| Computer Code: |
RABK |
Preferred Map Code: |
RaBk |
| Status Code: |
Full |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
Massive and bedded fine- to coarse-grained tuff, some volcaniclastic sandstone at top. There is some uncertainty over whether the rocks are primary pyroclastic or reworked and resedimented. |
| Definition of Lower Boundary: |
Indistinct contact with vitric (welded) tuff of the Thirlmere Tuff Member. |
| Definition of Upper Boundary: |
Sharply overlain by lapilli-tuff of the Lincomb Tarns Tuff Formation (undivided). |
| Thickness: |
30 - 60m |
| Geographical Limits: |
North Lake District immediately east of Thirlmere. |
| Parent Unit: |
Lincomb Tarns Tuff Formation (LTA)
|
| Previous Name(s): |
Raise Beck Member [Obsolete Name and Code: Use RABK]
(-1132)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Exposures along Raise Beck, Wythburn. |
| Reference Section |
Exposures along Whelpside Gill, Wythburn. |
| 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
|
