The BGS Lexicon of Named Rock Units — Result Details

Barnt Green Volcanic Formation
Computer Code: BGV Preferred Map Code: BGV
Status Code: Full
Age range: Tremadoc Epoch (O1) — Tremadoc Epoch (O1)
Lithological Description: Crystal and crystal lithic tuffs, tuffaceous siltstones, sandstones and mudstones.
Definition of Lower Boundary: Not known.
Definition of Upper Boundary: Uncertain - probable upward passage into Lickey Quartzite Formation.
Thickness: Not known.
Geographical Limits: Small area (fault boundries) immediately northwest of Barnt Green, Hereford and Worcester.
Parent Unit: Not Applicable (-)
Previous Name(s): Barnt Green Volcanic Series (-694)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  Small exposures around Kendal End Farm. Gibson, W and Watts, W W, 1898; Lapworth, C, 1899. 
Reference(s):
Old, R A, Hamblin, R J O, Ambrose, K and Warrington, G, 1991. Geology of the country around Redditch. Memoir of the British Geological Survey Sheet 183 (England and Wales). 
Lapworth, C, 1899. Sketch of the geology of Birmingham district with special reference to the long excursion of 1898. Proceedings of the Geologists' Association, II, 315-415. 
Gibson, W and Watts, W W, 1898. Lickey Hills 67-69 in Summary of Progress for 1897. Geological Survey (London: HMSO). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E183
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