Computer Code: |
-1516 |
Preferred Map Code: |
notEntered |
Status Code: |
Index Level |
Age range: |
Late Ordovician Epoch (OLA)
— Late Ordovician Epoch (OLA) |
Lithological Description: |
[Obsolete: use DRSH] |
Definition of Lower Boundary: |
none recorded or not applicable
|
Definition of Upper Boundary: |
none recorded or not applicable
|
Thickness: |
none recorded or not applicable
|
Geographical Limits: |
none recorded or not applicable
|
Parent Unit: |
none recorded or not applicable
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
none recorded or not applicable |
Reference(s): |
Nicholson, H A, and Marr, J E. 1887. On the occurrence of a new fossiliferous horizon in the Ordovician Series of the Lake District. Geological Magazine, Decade 3, Vol. 4, 339–344. |
Elles, G L, and Wood, E M R. 1895. Supplementary notes on the Drygill Shales. Geological Magazine, Vol. 2, 246–249. |
Dean, W T, 1963. The Stile End Beds and Drygill Shales in the east and north of the English Lake District. Bulletin of the British Museum of Natural History, Vol.9, No.3, pp47-65. |
Eastwood, T, Hollingworth, S E, Rose, W C C, and Trotter, F M. 1968. Geology of the country around Cockermouth and Caldbeck. Memoir of the Geological Survey of Great Britain, England and Wales, Sheet 23. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |