The BGS Lexicon of Named Rock Units — Result Details

Glenramskill Formation

Computer Code: GRK Preferred Map Code: GRK
Status Code: Full
Age range: Lochkovian Age (DO) — Lochkovian Age (DO)
Lithological Description: Conglomerates, breccias and sandstones all composed of dominantly Dalradian Supergroup rocks.
Definition of Lower Boundary: Unconformity on Dalradian Supergroup metasediments, with localised thin basal breccia.
Definition of Upper Boundary: The base of the New Orleans Conglomerate Formation.
Thickness: Comprises the Basal Breccia member at approximately 110 m thick which is overlain by the Quartzite Conglomerate member which is about 330m thick, to giving a total unit thickness of 440 m at type section.
Geographical Limits: The Kintyre peninsula, south of Peninver [NR 762 253], but excluding Sanda and neighbouring islands, on Sheet 12.
Parent Unit: Arbuthnott-Garvock Group (ATGK)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  Coast section on the south shore of Campbeltown Loch, from near Glenramskill House to the east end of the sands, joining Davaar Island to the mainland. 
Friend, P F and MacDonald, R, 1968. Volcanic sediments, stratigraphy and tectonic background of the Old Red Sandstone of Kintyre, west Scotland. Scottish Journal of Geology, Vol.4, p.265-282. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: