The BGS Lexicon of Named Rock Units — Result Details

Lytchett Matravers Sand Member

Computer Code: LYMS Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Ypresian Age (GY) — Ypresian Age (GY)
Lithological Description: Fine-grained, commonly ferruginous cemented sand. Flint pebble beds are present locally and glauconite may occur in the basal beds.
Definition of Lower Boundary: Sharp contact (and sharp feature break, locally associated with springs) on the clay above the Warmwell Farm Sand.
Definition of Upper Boundary: Sharp contact with the clay above the Lytchett Matravers Sand. Underlies the unconformable base of the Poole Formation on the north side of Wimborne.
Thickness: 8m.
Geographical Limits: The area around Bournemouth, Dorchester and Swanage.
Parent Unit: London Clay Formation (LC)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  The area of Lytchett Matravers, Dorset. Temporary exposures only. Bristow et al. (1991). 
Reference(s):
British Geological Survey. 2004. Ringwood. Sheet 314 (England and Wales). Solid and Drift Geology. (Keyworth, Nottingham: British Geological Survey) 
Bristow, C R. 1999. The geology of the Wareham, Arne, Creech and Corfe Castle area, Dorset. British Geological Survey Technical Report, WA/99/43 (Keyworth, Nottingham). 
Bristow, C R, Freshney, E C and Penn, I E. 1991. Geology of the country around Bournemouth. Memoir for 1:50 000 geological sheet 329 (England and Wales). HMSO, London. 
King, C. In press. A correlation of Tertiary rocks in the British Isle and adjacent areas. Special Report of the Geological Society of London, No.12. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E314 E328 E329 E341 E342 E343