Erosional landforms 2 (Edexcel GCSE Geography A): Flashcards
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Shape of glacial trough cross-section
Shape of glacial trough cross-section
U-shaped profile
Original valley shape before glacier erosion
Original valley shape before glacier erosion
V-shaped river valley
Erosion: rock debris grinding valley like sandpaper
Erosion: rock debris grinding valley like sandpaper
Abrasion
Erosion: glacier freezes to bedrock & pulls away rock
Erosion: glacier freezes to bedrock & pulls away rock
Plucking
OS map feature showing glacial trough valley sides
OS map feature showing glacial trough valley sides
Widely spaced contour lines
OS map feature showing glacial trough floor
OS map feature showing glacial trough floor
Flat valley floor (no contour lines)
Ridges projecting alternately in pre-glacial valleys
Ridges projecting alternately in pre-glacial valleys
Interlocking spurs
How truncated spurs form
How truncated spurs form
Glaciers cut through lower portions of interlocking spurs
Cause of hanging valley formation
Cause of hanging valley formation
Different erosion rates: main vs tributary glaciers
What hanging valleys often create
What hanging valleys often create
Waterfalls
Long narrow lakes in glacial troughs
Long narrow lakes in glacial troughs
Ribbon lakes
Where ribbon lakes form in glacial troughs
Where ribbon lakes form in glacial troughs
Over-deepened sections of trough floor
Valley profile created by truncated spurs
Valley profile created by truncated spurs
Straight valley profile