The BGS Lexicon of Named Rock Units — Result Details

Craigmalloch Formation

Computer Code: CRGM Preferred Map Code: CRGM
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Conglomerates, greywackes and flaggy siltstones.
Definition of Lower Boundary: Faulted.
Definition of Upper Boundary: Faulted.
Thickness: c. 500m
Geographical Limits: Not defined.
Parent Unit: Albany Group (ALBY)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Area  Water of Gregg, Barr, Sheet S008W. 
Ince, D, 1984. Sedimentation and tectonism in the Middle Ordovician of the Girvan district, north west Scotland. Transactions of the Royal Society of Edinburgh. Earth Sciences, Vol.75 (2), p.225-237. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: