The BGS Lexicon of Named Rock Units — Result Details

Haffield Breccia Formation
Computer Code: HBR Preferred Map Code: HBr
Status Code: Full
Age range: Stephanian Age (CS) — Cisuralian Epoch (PLC)
Lithological Description: Unsorted clast-supported breccio-conglomerate, weakly cemented; clasts of igneous volcanic and Lower Palaeozoic lithologies.
Definition of Lower Boundary: Unconformable on Coal Measures and older rocks.
Definition of Upper Boundary: Unconformably overlain by Bridgnorth Sandstone Formation.
Thickness: To 75m
Geographical Limits: Malvern - Abberley Hills; equates with Clent Breccia of West Midlands. (Mitchell, and others, 1962).
Parent Unit: Warwickshire Group (WAWK)
Previous Name(s): Haffield Conglomerate (-4088)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Vicinity of Haffield House, Haffield, (Hereford and Worcester) where there are disused quarries. (Worssam, and others, 1989). 
Reference(s):
Phillips, J, 1848. The Malvern Hills compared with the Palaeozoic districts of Abberley, Woolhope, May Hill, Tortworth and Usk. Memoir of the Geological Survey of Great Britain, Vol.2, Part 1. 
Worssam, B C, Ellison, R A, and Moorlock, B S P. 1989. Geology of the country around Tewkesbury. Memoir of the British Geological Survey, Sheet 216 (England and Wales). 
Groom, T T, 1902. The sequence of the Cambrian and associated beds of the Malvern Hills. Quarterly Journal of the Geological Society of London, Vol.58, p.59-135. 
Mitchell, G H, Pocock, R W and Taylor, J H, 1962. Geology of the country around Droitwich, Abberley and Kidderminster. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E216 E199
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