Bracklesham Group

The Bracklesham Group (formally Bracklesham Beds), in geology, is a series of clays and marls, with sandy and lignitic beds, in the Middle Eocene of the Hampshire Basin, England.^[1]

The type section of the Bracklesham Group is on the Isle of Wight, and it is also well developed on the mainland. The Group has its name from a section at Bracklesham in Sussex. The thickness of the deposit is around 120 m.^[1] Fossil mollusca are abundant, and fossil fish are to be found, as well as Palaeophis, a sea-snake, and Puppigerus, a sea turtle. Nummulites and other foraminifera also occur.

The Bracklesham Group lies between the Barton Clay above and the Bournemouth Beds,^{[citation needed]} Lower Bagshot, below. In the London Basin these beds are represented only by thin sandy clays in the Middle Bagshot group. In the Paris Basin the "Calcaire grossier" lies upon the same geological horizon.

References

• F. Dixon, Geology of Sussex (new ed., 1878)
• F. E. Edwards and SV Wood, Monograph of Eocene Mollusca, Palaeontographical Soc. vol. i. (1847–1877)
• Geology of the Isle of Wight, Mem. Geol. Survey (2nd ed., 1889)
• C. Reid, The Geology of the Country around Southampton, Mem. Geol. Survey (1902).
• soton united kingdom

 This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press