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
Stratotypes:
Type Area  Water of Gregg, Barr, Sheet S008W. 
Reference(s):
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:
S008