Definition of esker in English:
A long ridge of gravel and other sediment, typically having a winding course, deposited by meltwater from a retreating glacier or ice sheet.
- Wetlands may overlie important groundwater aquifers, especially on moraines, eskers, and fluvioglacial deposits.
- The long sand and gravel bodies called eskers were formed in subglacial cave-like tunnels where sand and gravel were deposited by flowing water.
- A large interior plateau contains dense forests, thousands of lakes and peat bogs, and rocky infertile soils associated with a glacially modified landscape with numerous drumlins and eskers.
mid 19th century: from Irish eiscir.
Definition of esker in:
- US English dictionary
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