| Computer Code: |
UPTN |
Preferred Map Code: |
Uptn |
| Status Code: |
Full |
| Age range: |
Permian Period (P)
— Permian Period (P) |
| Lithological Description: |
Orange-brown to purplish brown gritty clay with scattered angular to subrounded culm sandstone fragments; locally clayey gravel. The clay matrix consists of angular fragments of weathered shale forming a "shale paste". |
| Definition of Lower Boundary: |
Probably rests on weathered Crackington Formation; outcrops mainly fault-bounded. |
| Definition of Upper Boundary: |
Not seen. |
| Thickness: |
At least 10m |
| Geographical Limits: |
Restricted to small area west of Clyst Hydon, Devon, and to a small outcrop around Chapelhaies Farm (SS 973 052), Bradninch, Devon. |
| Parent Unit: |
Exeter Group (EXE)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Around Upton Farm (ST 021 006), near Clyst Hydon, Devon. Name derived from Upton Farm, Clyst Hydon, Devon. |
| Reference Section |
No good type section; small track and stream sections, eg (ST 0239 0091) (ST 0244 0074) (ST 0187 0068) (ST 0207 0058). |
| Reference(s): |
| Edwards, R A. 1988. Geology of the Clyst Hydon District (Devon). British Geological Survey Technical Report WA/88/4. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
