The BGS Lexicon of Named Rock Units — Result Details

Stourmouth Silt Member

Computer Code: STMH Preferred Map Code: notEntered
Status Code: Full
Age range: Thanetian Age (GT) — Thanetian Age (GT)
Lithological Description: Interbedded greenish or greyish brown glauconitic silt, some sandy, and silty clay.
Definition of Lower Boundary: The base of the Stourmouth Silt Member is taken at the upwards disappearance of the fine-grained sands of the Base Bed Member (BSBD).
Definition of Upper Boundary: The top of the Stourmouth Silt Member occurs at the upwards appearance of fine-grained sand, within the Pegwell Silt Member (PGWS).
Thickness: Up to 4.4m
Geographical Limits: Kent and Essex.
Parent Unit: Thanet Formation (TAB)
Previous Name(s): Stourmouth Clays (-5094)
Alternative Name(s): none recorded or not applicable
Type Section  Cliffs near Little Cliffsend, Pegwell Bay, Kent. Curry, 1981; Daley, 1999b; Ward, 1977; Haynes, 1956. 
Haynes, J. 1956. Certain smaller British Paleocene foraminifera. Contributions from the Cushman Foundation for foraminiferal research, Vol. 7, 79-101. 
Knox, R W O. 1996. Tectonic controls on sequence development in the Palaeocene and earliest Eocene of southeast England: implications for North Sea stratigraphy. 209-230 in Sequence Stratigraphy in British Geology. Hesselbro, S P, and Parkinson, D N (editors). Geological Society of London Special Publication, No. 103. 
Ali, J R, and Jolley, D W. 1996. Chronostratigraphic framework for the Thanetian and lower Ypresian deposits of southern England. Geological Society, London, Special Publications, Vol. 101, 129-144. 
King, C. in prep. A revised correlation of Palaeogene and Neogene deposits in the British Isles. Geological Society of London Special Report. 
Daley, B. 1999. London Basin: eastern localities, In: Daley, B., Balson, P. (Eds.), British Tertiary Stratigraphy. Geological Conservation Review Series 15, pp. 23-72. 
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. 
Curry, D. 1981. Thanetian. 255-265 in Stratotypes of Palaeogene stages. POMEROL, C (editor). Mémoire Hors Série du Bulletin d'Information des Géologues du Bassin du Paris, No. 2. 
Aldiss, D.T., 2012. The stratigraphical framework for the Palaeogene successions of the London Basin, UK. British Geological Survey Open Report OR/12/004. Available from 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable