Tag: Oxford Clay

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Tidmoor Point

Tidmoor Point, on the edge of The Fleet lagoon opposite Chesil Beach, is a small but highly productive Oxford Clay locality. Best known for its pyritised and limonitic ammonites, the low cliffs and foreshore regularly yield a wide range of fossils, including belemnites, crinoids, crustaceans, fish and occasional reptile remains. Despite its modest size, it remains one of the most reliable sites for collectors searching for well-preserved Jurassic fossils. Jurassic, Cliffs and Foreshore, Rating: ♦♦♦♦
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Redcliff Point

Redcliff Point is one of Dorset’s most rewarding Upper Jurassic fossil localities, exposing both the fossil-rich Oxford Clay Formation and the overlying Corallian Group within a spectacular coastal setting. The foreshore yields a diverse range of fossils, including ammonites, belemnites, large bivalves, trace fossils and occasional vertebrate remains, while the Oxford Clay has historically produced marine reptiles and giant oysters such as Gryphaea dilatata. Fresh erosion, heavy rain and scouring tides regularly expose new material, making this an excellent destination for the dedicated fossil collector.
Jurassic, Cliffs and Foreshore, Rating: ♦♦♦♦
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Locality photograph of Cayton Bay

Cayton Bay

Cayton Bay exposes a varied, faulted Jurassic coast where ammonites, bivalves, gastropods and brachiopods occur in several different rock units. Its famous Tenants’ Cliff concretions preserve remarkable shells, while sand cover, landslips and tidal exposure make both fossil finding and safe access highly changeable. Jurassic, Cliffs and Foreshore, Rating: ♦♦♦

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Yaxley (Hampton Vale)

The flooded brickpits at Yaxley, beside Hampton Vale, preserve a glimpse of the Middle Jurassic sea beneath modern Peterborough. Weathering of the fossil-rich Oxford Clay has yielded oysters, belemnites, ammonites and occasional marine-reptile remains along the lake embankment. The exposed shore changes with water level and vegetation, and access to lakeside paths does not automatically permit collecting on the banks. Check current signs and obtain permission before leaving the paths or removing material. Jurassic, Lake Embankment, Rating: ♦♦♦♦♦

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King’s Dyke Pit

King’s Dyke combines a history of important Jurassic reptile discoveries with a managed fossil hunting area supplied with Oxford Clay from the quarry. Oysters, belemnites and delicate ammonites are characteristic finds in this material. Visits depend on current opening arrangements, a membership permit and gate code; ordinary access following the reserve’s stabilisation closure has not been confirmed. Jurassic, Working Quarry, Rating: ♦♦

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Rock ledges, boulders and tidal pools below the cliffs on the Balintore foreshore.

Balintore

South of Balintore, Jurassic foreshore ledges at Port-an-Righ and Cadh’-an-Righ lie against Devonian sandstone along the Great Glen fault system. Oysters and belemnites occur here, while red-weathering ironstone nodules preserve ammonites. The best exposures depend on low tides and the shifting cover of sand and shingle. Jurassic, Cliffs and Foreshore, Rating: ♦♦

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Dunans

Dunans has a delightful little secluded beach that has an exposure of soft grey Oxford Clay at the high tide mark. A variety of fossils can be picked from the clay shale lying at the foot of the exposure and patches of fresh clay bedrock are often revealed on the lowest of tides. Jurassic, Cliffs and Foreshore, Rating: ♦♦♦♦