OCR GCSE Geography B Paper 1 (J384/01) - 17th May 2024 [Exam Chat]

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Yes, geology does influence the geomorphic processes that influence the formation of coastal landforms: Some geomorphic processes can only take place with certain rock types and can affect the landforms along the coastline. For an arch to become a stack, for example, weathering needs to take place on the top of the arch such as the process of carbonation (part of chemical weathering). This breakdowns the top of arch as even with high wave during a storm, waves are unlikely to affect the arch such that it will turn into a stack. An example of this is for an arch such as Durdle Door to become stack such as Old Harry’s Rock.

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No, geology does not influence the geomorphic processes that influence the formation of coastal landforms: Some geomorphic processes can take place regardless of the geology of the coastline. An example of this is the freeze-thaw weathering causing mass movement and can influence the aesthetics of a cliff. This is because any rock type is likely to have crack in them which can become prone to freeze-thaw (part of physical/mechanical weathering) weathering when as long as there is some sort of rainfall occurring along the coast, causing rocks to fall (part of mass movement) making a cliff to retreat over time and can assist the formation of a bay.

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Conclusion: Yes to some extent because geology can influence the geomorphic processes that takes place but this is only limited to some geomorphic processes and can upon other factors such as weather.