The BGS Lexicon of Named Rock Units — Result Details

MALVERN QUARTZITE FORMATION
Computer Code: MCQ  Status Code: FORMAL ENTRY 
Preferred Map Code: MQ 
Age or Age Range: [ EC ] EARLY CAMBRIAN  to [  ]  
Lithological Description:
Pale grey, quartz-cemented sandstones and interbedded conglomerates. Conglomerates contain mainly quartz pebbles, but also Malverns Complex and volcanic lithologies. 
Definition of Lower Boundary:
Unconformable or in faulted contact with the Precambrian Malverns Complex. 
Definition of Upper Boundary:
Conformable junction with Hollybush Sandstone. 
Thickness:
Difficult to estimate, but possibly up to 60m (Worssam and others, 1989). 
Geographical Limits:
Malvern Hills area, Hereford and Worcester. 
Parent Unit: Parent Unit Code:
NO IMMEDIATE PARENT [HIERARCHY CODE: NO PARENT OF THE NEXT HIGHER RANK IS IDENTIFIED]  NOPAR
Previous Name(s): Previous Code(s):
CAMBRIAN QUARTZITE   
HOLLYBUSH QUARTZITE AND CONGLOMERATE   
Alternative Name(s):
MARTLEY QUARTZITE = MALVERN QUARTZITE. 
Stratotypes:
Reference Section  Southwest of Gullet Quarry, Worssam and others, 1989. 
Reference Section  Hollybush Quarry, Worssam and others, 1989. 
Type Area  West side of Malvern Hills. 
Reference(s):
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. 
Stubblefield, C J, 1966. The Malvern Lower Cambrian strata. Nature, London, Vol.209, p.1121. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
Map Code Sheet Name
E  216

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