The BGS Lexicon of Named Rock Units — Result Details

Traboyack Formation

Computer Code: TRA Preferred Map Code: TRA
Status Code: Full
Age range: Abereiddian Stage (O2) — Caradoc Series (O4)
Lithological Description: Red-purple sandstones, mudstones and conglomerates with high magnetic susceptibility.
Definition of Lower Boundary: Faulted contacts.
Definition of Upper Boundary: Faulted contacts.
Thickness: Up to about 1200 m thick.
Geographical Limits: Not defined.
Parent Unit: Tappins Group (TAP)
Previous Name(s): Traboyack Division (-580)
Alternative Name(s): none recorded or not applicable
Type Area  Traboyack, Sheet S008W. 
Williams, A, 1962. The Barr and Lower Ardmillan Series (Caradoc) of the Girvan district, southwest Ayrshire, with descriptions of the Brachiopoda. Memoir of the Geological Society of London, No.3. 
Floyd, J D, 1996. Lithostratigraphy of the Ordovician rocks in the Southern Uplands: Crawford Group, Moffat Shale Group, Leadhills Supergroup. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol.86, 153-165. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S008 S007