Speeton Clay Formation, Geological formation in Yorkshire coast, England
The Speeton Clay Formation stretches along Filey Bay for 1.5 kilometers between Reighton Gap and Dulcey Dock, featuring varied mudstone and clay beds.
Phillips introduced the term Speeton Clay in 1829, establishing a foundation for understanding the Lower Cretaceous marine deposits in northern England.
The formation contains marine fossils from the Early Cretaceous period, including belemnites, ammonites, and the preserved remains of ancient lobster species.
The formation reaches thicknesses of 100 meters at outcrop locations, with deeper sections extending to 400 meters below the surface.
The alphabetically labeled beds from E to A contain distinct features such as the Coprolite Bed and the Greensand Streak in layer A7.
Location: Yorkshire
GPS coordinates: 54.20000,-0.20000
Latest update: March 4, 2025 12:15
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