The BGS Lexicon of Named Rock Units — Result Details

Quartz Breccia (Vein)

Computer Code: VQBR Preferred Map Code: symb
Status Code: Pending Upgrade
Age range: Silurian Period (S) — Permian Period (P)
Lithological Description: Quartz veins forming anastomosing networks of individual veins of varying orientation. The veins enclose or encircle generally angular patches and fragments of country rock. The vein-breccia itself lies within a discrete and normally sub-vertical or steeply-dipping vein.
Definition of Lower Boundary: Not applicable.
Definition of Upper Boundary: Not applicable
Thickness: Normally a few metres to tens of metres thick
Geographical Limits: Abundant in the Beinn Udlaidh - Ben Lui - Beinn Odhar area around Tyndrum in the nirthwest part of the Stirling District and adjacent parts of the Argyll District.
Parent Unit: Not Applicable (-)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Area  Abundant, generally north-east-trending veins on Beinn Udlaidh and surrounding area. 
Treagus, J E, Pattrick, R A D and Cuertis, S F, 1999. Movement and mineralisation in the Tyndrum Fault Zone, Scotland, and its regional significance. Journal of the Geological Society, Vol.156, 591-604. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable