The BGS Lexicon of Named Rock Units — Result Details

High Main Coal (Northumberland And Durham)

Computer Code: HMN Preferred Map Code: HM
Status Code: Index Level
Age range: Duckmantian Substage (CB) — Duckmantian Substage (CB)
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 Middle Coal Measures Formation (PMCM)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Shield Row
Six Quarter
Stratotypes:
none recorded or not applicable
Reference(s):
Jones, J H. 1945. The Northumberland and Durham coal seams. Bulletin of the Institute of Fuel, 89-102. 
Mills, D A C and Holliday, D W. 1998. Geology of the district around Newcastle upon Tyne, Gateshead and Consett. Memoir of the British Geological survey sheet 20 (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E010 E014 E015 E020 E021 E026 E027 E032 E009