The BGS Lexicon of Named Rock Units — Result Details

Clay-with-flints

Computer Code: CWFL Preferred Map Code: notEntered
Status Code: Full
Age range: Paleogene Period (G) — Pleistocene Epoch (QP)
Lithological Description: Clay-with-flints is a reddish brown, stiff, clay containing abundant clasts of orange-brown stained nodular and broken flints, commonly associated with deposits of sand, sandy clay, silt, loam and pebbles that have been mixed with the clay by solution, cryoturbation and solifluction. Clay-with-flints as applied by BGS is a product of the solution of the chalk and the incorporation of residual material from Palaeogene deposits, mainly the Reading Formation. It occurs mainly in southern England resting on, and in places filling, solution pipes in the chalk.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Residual deposits (RDEPS)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
McMillan, A A and Powell, J H. 1999. The classification of artificial (man made) ground and natural superficial deposits. British Geological Survey Research Report, RR/99/04. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable