| Computer Code: |
GMD |
Preferred Map Code: |
GMD |
| Status Code: |
Full |
| Age range: |
Ashgill Series (OA)
— Ashgill Series (OA) |
| Lithological Description: |
At least four discrete mudflows, with olistoliths of green mudstones, rottenstone and shelly debris, separated by bedded mudstone and thinly bedded sandstone. |
| Definition of Lower Boundary: |
Base of lowest mudflow unit with olistoliths. |
| Definition of Upper Boundary: |
Succeeded by normal bedded mudstones of the Quarrel Hill Formation. |
| Thickness: |
c.20m |
| Geographical Limits: |
Girvan area, southwest Scotland. |
| Parent Unit: |
Quarrel Hill Formation (QHF)
|
| Previous Name(s): |
Lower Mudstones
(-936)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Glenmard Quarry, Craighead Inlier, Girvan. Harper, 1982. |
| Reference(s): |
| Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. |
| Harper, D A T, 1982. The stratigraphy of the Drummock Group (Ashgill), Girvan. Geological Journal, Vol.17, p.251-277.l. 17 251-277 |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
