The BGS Lexicon of Named Rock Units — Result Details
Malvern Quartzite Formation
| Computer Code: | MCQ | Preferred Map Code: | MQ |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Comley Series (EC) — Comley Series (EC) | ||
| 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: | Not Applicable (-) | ||
| Previous Name(s): | Hollybush Quartzite and Conglomerate [Obsolete Name and Code: Use MCQ]
(-2314)
Cambrian Quartzite [Obsolete Name and Code: Use MCQ] (-4184) |
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| Alternative Name(s): | Martley Quartzite |
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| Stratotypes: | |||
| Type Area | West side of Malvern Hills. | ||
| Reference Section | Southwest of Gullet Quarry, Worssam and others, 1989. | ||
| Reference Section | Hollybush Quarry, Worssam and others, 1989. | ||
| Reference(s): | |||
| Stubblefield, C J, 1966. The Malvern Lower Cambrian strata. Nature, London, Vol.209, p.1121. | |||
| 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, 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. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E216 | |||