The BGS Lexicon of Named Rock Units — Result Details

Abbrook Clay and Sand Member

Computer Code: AB Preferred Map Code: notEntered
Status Code: Full, pending ratification
Age range: Eocene Epoch (GE) — Oligocene Epoch (GO)
Lithological Description: Non-carbonaceous, high silica clays and sands, generally grey, but with subordinate brown clays, sometimes silty. Clay breccias occur locally. Rare lignites.
Definition of Lower Boundary: Rests conformably on the Lappathorn Member which is pink in colour and contains ironstone spherules.
Definition of Upper Boundary: Passes up into the Southacre Clay and Lignite Member, which contains a significant amount of lignite.
Thickness: 50 m.
Geographical Limits: Bovey Basin, Devon.
Parent Unit: Bovey Formation (BOF)
Previous Name(s): Abbrook Clay And Sand (-1296)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  Junction between the Abbrook Clay and Sand Member and the Southacre Clay and Lignite Member exposed in White Pit. The type area is the Bovey Basin, between Bovey Tracey and Newton Abbot in Devon (Selwood et al., 1984). 
Reference(s):
Edwards, R A. 1970. The geology of the Bovey Basin. Unpublished PhD thesis, University of Exeter. 
Selwood, E B, Edwards, R A, Simpson, S, Chesher, J A, Hamblin, R J O, Henson, M R, Riddolls, B W and Waters, R A. 1984. Geology of the countryside around Newton Abbot. Memoir of the British Geological Survey, Sheet 339 (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E339