers can range from feet to miles in length and may exceed 100 feet in height.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary
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