The BGS Lexicon of Named Rock Units — Result Details

Upton Formation

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
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. 
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