The document discusses various coastal landforms created by wave erosion and deposition along shorelines. It describes how alternating bands of hard and soft rock lead to the formation of headlands and bays through differential erosion. As waves erode the soft rock faster than the hard rock, an irregular coastline develops. Further erosion can form caves, arches, stacks, and stumps. Coves are formed when a stream cuts through a cliff, widening through erosion. Wave-cut platforms are flat terraces exposed when cliffs retreat inland. Longshore drift can build up spits, narrow accumulations of sand and gravel stretching from the shore into the sea.

1. Coastal Features Higher Geography Lithosphere

2. ‘ A recent estimate of the coastline of England and wales is 2750 miles and it is very rare to find the same kind of coastal scenery for more than 10 to 15 miles together’ J.A. Sheers, The Coastline of England and Wales, 1969

5. Waves

8. The sea kayak is 4m long

9. The sea kayak is 4m long

10. The sea kayak is 4m long

16. The waves at work Waves have energy. That means they can work. They work non-stop, night and day shaping the coastline.

17. Erosion Waves erode in the same way as rivers

20. Transport

22. Coastal Landforms Old Harry Rocks in Dorset

26. This coastlines is made of different rock types, some hard, some soft. Once upon a time it was straight.

27. This coastline consists of parallel bands of hard and soft rock which were perpendicular to the sea. As a result of differential erosion, the bands of soft rock are eroded much more quickly than the bands of resistant rock to form bays and headlands . The headland is eroded back as a result of wave refraction. Caves , arches , stacks and stumps will form which will eventually be eroded away. The bays will advance as deposition will take place at their heads to form Beaches . Eventually, the coastline will become straight again and the whole process of differential erosion will start again and result in an irregular coastline.

29. As waves enter the shallow waters of the headland, the influence of the shallow waters causes the wave fronts to bent and get refracted. Due to the wave refraction, wave energy is more concentrated towards headlands and dissipated towards bays. Differential rates of erosion along a coast with alternate bands of hard and soft rocks results in an irregular coastline - Headland and Bay. Marine processes - hydraulic action and corrosion erode along lines of weakness (e.g. joints, faults and bedding planes).

30. The top portion of the sea caves becomes an arch, linking the tip of the headland with the mainland. Continuous erosion causes back-to-back caves to extend backward until the sea caves meet and a natural tunnel is formed. When the arch collapses, the sea ward pillar is left standing and becomes a stack. Continual wave erosion eventually reduces the stack into a stump.

39. Coves Lulwoth Cove, Dorset

41. Stair Hole Lulworth Cove Stair Hole Lulworth Cove

43. Cove formation (1) The Lulworth coast was once a solid cliff with a stream running down to the sea

44. Cove formation (2) Once breached, the softer cliffs behind were rapidly eroded

45. Cove formation (3) This process continues for many years

46. Lulworth today

48. Lulworth tomorrow!

49. The next Durdle Door could well form between Lulworth Cove and Stair Hole

50. The future? Could Lulwoth become like Manowar Cove, Dorset Coast? Old Lulworth Cove? Old Stair Hole? Place of old arch? Sea Stump

51. Wave Cut Platforms

52. Destructive waves at an exposed coast erode a steep coastal slope through processes like hydraulic action and abrasion . The waves erode along lines of weakness in the rock face to form a notch. Continued erosion enlarges the notch and causes its roof to collapse, and a cliff is formed. Further undercutting at the base of the cliff results in an overhanging cliff which eventually collapses. As the steep cliff retreats landwards, a flat terrace at the foot of the cliff is exposed - wave-cut platform. The eroded materials which are transported away may be deposited in the sea to form an offshore terrace.

55. Coastal Spits

57. The end of spit is curved by the waves Direction of longshore drift

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