| Computer Code: |
LBM |
Preferred Map Code: |
LBM |
| Status Code: |
Full |
| Age range: |
Rawtheyan Stage (OW)
— Rawtheyan Stage (OW) |
| Lithological Description: |
Pale grey, poorly bedded nodular siltstones and mudstones with a locally rich shelly fauna. |
| Definition of Lower Boundary: |
Conformably overlies the Quarrel Hill Formation (QHF). |
| Definition of Upper Boundary: |
Conformably overlain by the South Threave Formation (STHV). |
| Thickness: |
140m |
| Geographical Limits: |
Craighead Inlier, Girvan. |
| Parent Unit: |
Drummuck Subgroup (DKG)
|
| Previous Name(s): |
Lady Burn Mudstone [Obsolete Name and Code: Use LBM]
(-355)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Craighead Inlier, SO14W. (Drummuck Burn). |
| Type Section |
Lady Burn, Craighead Inlier, Girvan. |
| Reference(s): |
| Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. |
| Lamont, A. 1935. The Drummuck Group, Girvan; A stratigraphical revision, with descriptions of new fossils from the lower part of the group. Transactions of the Geological Society of Glasgow, Vol.19, 288-334. |
| Harper, D A T, 1982. The stratigraphy of the Drummock Group (Ashgill), Girvan. Geological Journal, Vol.17, p.251-277.l. 17 251-277 |
| Freshney, E C. 1959. An extension of the Silurian succession in the Craighead Inlier, Girvan. Transactions of the Geological Society of Glasghow, Vol. 24, 27-31. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S014
|
