| Computer Code: |
LBIE |
Preferred Map Code: |
LKBM |
| Status Code: |
Full |
| Age range: |
Cisuralian Epoch (PLC)
— Cisuralian Epoch (PLC) |
| Lithological Description: |
Red-brown breccio-conglomerate interbedded with thin- to medium-bedded red sandstone. Lithic clasts have a distinctive local derivation and include reddened limestone, wacke sandstone, basic volcanic rocks, siltstone, mudstone and rounded quartz pebbles. |
| Definition of Lower Boundary: |
Overlies Silurian strata with a marked angular unconformity north and west of the town of Lockerbie. |
| Definition of Upper Boundary: |
Conformable lithostratigraphical boundary with the overlying undivided strata of the Hartfield Formation. |
| Thickness: |
Proven by site investigations to be more than 11m thick. |
| Geographical Limits: |
In the vicinity of Lockerbie, Lochmaben Basin, Dumfriesshire, southwestern Scotland [Southern Uplands]. |
| Parent Unit: |
Hartfield Formation (HTFD)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Exposures in road cutting on the eastern side of the A74 north of Lockerbie. Brookfield, 1978. |
| Reference(s): |
| Brookfield, M E. 1977. Field guide to the Permian rocks of Dumfries and Lochmaben basins. Transactions of the Dumfriesshire and Galloway Natural History and Antiquarian Society. Third Series, Volume L11, 1-16. |
| Harkness, R. 1856. On the sandstones and breccias of the south of Scotland of an age subsequent to the Carboniferous period. Quareterly Journal of the Geological Society, Vol. 12, p.254-267. |
| Brookfield, M E. 1978. Revision of the Stratigraphy of Permian and Supposed Permian Rocks of Southern Scotland. Geologische Rundschau, Vol. 67, 110-143. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S010
|
