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: |
Reference Section |
No good type section; small track and stream sections, eg (ST 0239 0091) (ST 0244 0074) (ST 0187 0068) (ST 0207 0058). |
Type Area |
Around Upton Farm (ST 021 006), near Clyst Hydon, Devon. Name derived from Upton Farm, Clyst Hydon, Devon. |
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 |