| Computer Code: |
OAK |
Preferred Map Code: |
OAK |
| Status Code: |
Full |
| Age range: |
Gorstian Age (SG)
— Gorstian Age (SG) |
| Lithological Description: |
Mudstones, bedding-fissile with much graptolitic hemipelagite and thin siltstone laminae. |
| Definition of Lower Boundary: |
Passage from underlying Aston Mudstones - trench: (SO 3494 8817) to (SO 3481 8810). |
| Definition of Upper Boundary: |
Overlain by Bailey Hill Formation. |
| Thickness: |
0-180m |
| Geographical Limits: |
Eastern environs of Bishops Castle. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
Lower Ludlow Graptolitic Shales [Obsolete Name and Code: Use GFS, OAK]
(-4060)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Old quarry, 250m east of Oakley House, Bishops Castle, Shropshire. |
| Reference Section |
Track section c.100m south of Oakley House. |
| Reference(s): |
| none recorded or not applicable |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E165
|
