The BGS Lexicon of Named Rock Units — Result Details

Gala Unit 2

Computer Code: GAL2 Preferred Map Code: GALA2
Status Code: Full
Age range: Rhuddanian Age (SR) — Rhuddanian Age (SR)
Lithological Description: Graded beds that may include wacke sandstone, siltstone and mudstone in variable proportion, interpreted as turbidites. Rare interbedded mudstones have yielded fauna of the acuminatus Biozone.
Definition of Lower Boundary: Southern faulted boundary: Sandhead Fault. Stratigraphical lower boundary with underlying Moffat Shale Group (of Ordovician to Silurian age).
Definition of Upper Boundary: Northern faulted boundary Luce Bay to New Galloway: Stair Haven Fault. East of New Galloway: Orlock Bridge Fault.
Thickness: c. 1000m of near vertical strata
Geographical Limits: Mapped from the Sandhead on the Rhins of Galloway (Sheet 1/3) to Peebleshire (Sheet 24E). Correlation with Central Belt turbidites of Llandovery age in the Ards Peninsula, Northern Ireland.
Parent Unit: Gala Group (GALA)
Previous Name(s): GALA GROUP
QUEENSBERRY GRITS
PYROXENOUS GREYWACKE GROUP
Alternative Name(s): MINDORK FORMATION
Stratotypes:
Reference Section  Mindork Fell, 3 km. SSW of Kirkcowan. 
Reference(s):
none recorded or not applicable
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S001 S003 S004 S004 S009 S009 S016 S024 S024 N29 S015