| Computer Code: |
FRE |
Preferred Map Code: |
FRE |
| Status Code: |
Full |
| Age range: |
Early Triassic Epoch (TE)
— Early Triassic Epoch (TE) |
| Lithological Description: |
Conglomerates with subordinate pebbly sandstones and sporadic mudstone bands. |
| Definition of Lower Boundary: |
Where conglomerates become the dominant lithology over sandstone. |
| Definition of Upper Boundary: |
Where conglomerate ceases to predominate over sandstone. |
| Thickness: |
To 56m |
| Geographical Limits: |
Cheadle area, Staffordshire. |
| Parent Unit: |
Chester Formation (CHES)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Quarries around Freehay: Mobberley. |
| Type Area |
Quarries around Freehay: Muddale. |
| Type Area |
Quarries around Freehay: Freehay. |
| Reference(s): |
| Barrow, G. 1903. The Geology of Cheadle Coalfield. Memoir of the Geological Survey of Great Britain. |
| Charsley, T J, 1982. A standard nomenclature for the Trassic formations of the Ashbourne district. Report of the Institute of Geological Sciences, No. 81/14. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E124
|
