| Computer Code: |
NWO |
Preferred Map Code: |
NWO |
| Status Code: |
Full |
| Age range: |
Lochkovian Age (DO)
— Lochkovian Age (DO) |
| Lithological Description: |
Conglomerates and breccias composed of mainly lava boulders, with beds of red sandstone and siltstone, and localised tuff. |
| Definition of Lower Boundary: |
The top of the Glenramskill Formation where volcanic conglomerate overlies sandstones and mainly quartzitic conglomerate. |
| Definition of Upper Boundary: |
The base of the Bastard Sandstone Formation, where quartz-rich sandstone overlies predominantly volcanic conglomerate. |
| Thickness: |
About 890 m thick. |
| Geographical Limits: |
South of Campbeltown on the Kintyre Peninsula on Sheet 12, excluding Sanda and neighbouring islands. |
| Parent Unit: |
Arbuthnott-Garvock Group (ATGK)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
Creag Mhor Conglomerates [Obsolete: use CMC]
|
| Stratotypes: |
| Type Section |
Coast section on east coast of South Kintyre, from near Davaar House to approx 500m south of Achinhoan Head. |
| 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
|
