| Computer Code: |
WASA |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Asbian Substage (CR)
— Asbian Substage (CR) |
| Lithological Description: |
A typically fine-grained, off-white, often thickly bedded with trough cross bedding, siliceous sandstone containing little mica or carbonaceous material, used locally as a building stone. |
| Definition of Lower Boundary: |
Status uncertain but likely to be erosive on underlying argillaceousand arenaceous rocks of the Gullane Formation. |
| Definition of Upper Boundary: |
Transitional by upward fining into mainly non-marine siltstone and mudstone of the Gullane Formation |
| Thickness: |
Between 10 m and 20 m thick, in the Granton and Wardie area of the City of Edinburgh. |
| Geographical Limits: |
Only known for certain in Edinburgh area |
| Parent Unit: |
Gullane Formation (GUL)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
A partially filled quarry at Granton. |
| Reference(s): |
| Wyatt |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
