| Computer Code: |
SPCS |
Preferred Map Code: |
SpCS |
| Status Code: |
Full |
| Age range: |
Arnsbergian Substage (CG)
— Arnsbergian Substage (CG) |
| Lithological Description: |
Sandstone, grey, mostly weathered orange-brown, fine- to medium-grained siliceous with ganister levels particularly near top. Delta top sandstone. 0.2m coal at reference section, c 12m from top of unit. |
| Definition of Lower Boundary: |
Not exposed but as delta top sandstone overlies delta slope deposits of the Roeburndale Member, likely to be sharp and erosional on siltstones with thin sandstones. |
| Definition of Upper Boundary: |
Sharp with c 0.5m grey micaceous sandy siltstone overlain by claystones of the Eumorpoceras yatesae Marine Band. |
| Thickness: |
12m+ in Sapling Clough (basal part not seen). c.12m in tributary to Foxdale Beck (basal and top parts not seen). |
| Geographical Limits: |
Known currently only from the north and east sides of Ward's Stone Hill, Forest of Bowland, Lancashire. |
| Parent Unit: |
Roeburndale Member (RBL)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Sapling Clough at waterfall; top contact exposed above waterfall. Subordinate section in right bank 140m downstream. |
| Reference Section |
Left bank tributary to Foxdale Beck at incised gulley. |
| Reference(s): |
| Brandon, A, Aitkenhead, N, Crofts, R G, Ellison, R A, Evans, D J, and Riley, N J. 1998. Geology of the country around Lancaster. Memoir of the British Geological Survey, Sheet 59 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E059
|
