Note:  Do not rely on this information. It is very old.

Thanet Sands

Thanet Sands, a series of pale-yellow, or occasionally greenish, sands, forming the base of the Eocene system in the London basin, corresponding to the sables de Bracheax of the Paris area, but not represented in Hampshire. They contain some clay partings, and at their base the "Bull-head bed" of green-coated flints resting on the Chalk. In the Isle of Thanet they reach a thickness of 60 feet, but thin away at Sudbury (Suffolk) and Ealing (Middlesex). Though fossils are rare in these beds, some 70 species mostly marine, have been found, including sharks'-teeth, a nautilus, an oyster and many other pelecypods, and several foraminifera.