| Computer Code: |
OPS |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Bolsovian Substage (CC)
— Bolsovian Substage (CC) |
| Lithological Description: |
A dark reddish brown sandstone and subordinate mudstone. |
| Definition of Lower Boundary: |
The lower boundary is taken at the base of a sandstone-dominated unit directly overlying the Openshaw Coal. |
| Definition of Upper Boundary: |
The upper boundary is taken at the base of the mudstone-dominated succession of the Pennine Upper Coal Measures Formation above the sandstones of the Openshaw Sandstone. |
| Thickness: |
24 m thick. |
| Geographical Limits: |
The Bradford district of East Manchester [SJ864 988]. |
| Parent Unit: |
Pennine Upper Coal Measures Formation (PUCM)
|
| Previous Name(s): |
Aqueduct Rock [Obsolete Name and Code: Use OPS]
(-1105)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Former sewer section, Rochdale Road/Eggington Street, Manchester, which exposed a section through the whole unit, but is no longer accessible. Tonks et al., 1931. |
| Type Area |
The Bradford district of East Manchester (not presently exposed). Tonks et al., 1931. |
| 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. |
| Binney, E W. 1841. Observations on the Lancashire and Cheshire Coal Field, with a section. Transactions of the Manchester Geological Society, Vol 1, 67-79. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E085
|
