Glaciated Lowlands Landforms

In the lowlands of glaciated regions, deposition is the dominant process . Continental ice sheets and glaciers leave eroded materials behind in restricted areas.

On these glaciated lowlands appear rock masses, projected above the level surface, creating striking features of erosion, such as Roche moutonnée, Crag and tail.

1. Roche Moutonnée:

Roche moutonnée is a rock formation created by the passing of a glacier. It is a resistant rock. Its surface is striated as a result of ice movement. The upstream side or stoss side is smoothened by the abrasive process, while plucking roughens its downstream side or leeward sideThe leeward side is the side or direction that is sheltered from the wind — it is the opposite side of where the wind is coming from. More, which is steeper.

The Roche moutonnee feature is found in both highlands and lowlands of glaciated regions.

2. Crag and Tail:

A crag is a massive rock, a larger mass than a Roche moutonnée, that is very steep at the upstream or stoss side slope. It protects the softer leeward slope from complete erosion by oncoming ice. This implies that