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 Series (O1) — Tremadoc Series (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):
Lapworth, C, 1899. Sketch of the geology of the Birmingham district, with special reference to the long excursion of 1898. Proceedings of the Geologists' Association, 15, 313-415. 
Gibson, W and Watts, W W, 1898. Lickey Hills 67-69 in Summary of Progress for 1897. Geological Survey (London: HMSO). 
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). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E183