The BGS Lexicon of Named Rock Units — Result Details

Ashfield Rider Coal

Computer Code: ADRC Preferred Map Code: notEntered
Status Code: Index Level
Age range: Pendleian Substage (CE) — Pendleian Substage (CE)
Lithological Description: Thin, impersistent coal in the Glasgow-Stirling region. Locally replaces Possil Fourteen Inch Coal or is replaced by sandstone.
Definition of Lower Boundary: Thin coal "cyclothem" overlies Ashfield Coking Coal, within Limestone Coal Formation.
Definition of Upper Boundary: Overlain by fissile mudstone below the Possil Fourteen Inch Coal, Limestone Shale Formation.
Thickness: 0.1m
Geographical Limits: Glasgow area of the Midland Valley, Scotland.
Parent Unit: Limestone Coal Formation (LSC)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Queenslie No 1 Borehole (1949), Glasgow (NS66NE, BH85) at 517m depth. 
Reference(s):
Forsyth, I H and Read, W A. 1962. The Correlation of the Limestone Coal Group above the Kilsyth coking coal in the Glasgow-Stirling region. Bulletin of the Geological Survey of Great Britain No.19, pp29-52. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable