| Computer Code: |
GNL |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Frasnian Age (DR)
— Tournaisian Age (CT) |
| Lithological Description: |
Purple and green slates with silty laminations in the central part of the outcrop. Grey slates with local spilite lavas (some pillow structures), bluish-grey calcareous siltstones between Bremridge and Farlacombe ]SX 792 711] and buff siltstone to the south-east of Bickington are seen to the north-west and south-east. Rare ferruginous or siliceous nodules occur throughout the formation. |
| Definition of Lower Boundary: |
Undefined. |
| Definition of Upper Boundary: |
Undefined. |
| Thickness: |
Not known. |
| Geographical Limits: |
West and south west of Newton Abbot, south Devon. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Gurrington Quarry. Selwood et al., 1984. |
| Reference(s): |
| Selwood, E B, Edwards, R A, Simpson, S, Chesher, J A, Hamblin, R J O, Henson, M R, Riddolls, B W and Waters, R A. 1984. Geology of the countryside around Newton Abbot. Memoir of the British Geological Survey, Sheet 339 (England and Wales). |
| Ussher, W A E. 1913. Geology of the country around Newton Abbot. Memoir of the British Geological Survey, Sheet 339. (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E339
|
