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GCSE Geography · key term
A former river-valley spur whose end has been cut off by a glacier, leaving a steep face.
Used by AQA and Edexcel
Specification 3.1.3.4 · Paper 1
Revise: Glacial Processes and Landforms of ErosionThe much larger glacier cuts through their ends as it moves down the valley. These cut-off ridges become truncated spurs, with steep, cliff-like faces.
Specification 1.12, 1.14 · Paper 1
A former interlocking river-valley spur whose projecting end has been cut away by a glacier.
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As ice moved along the valley, it also eroded the projecting ends of the interlocking spurs. Their cut-off remains are truncated spurs, visible as steep, often triangular rock faces along the trough sides. These help explain why the glaciated valley is straighter than the original winding river valley.
A ridge projecting into a valley that has been cut short by glacial erosion, leaving a steep face.