| Computer Code: |
PIG |
Preferred Map Code: |
PiG |
| Status Code: |
Full |
| Age range: |
Rhuddanian Age (SR)
— Aeronian Age (SA) |
| Lithological Description: |
Interbedded grey turbidite mudstones and laminated hemipelagites. Scattered thin turbidite sandstones. |
| Definition of Lower Boundary: |
Gradational but taken at base of first thick mudstone unit above the Allt-y-Clych Conglomerate. |
| Definition of Upper Boundary: |
Not seen. |
| Thickness: |
Up to 400m. |
| Geographical Limits: |
Central Wales, east of Tywi Anticline. |
| Parent Unit: |
Not Entered (?)
|
| Previous Name(s): |
Pistyll Gwyn Mudstones Member [Obsolete Name and Code: Use PIG]
(-2372)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Cutting behind Pistyll Gwyn Farmyard, Llanyre, Powys. |
| Reference(s): |
| none recorded or not applicable |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E179
|
