The BGS Lexicon of Named Rock Units — Result Details

Beenham Grange Gravel Member

Computer Code: BGGR Preferred Map Code: SYMB
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Represents the deposits of the second terrace of the Kennet valley on BGS maps. Gravel, variably sandy and clayey.
Definition of Lower Boundary: Sharp erosional base on Cretaceous-Tertiary bedrock.
Definition of Upper Boundary: The terrace, which is modified by erosion, lies 1-3 m above Kennet Floodplain.
Thickness: Up to 10 m of gravel underlying the terrace surface.
Geographical Limits: Kennet Valley.
Parent Unit: Kennet Valley Formation (KNTV)
Previous Name(s): Valley Gravel (VLGR)
Beenham Grange Gravel [Obsolete Name and Code: Use BGGR] (-2601)
Valley Gravel (VLGR)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Kennet Valley, Newbury - Reading and Pangbourne. 
Reference(s):
Worsley, P and Collins, P E F. 1995. The geomorphological context of the Brimpton Late Pleistocene succession. Proceedings of the Geologists' Association, Vol.106, 39-45. 
Chartres, C J, 1975. Soil Development on the terraces of the River Kennet, PhD Thesis, University of Reading. 
Cheetham, C H, 1975. Late Quaternary palaeohydrology with reference to the Kennet Valley, PhD Thesis, University of Reading. 
McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E268