| Computer Code: |
CWK |
Preferred Map Code: |
Cwk |
| Status Code: |
Full |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
Stratified pebbly volcaniclastic sandstone with a few intercalations of bedded coarse-grained volcaniclastic sandstone. |
| Definition of Lower Boundary: |
Unconformable contact with ignimbrite of the Helvellyn Tuff Formation. |
| Definition of Upper Boundary: |
Indistinct contact with bedded volcaniclastic sandstone (undivided) of the Deepdale Sandstone Formation. |
| Thickness: |
90m (maximum) |
| Geographical Limits: |
Deepdale and Rydal Head, northeast Lake District (between Grasmere and Patterdale). |
| Parent Unit: |
Deepdale Sandstone Formation (DPD)
|
| Previous Name(s): |
Cawk Cove Member [Obsolete Name and Code: Use CWK]
(-4578)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
(Of the Deepdale Formation). Mart Crag, 3.4km south-west of Deepdale Bridge. |
| Reference(s): |
| Woodhall, D G, 1998. The geology of the Wythburn, Thirlmere and Fairfield areas of the north-east Lake District. British Geological Survey Technical Report WA/98/07. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E029
|
