esker
1. A long, narrow ridge of stratified sand, gravel, and boulders deposited by a subglacial stream flowing beneath a glacier during the last ice age
The esker stretched for miles across the landscape, evidence of ancient glacial activity.
O esker se estendia por milhas pela paisagem, evidência da atividade glacial antiga.
2. A glacial landform characterized by a sinuous ridge that often winds through otherwise flat terrain
Geologists studied the esker formation to understand the movement of ice sheets.
Os geólogos estudaram a formação do esker para entender o movimento das camadas de gelo.
The term 'esker' is primarily used in academic and geological contexts. It is derived from the Irish word 'eiscir' and is commonly encountered in regions with significant glacial history, particularly in North America and Northern Europe. In Brazil and Portugal, the term is mainly used by geologists and earth scientists rather than in general conversation.
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