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
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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
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