The BGS Lexicon of Named Rock Units — Result Details

Sidgwick Avenue Member

Computer Code: SKAV Preferred Map Code: notEntered
Status Code: Full
Age range: Quaternary Period (Q) — Quaternary Period (Q)
Lithological Description: Sand and fine to medium gravel in upper part overlying interbedded marl and sandy fine gravel or laminated fine sand with plant debris and molluscs.
Definition of Lower Boundary: Unconformable on Gault mudstone bedrock.
Definition of Upper Boundary: At surface.
Thickness: Up to about 6m, but more commonly between 2.5 and 4m.
Geographical Limits: Restricted to area adjacent to Sidgwick Avenue, Cambridge, may be extended to cover other areas mapped as 2nd terrace of the River Cam.
Parent Unit: Cam Valley Formation (CAMV)
Previous Name(s): none recorded or not applicable
Alternative Name(s): 2nd Terrace Of River Cam
Stratotypes:
Type Area  Area of 2nd terrace adjacent to Sidgwick Avenue on west side of River Cam. Lambert et al, 1963 
Reference(s):
Lambert, C A, Pearson, R G and Sparks, B W. 1963. A flora and fauna from late Pleistocene deposits at Sidgwick Avenue, Cambridge. Proceedings of the Linnean Society, 174, 13-29. 
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 E205