The BGS Lexicon of Named Rock Units — Result Details

Freshwater Gravel Member

Computer Code: FRESH Preferred Map Code: notEntered
Status Code: Full
Age range: Pleistocene Epoch (QP) — Pleistocene Epoch (QP)
Lithological Description: Generally clayey sandy gravel with thin sand units of limited lateral extent.
Definition of Lower Boundary: Erosional base on bedrock.
Definition of Upper Boundary: Present land surface.
Thickness: Estimated to be between 2 and 5m thick from the outcrop.
Geographical Limits: Limited to three small outcrops in the area around Norton Green near Freshwater in the Western Yar Valley.
Parent Unit: Western Yar River Formation (WYAR)
Previous Name(s): Plateau Gravel (PLG)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Three outcrops around Norton Green adjacent to Golden Hill Fort, Copse Lane and Hill Lane. 
Reference(s):
White, H J O. 1921. A short account of the geology of the Isle of Wight. Memoir of the Geological Survey of Great Britain, (1994 reprint). 
British Geological Survey, 1976. Isle of Wight. England and Wales Special Sheet incorporating parts of sheets 330,331,344,345. Bedrock and Drift 1:50 000. (Keyworth, Nottingham: British Geological Survey). 
British Geological Survey. 2013. Isle of Wight. England and Wales Special Sheet incorporating parts of sheets 330,331,344,345. Bedrock and Superficial Deposits. 1:50 000. (Keyworth, Nottingham: British Geological Survey) 
Hopson, P M, and Farrant A R. 2014. Geology of the Isle of Wight - a brief explanation of the Isle of Wight Special Geological Map Sheet. Sheet Explanation of the British Geological Survey. Parts of 1:50 0000 Sheets 330 (Lymington), 331 (Portsmouth), 344 (Chale) and 345 (Ventnor) (England and Wales) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable