The BGS Lexicon of Named Rock Units — Result Details

Little Wibraham Member

Computer Code: LWIB Preferred Map Code: notEntered
Status Code: Full
Age range: Quaternary Period (Q) — Quaternary Period (Q)
Lithological Description: Sand and gravel, brown, with flint, chalk and quartzite pebbles.
Definition of Lower Boundary: Unconformable on Cretaceous Chalk.
Definition of Upper Boundary: At surface.
Thickness: At least 3m (Penning and Jukes-Browne,1881).
Geographical Limits: Restricted to several outcrops of sand and gravel between Cambridge and Little Wilbraham in the Cam valley, Cambridgeshire.
Parent Unit: Cam Valley Formation (CAMV)
Previous Name(s): none recorded or not applicable
Alternative Name(s): 4th Terrace Of River Cam
Stratotypes:
Type Area  Extensive outcrop to north and north-west of Little Wilbraham. Penning and Jukes-Browne, 1881. 
Reference(s):
Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. 
Penning, W H and Jukes-Browne, A J, 1881. Geology of the neighbourhood of Cambridge. Memoir of the Geological Survey, Old Series Sheets 51SW and part 51NW (England and Wales). 
Worssam, B C and Taylor, J H. 1969. The geology of the country around Cambridge. Memoir of the Geological Survey of Great Britain, Sheet 188 (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E188