The BGS Lexicon of Named Rock Units — Result Details

Warren House Formation

Computer Code: WHO Preferred Map Code: WHo
Status Code: Full
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Spilitic basalt lavas, altered intermediate lavas ('keratophyres'), altered rhyolitic lavas, felsic pyroclastic rocks, including ignimbrite.
Definition of Lower Boundary: Tectonic (thrust) contact with Proterozoic Malverns Complex.
Definition of Upper Boundary: Tectonic (East Malvern Fault) with Mercia Mudstone Group.
Thickness: Not known.
Geographical Limits: Tinker's Hill (SO 767 401) to Hangman's Hill (SO 765 390), Malvern Hills, Hereford and Worcester.
Parent Unit: Not Applicable (-)
Previous Name(s): Tuffs [Obsolete Name And Code: Included As Part Of WHO] (EWT)
Warren House "Series" [Obsolete Name And Code: Use WHO] (WHSS)
Warren House Group [Obsolete Name And Code: Use WHO] (EW)
Rhyolites [Obsolete Name And Code: Included as part of WHO] (EWR)
Spilites [Obsolete Name And Code: included as part of WHO] (EWS)
Warren House Volcanic Series (-2532)
Warren House Series (-1917)
Warren House Rocks (-3761)
Warren House Volcanics (-4400)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Outcrop with some scattered exposures extending from Tinker's Hill in the north to Hangman's Hill in the south, and including Broad Down. 
Reference(s):
Tucker, R D and Pharaoh, T C, 1991. U-Pb zircon ages for late Pre-Cambrian igneous rocks in southern Britain. Quarterly Journal of the Geological Society, Vol.148, p.435-443. 
Green, A H, 1895. Notes on some recent sections in the Malvern Hills. Quarterly Journal of the Geological Society, Vol.51, p.1-8. 
Bullard, D, 1989. Malvern Hills. A student's guide to the geology of the Malverns. Nature Conservancy Council. 
Penn, J S W and French, J, 1971. No.4: The Malvern Hills. Geologists' Association Guide. 
Platt, J I, 1933. The petrology of the Warren House Series. Geological Magazine, Vol.70, p.423-429. 
Groom, T T, 1900. On the geological structure of portions of the Malvern and Abberley Hills. Quarterly Journal of the Geological Society of London, Vol.56, 129-169. 
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). 
Pharaoh, T C, Webb, P C, Thorpe, R S and Beckinsdale, R D, 1987. Geochemical evidence for the tectonic setting of late Proterozoic volcanic suites in central England, p.541-552. "In" Geochemistry and mineralisation of Proterozoic volcanic suites. Pharaoh, T C, Beckinsale, R D, and Rickard, D, (Editors). Special Publication of the Geological Society, No.33. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E216 E199