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Glaciation terms
| Term | Definition |
|---|---|
| Glaciated valley | A V-shaped valley straightened and flattened by the movement of a large glacier to become a U-shaped valley |
| Cirque | Also known as a ‘Corrie’, a large hollow on the side of a mountain. It has three steep sides and is the birth place of a glacier |
| Tarn | A lake inside a cirque |
| Pyramidal peak | Steep-sided pyramid-shaped mountain that was eroded on all sides by many cirques |
| Arête | A narrow, steep -sided ridge, usually between two cirques |
| Paternoster lakes | When a long, narrow lake occupies the floor of a glaciated valley, it is called a ribbon lake. When a few ribbon lakes are linked, they are called paternoster lakes. |
| Truncated spur | Originally an interlocking spur that was eroded, having its ‘head’ cut off as the glacier moved through the valley |
| Hanging valley | A small tributary valley that hangs above the main glaciated valley |
| Snowfields | Area of permanent snow and ice supply for the glacier |
| Snout | The front of a glacier where melt-water drips out from |
| Plucking | Pieces of rock are lifted out of place by a moving glacier |
| Abrasion | Plucked rocks are dragged and scraped along the surface under the glacier |
| Erratic | Debris left behind by a melting glacier |
| Drumlin | Rounded, egg shaped hills made of boulder clay created by glacial deposition |
| Outwash plains | Low-land area of fine sand and gravel created by meltwater that dripped and flowed from the snout of the glacier |