The BGS Lexicon of Named Rock Units — Result Details
Great Mine Limestone
| Computer Code: | GML | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Asturian Substage (CAS) — Asturian Substage (CAS) | ||
| Lithological Description: | Limestone [no further details currently available] | ||
| Definition of Lower Boundary: | The lower boundary is taken at the base of the first limestone-dominated unit above the base of the mudstone and sandstone of the Halesowen Formation. | ||
| Definition of Upper Boundary: | The upper boundary is taken at the base of a mudstone and sandstone dominated succession of the Halesowen Formation above limestone of the Great Mine Limestone. | ||
| Thickness: | 1.5 to 2.7m | ||
| Geographical Limits: | Between Ancoats [SJ 8560 9865] and Belle Vue [SJ 8740 9640], Greater Manchester. | ||
| Parent Unit: | Halesowen Formation (HA) | ||
| Previous Name(s): | Main Limestone
(ML)
Main Limestone (ML) Three Yards Limestone [Obsolete Name and Code: Use GML] (-287) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | A complete section was formerly exposed in exposures along the River Medlock (east Manchester); presently unexposed. Roeder, 1890. | ||
| Reference(s): | |||
| Tonks, L H, Jones, R C B, Lloyd, W and Sherlock, R L, 1931. The geology of Manchester and the south-east Lancashire Coalfield. Memoir of the Geological Survey of England and Wales. | |||
| Roeder, C, 1890, Notes on the Upper Coal Measures at Slade Lane, Burnage. Transactions of the Manchester Geological Society, Vol.21, 114-136. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E085 | |||