| 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
|
| Stratotypes: |
| Type Area |
Abundant, generally north-east-trending veins on Beinn Udlaidh and surrounding area. |
| Reference(s): |
| 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 |
