| Computer Code: |
LYMS |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| 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: |
8 m. |
| 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): |
| 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. |
| 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. |
| 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.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E314
E328
E329
E341
E342
E343
|
