The BGS Lexicon of Named Rock Units — Result Details

Thanet Formation

Computer Code: TAB Preferred Map Code: TS
Status Code: Full
Age range: Thanetian Age (GT) — Thanetian Age (GT)
Lithological Description: Glauconite-coated, nodular flint at base, overlain by pale yellow-brown, fine-grained sand that can be clayey and glauconitic. Rare calcareous or siliceous sandstones.
Definition of Lower Boundary: Drawn at base of unworn, glauconite-coated flint of the Bullhead Bed; it rests unconformably on micritic limestone of the Chalk Group.
Definition of Upper Boundary: Drawn at unconformable boundary marked by upward change from fine-grained sands of the Thanet Formation to glauconitic sand of the Woolwich and Reading Beds.
Thickness: 0-30m
Geographical Limits: London Basin, as far north as Ipswich.
Parent Unit: Not Applicable (-)
Previous Name(s): Thanet Formation (TAB)
Thanet Sands Formation (-3708)
Thanet Sands (-1856)
Thanet Beds (-2473)
Thanet Sand [Obsolete Name And Code: Use TAB] (TS)
Alternative Name(s): none recorded or not applicable
Type Area  Herne Bay, north Kent: coast section. 
Reference Section  Coast cliffs, Pegwell Bay, Hoverport. 
Jolley, D W, 1992. Palynofloral association sequence stratigraphy of the Palaeocene Thanet Beds and equivalent sediments in eastern England. Review of Palaeobotany and Palynology, Vol.74, p.207-237. 
Ward, D J, 1977. The Thanet Beds exposure at Pegwell Bay, Kent. Tertiary Research, Vol.1, p.69-76. 
Ward, D J, 1978. The Lower London Tertiary (Palaeocene) succession of Herne Bay, Kent. Institute of Geological Sciences, Report 78/10. 
Curry, D, Adams, C G Boulter, M C, Dilley, F C, Eames, F E, Funnell, B M and Wells, M K. 1978. A Correlation of Tertiary rocks in the British Isles. Geological Society of London Special Publication , Vol.12, 1-72. 
Strong, G E, 1984. Petrography of Thanet Beds samples from the Ramsgate area, Kent. Institute of Geological Sciences, Petrology Unit, Report 260. 
Whitaker, W. 1866. On the "Lower London Tertiaries" of Kent. Quarterly Journal of the Geological Society London, Vol.22, 404-435. 
Wooldridge, S W, 1926. The structural evolution of the London Basin. Proceedings of the Geologists' Association, Vol.37, p.162-196. 
Prestwich, J, 1852. On the structure of the strata between the London Clay and the Chalk, etc, part 111. The Thanet Sands. Quarterly Journal of the Geological Society, Vol.8, p.235-268. 
Prestwich, J, 1888. Further observations on the correlation of Eocene strata in England, Belgium and the north of France. Quarterly Journal of the Geological Society, Vol.44, p.88-111. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E285 E206 E207 E222 E240 E241 E257 E258 E259 E271 E272 E273 E274 E270 E256 E269 E162