The BGS Lexicon of Named Rock Units — Result Details

Red Bay Formation

Computer Code: RBAY Preferred Map Code: RBAY
Status Code: Full
Age range: Late Mississippian Epoch (CMIL) — Cisuralian Epoch (PLC)
Lithological Description: Conglomerate, pinkish grey, clast supported with small to very large rounded boulders of quartzite, schistose psammite and granite and thin discontinuous sandstone beds; sandstone, reddish orange, fine-to coarse-grained with thin beds of breccia.
Definition of Lower Boundary: Concealed, but probable faulted contact with Cushendall Porphry.
Definition of Upper Boundary: Basal unconformity of the succeeding Red Arch Formation of the Sherwood Sandstone Group
Thickness: 0-260m (0-853ft)
Geographical Limits: Coastal sections in northeast County Antrim between the Lifeboat Slipway, south of Cushendall to the unconformity exposed on the shore at the Red Arch, north of Waterfoot.
Parent Unit: Not Entered (?)
Previous Name(s): Red Arch Formation (REDA)
Alternative Name(s): none recorded or not applicable
Reference Section  Shore section extending from exposures immediately south of the Lifeboat Slipway,south of Cushendall to the unconformity exposed in the shore section opposite the cliff caves at the Red Arch,on the north side of Red Bay. irish Grid 
Simon, J B. 1984. Sedimentation of a small complex alluvial fan of possible Upper Old Red Sandstone age, Northeast County Antrim. Irish Journal of Earth Sciences 6, 109-119. 
Turner, P, Shelton, R, Ruffell, A and Pugh, J. 2000. Palaeomagnetic constraints on the age of the Red Arch Formation and associated sandstone dykes (Northern Ireland).Journal of the Geological Society,London,157,317-325. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: