The BGS Lexicon of Named Rock Units — Result Details

Top Three-Quarter Coal (Northumberland And Durham)

Computer Code: TTQ Preferred Map Code: notEntered
Status Code: Index Level
Age range: Langsettian Substage (CA) — Langsettian Substage (CA)
Lithological Description: none recorded or not applicable
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Pennine Lower Coal Measures Formation (PLCM)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Lawrence, D J D and Jackson I. 1990. Geology and land-use planning: Morpeth-Bedlington_Ashington. Part 2: Geology. British Geological Survey Technical Report WA/90/19. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E026