Jurassic Coast

Ladram Bay - Sea stacks and the E.Devon AONB

ladram_bay-250Location: Ladram Bay

Rock Type: Red sandstone

Age: Triassic, 245 - 235 million years old

Look out for: Sea stacks, cross bedding, rare fossils.

The geology in detail

The cliffs and stacks at Ladram Bay are made up of a sequence known as the Otter Sandstones; a red coloured soft sandstone. The colour indicates it formed in a desert. This is a good place to see cross bedding in the Otter Sandstone formed by the migration of river channels. Occasionally the rare remains of a strange mammal-like reptile called the Rhynchosaur are eroded from the Otter Sandstone. There are also the remains of plant roots (rhizocretions) here.

The ancient environment

The Otter Sandstones formed after a brief very dry period and was deposited by large braided rivers. The red colour of the rock indicates the landscape must have been arid but, with the rivers offering a source of water, plants could colonise the area. There were also a variety of animals inhabiting this environment including Rhyncosaurs and other early reptiles. The harsh arid conditions and fast flowing rivers at this time meant that remains of these creatures were rarely fossilised.

The AONB

The East Devon AONB includes the entire coast between Orcombe Point and Lyme Regis, excluding only built-up areas around Sidmouth, Beer and Seaton. This means that the East Devon part of the WHS lies entirely within the protection of the AONB and benefits from the beautiful associated landscape inland.
Geo highlights

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