| 释义 |
Definition of esker in English: eskernoun ˈɛskəˈɛskər Geology A long ridge of gravel and other sediment, typically having a winding course, deposited by meltwater from a retreating glacier or ice sheet. Example sentencesExamples - 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.
- The new quarry will destroy the undesignated, unforested eskers and also the burial cairns.
- Late this afternoon, I followed a dry esker, dropped down the ridge and walked right beside a bear den.
- 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.
Origin Mid 19th century: from Irish eiscir. Definition of esker in US English: eskernounˈeskərˈɛskər Geology A long ridge of gravel and other sediment, typically having a winding course, deposited by meltwater from a retreating glacier or ice sheet. Example sentencesExamples - 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.
- Late this afternoon, I followed a dry esker, dropped down the ridge and walked right beside a bear den.
- 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.
- The new quarry will destroy the undesignated, unforested eskers and also the burial cairns.
Origin Mid 19th century: from Irish eiscir. |