Here's a breakdown of how it forms:
* Formation: Corries are formed by glacial erosion. As a glacier sits in a hollow on a mountainside, it erodes the surrounding rock and ice by:
* Abrasion: Rocks embedded in the ice scrape against the bedrock.
* Plucking: Melting water seeps into cracks in the bedrock, freezes, and expands, breaking off chunks of rock.
* Shape: The corrie's shape is a result of this erosion. The steep back wall is formed by plucking, while the bowl-shaped depression is a result of both abrasion and plucking.
* Features: Corries often have a lip at their lower end, which is formed by the ice piling up as it moves out of the corrie. They can also have a tarn, which is a small lake that forms in the corrie when the ice melts.
In summary: Corries are distinctive features of glacial landscapes, showcasing the power of ice erosion.
