The BGS Lexicon of Named Rock Units — Result Details

Hollybush Sandstone Formation

Computer Code: HOS Preferred Map Code: HoS
Status Code: Full
Age range: Comley Series (EC) — Comley Series (EC)
Lithological Description: Dark green, flaggy, micaceous sandstone with abundant chlorite and glauconite (Groom, 1902; Worssam and others, 1989).
Definition of Lower Boundary: Conformable on Malvern Quartzite.
Definition of Upper Boundary: Conformable junction with White-Leaved Oak Shale.
Thickness: c.300m
Geographical Limits: South Malvern Hills.
Parent Unit: Not Applicable (-)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Hollybush Quarry. 
Reference(s):
Groom, T T, 1899. The geological structure of the southern Malvern Hills and of the adjacent areas to the west. Quarterly Journal of the Geological Society of London, Vol.55, p.129-169. 
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. 
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). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E216