The BGS Lexicon of Named Rock Units — Result Details

Hawick Group

Computer Code: HWK Preferred Map Code: HWK
Status Code: Pending Upgrade
Age range: Llandovery Epoch (SL) — Wenlock Epoch (SW)
Lithological Description: Thin- to medium-bedded greywacke and interbedded silty mudstone with thin red mudstone beds in Carghidown Formation and laminated fossiliferous carbonaceous siltstone beds in Ross Formation. Greywackes calcareous except in Cairnharrow Formation.
Definition of Lower Boundary: Faulted - base gradational through Cairnharrow Formation to Gala Group.
Definition of Upper Boundary: Faulted - top gradational through Ross Formation to Riccarton Group.
Thickness: Unknown, possibly up to several km thick.
Geographical Limits: Not defined.
Parent Unit: Not Applicable (-)
Previous Name(s): Hawick Rocks (-3383)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Barnes, R P. 1989. Geology of the Whithorn district. Memoirs of the British Geological Survey, 1:50,000 Sheet 2 (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S002 S016 S017 S017 S034 E001 E002