Glacial Landforms

    Cards (8)

    • Corries
      • snow gathers in a hollow and compresses into ice
      • freeze-thaw weathering adds rock fragments to the ice
      • Gravity starts pulling the ice down the hill by rotational slip
      • The glacier's rotation and abrasion deepen the hollow
      • When the ice melts, an armchair shape hollow is left which sometimes has a small lake called a tarn
    • Pyramidal peak - form when three corries form back to back
    • Arete - steep ridge that forms when two corries form back to back
    • Hanging valley - Smaller valley joined to a larger valley
    • Ribbon lake - Long, thin lake that forms in a glacial trough
    • Truncated spurs - Interlocking spurs that have been chopped off or truncated by the glacier moving down the valley
    • Drumlin - egg shaped hills formed when material at the base of a glacier hits an obstruction and is deposited
    • Erratic - large boulders left behind by glaciers that are a different rock type to the place where they have been deposited