| Computer Code: |
CSG |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Holkerian Substage (CQ)
— Asbian Substage (CR) |
| Lithological Description: |
[Obsolete: use FELL] Massive sandstones, shales, and a few thin coals, with thin limestones and calcareous sandstones.
Obsolete term Craighill Sandstone Group is replaced by Fell Sandstone Formation. |
| Definition of Lower Boundary: |
Drawn at the base of the Craighill Sandstone Group where sandstone rests conformably upon limestone of the Fell Sandstone Group. |
| Definition of Upper Boundary: |
Drawn at the conformable upward passage of sandstone of the Craighill Sandstone Group to sandstone with thicker limestone units of the Birdoswald Group. |
| Thickness: |
233 metres approx. |
| Geographical Limits: |
Brampton district. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Brampton district. |
| Reference(s): |
| Trotter, F M and Hollingworth, S E. 1932. The geology of the Brampton District. Memoir of the Geological Survey, Sheet 18. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
