| Computer Code: |
MPG |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Frasnian Age (DR)
— Famennian Age (DA) |
| Lithological Description: |
Nodular limestones and nodular calcareous shales, purple and green slates with nodules, siliceous green slates with nodules. |
| Definition of Lower Boundary: |
Drawn at the base of the nodular limestones and Calcareous Shales Formation where it rests conformably upon the Kiln Wood Beds. |
| Definition of Upper Boundary: |
Drawn at the conformable upward passage of the Siliceous Green Slates with nodules formation to the Winston Chert Formation of Upper Famennian age. |
| Thickness: |
Not known. |
| Geographical Limits: |
Chudleigh, south Devon. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Chudleigh, Devon. |
| 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). |
| Tucker, M E and Van Straaten P, 1970. Conodonts and facies on the Chudleigh Schwelle. Proceedings of the Ussher Society, Vol.2, p.160-170. |
| Rhodes, F H T and others, 1973. Micromorphic studies of platform conodonts. Geological Society of America, Special Paper, No.141, p.117-131. |
| House, M R and Butcher, N E, 1973. Excavations in the Devonian and Carboniferous Rocks near Chudleigh, south Devon. Transactions of the Royal Geological Society of Cornwall, Vol.20, p.199-220. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
