The BGS Lexicon of Named Rock Units — Result Details

Kettleholm Breccia Formation

Computer Code: KTBR Preferred Map Code: KTBR
Status Code: Full
Age range: Permian Period (P) — Permian Period (P)
Lithological Description: A coarse- to medium- grained breccia, composed of subrounded, poorly sorted, red micaceous wacke and shale clasts.
Definition of Lower Boundary: Unconformable on Early Palaeozoic wacke sandstone of the Hawick and Riccarton groups.
Definition of Upper Boundary: Not seen.
Thickness: 20 m thick.
Geographical Limits: Localised distribution in Annandale, south-west Scotland, on Sheet S10W.
Parent Unit: Appleby Group (APY)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  River section in the Water of Milk at Kettleholm, 5 km south of Lockerbie, Dumfries and Galloway. Brookfield, 1978. 
Reference(s):
Brookfield, M E, 1978. Revision of the Stratigraphy of Permian and Supposed Permian Rocks of Southern Scotland. Geologische Rundschau, Vol.67, p.110-143. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S010