Computer Code: |
SRE |
Preferred Map Code: |
SRE |
Status Code: |
Full |
Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
Lithological Description: |
A massive, eutaxitic, lithic-rich, andesitic lapilli-tuff. |
Definition of Lower Boundary: |
Taken at the base of eutaxitic lapilli-tuff resting on volcaniclastic sandstone or bedded tuff of the Glaramara Tuff. |
Definition of Upper Boundary: |
Taken at the abrupt change from massive lapilli-tuff to volcaniclastic sandstone. |
Thickness: |
Up to 40 m thick. |
Geographical Limits: |
Kirkstone Pass to Troutbeck and south of Hayeswater, eastern Lake District, Cumbria. |
Parent Unit: |
Seathwaite Fell Sandstone Formation (SET)
|
Previous Name(s): |
St Raven's Edge Member
(-540)
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
St Raven's Edge, eastern side of the Kirkstone Pass, Cumbria. |
Reference(s): |
Woodhall, D G. 2000. The geology of the Haweswater and Martindale areas of the north-eastern Lake District. British Geological Survey Technical Report WA/00/55. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E030
E039
|