| 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
|
| Stratotypes: |
| 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. |
| Reference(s): |
| 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, 265-282. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S012
|
