| Computer Code: |
ABN |
Preferred Map Code: |
ABN |
| Status Code: |
Full |
| Age range: |
Early Devonian Epoch (DL)
— Early Devonian Epoch (DL) |
| Lithological Description: |
Purplish grey sandstones with subordinate beds of red-brown siltstone. |
| Definition of Lower Boundary: |
The top of the Auchencar Sandstone Formation. |
| Definition of Upper Boundary: |
The base of the Sannox Siltstone Formation in the Sannox area, and the unconformity with overlying Upper Devonian strata elsewhere on Arran. |
| Thickness: |
About 950 m to 670 m in the west of Arran. |
| Geographical Limits: |
Isle of Arran. |
| Parent Unit: |
Arbuthnott-Garvock Group (ATGK)
|
| Previous Name(s): |
Am Binnein Sandstones Formation
(-628)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Am Binnein, Goat Fell, Arran, Strathclyde, Scotland. Arran Special Sheets Nos. 13 and 21. |
| Reference(s): |
| Browne, M A E, Smith, R A, and Aitken, A M. 2002. Stratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. British Geological Survey Research Report RR/01/04. 67 pp. |
| Friend, P F, Harland, W B, and Hudson, J D. 1963. The Old Red Sandstone and the Highland Boundary in Arran, Scotland. Transactions of the Edinburgh Geological Society, Vol. 19, 363-425. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S338
|
