The BGS Lexicon of Named Rock Units — Result Details

Barony Glen Formation

Computer Code: BAGL Preferred Map Code: BAGL
Status Code: Full
Age range: Courceyan Substage (CF) — Courceyan Substage (CF)
Lithological Description: Interbedded sandstone, siltstone, mudstone, calcrete, palaeosols, purplish brown, purplish red, grey, fawn, brown, green.
Definition of Lower Boundary: Concealed, but succeeds the Spincha Burn Conglomerate Formation from which it is distinguished by the absence of conglomerates and coarse-grained sandstones and the presence of palaeosols and calcrete horizons.
Definition of Upper Boundary: On 1:50 000 Sheet 18 the Barony Glen Formation is overlain unconformably by a succession of rocks including the Triassic Sherwood Sandstone and Mercia Mudstone groups, the Late Cretaceous Hibernian Greensand and Ulster White Limestone formations and the Palaeogene Lower Basalt Formation of the Antrim Lava Group.
Thickness: 400m
Geographical Limits: East side of the Dalradian Supergroup outcrop in the Sperrin Mountains and fringing the south side of Loch Foyle. Located west of the western edge of the basalt lavas of the Antrim Plateau.
Parent Unit: Roe Valley Group (ROEV)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  Barony Glen stream section east of bridge 5km northnorthwest of Moneyneany, Co Londenderry. 
Mitchell, W I. 1997. Geological description of 1:10,000 Sheet 77 [NW Quadrant] Part of 1:50 000 Geological Sheet 18 [Dungiven]. Geological Survey of Northern Ireland Technical Report GSNI/97/2. 
Mitchell, W I. [ed.]. 2004. The Geology of Northern Ireland - Our Natural Foundation. [Second Edition]. [Belfast: Geological Survey of Northern Ireland.] 
1:50K maps on which the lithostratigraphical unit is found, and map code used: