The BGS Lexicon of Named Rock Units — Result Details

Backet'S Copse Gravel Member

Computer Code: BACKC Preferred Map Code: notEntered
Status Code: Full
Age range: Pleistocene Epoch (QP) — Pleistocene Epoch (QP)
Lithological Description: Principally clayey sand and gravel with sand beds of limited lateral extent.
Definition of Lower Boundary: Rests on the eroded surface of bedrock.
Definition of Upper Boundary: Present day land surface.
Thickness: The mapped extent of the deposits suggest that the member is between 2m and 5m thick.
Geographical Limits: Limited to two mapped outcrops within the Western Yar Valley on the eastern flank of the valley, to the east of Freshwater.
Parent Unit: Western Yar River Formation (WYAR)
Previous Name(s): Gravel Terrace (-217)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Two outcrops in the vicinity of Backet's Copse, Freshwater on the eastern flank of the Western Yar Valley. 
Reference(s):
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). 
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. 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