The BGS Lexicon of Named Rock Units — Result Details

Great Row Member

Computer Code: GTR Preferred Map Code: notEntered
Status Code: Full
Age range: Bolsovian Substage (CC) — Bolsovian Substage (CC)
Lithological Description: Grey mudstones and siltstones with seatearths, numerous ironstones and thick coals. Channel sandstones are locally important.
Definition of Lower Boundary: Base of the Cannel Row Coal.
Definition of Upper Boundary: Base of the Bassey Mine Coal.
Thickness: Up to 92 m in Parkhouse Colliery.
Geographical Limits: North Staffordshire Coalfield, although not shown on the map.
Parent Unit: Pennine Upper Coal Measures Formation (PUCM)
Previous Name(s): Great Row Measures (-2836)
Great Row Formation (-4691)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Holts Barn Borehole SJ93NW/2: full thickness from 423.75 m to 376.0 m depth. Earp & Calver, 1961. 
Reference(s):
Rees, J G and Wilson, A A. 1998. Geology of the country around Stoke-on-Trent. Memoir of the British Geological Survey, Sheet 123 (England and Wales). 
Earp, J R and Calver, M A. 1961. Exploratory boreholes in the North Staffordshire Coalfield. Bulletin of the Geological Survey of Great Britain, Vol. 17, 153-190. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E123