The BGS Lexicon of Named Rock Units — Result Details

Cairnharrow Formation

Computer Code: CNW Preferred Map Code: CNW
Status Code: Pending Upgrade
Age range: Llandovery Epoch (SL) — Llandovery Epoch (SL)
Lithological Description: Thin- to medium-bedded greywacke with variable proportion of interbedded silty mudstone including some thick (to 40m) units. Includes pockets of distinctive thick-bedded parallel laminated greywacke with abundant concretions.
Definition of Lower Boundary: Faulted.
Definition of Upper Boundary: Faulted.
Thickness: Not defined.
Geographical Limits: Not defined.
Parent Unit: Hawick Group (HWK)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Cairnharrow, west side, Sheet S04E. 
Reference(s):
none recorded or not applicable
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S004 S001 S003 S004