| Computer Code: |
CGH |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Asbian Substage (CR)
— Asbian Substage (CR) |
| Lithological Description: |
An off-white, typically fine-grained, siliceous sandstone, often thickly bedded with trough cross-bedding, and a little mica or carbonaceous material, famous as a building stone. |
| Definition of Lower Boundary: |
Status uncertain, but likely to be erosive on underlying argillaceous and arenaceous rocks of the Gullane formation. |
| Definition of Upper Boundary: |
Transitional by upward fining into non-marine siltstone and mudstone of the Gullane Formation, the Craigleith Marine Band lies a little further above. |
| Thickness: |
Up to 105m thick, in the City of Edinburgh. |
| Geographical Limits: |
Only known for certain in the Edinburgh area. |
| Parent Unit: |
Gullane Formation (GUL)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
Granton Sandstones
|
| Stratotypes: |
| Type Section |
Craigleth Quarry. Regionally Important Geological Site. |
| Reference(s): |
| Mitchell, G H. 1962. The geology of the neighbourhood of Edinburgh. (Explanation of Sheet 32) Third Edition. (Reprinted 1980). Memoir of the Geological Survey of Great Britain (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S032
|
