The BGS Lexicon of Named Rock Units — Result Details

Headley Heath Member

Computer Code: HDY Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Pliocene Epoch (NP) — Pliocene Epoch (NP)
Lithological Description: Silty, sandy, gravelly clay.
Definition of Lower Boundary: Rests unconformably on bedrock (Chalk), occupying cavities.
Definition of Upper Boundary: Ground surface.
Thickness: none recorded or not applicable
Geographical Limits: Reigate and Dorking District.
Parent Unit: Clay-with-flints Formation (CWF)
Previous Name(s): Headley Formation (-4702)
Alternative Name(s): none recorded or not applicable
Type Area  Headley Heath. Dines and Edmunds, 1933. 
Dines, H G and Edmunds, M A. 1933. The geology of the country around Reigate and Dorking. Memoir of the Geological Survey England and Wales, Sheet 286. 
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: