EQ1 Tintagel + Dorset Flashcards
Context of tintagel
-Located in North Cornwall
What is the coastline composed of? (tintagel)
-Old slate, formed under great pressure
How does geology control the coastline in tintagel
-Faults are formed when the pressure to which a rock is subjected to exceeds its internal strength causing it to fracture.
-Fault can be exploited by sea to form micro features like at Tintagel.
Context of Dorset coastline
-It is a jurassic coastline (95 mile long)
-Located in Southern England
How does geology control the coastline at dorset?
-Durdle door is a natural arch, formed by a layer of hard limestone, standing almost vertically out of the sea.
-In concordant coastlines, rock strata or folds run parallel to coast like in south dorset.
How does geology control the dorset coastline?
Once marine action has breached the relatively resistant wall of limestone, it reaches weak shales which are easy to erode into COVES
- e.g, lulworth cove
Neighbouring coves can come together form a wide bay such as Mupe bay.