esker

Noun

A long, narrow, winding ridge composed of stratified sand and gravel deposited by a subglacial or englacial meltwater stream.

ریشه

From Irish 'eiscir', meaning 'ridge'.

مثال

• The landscape was marked by the long, winding shape of an esker.
• Eskers are often sources of sand and gravel.
• The esker was formed by glacial activity thousands of years ago.

ترکیب‌های رایج

Glacial esker Esker formation Esker deposit