| Computer Code: |
AHB |
Preferred Map Code: |
AHB |
| Status Code: |
Index Level |
| Age range: |
Triassic Period (T)
— Triassic Period (T) |
| Lithological Description: |
[Obsolete: use AHM] Red, green and brown or yellow mudstones, siltstones and sandstones, calcareous in places. |
| Definition of Lower Boundary: |
Base at base of Lag a' Beith Marls and Cornstones. |
| Definition of Upper Boundary: |
Top at top of Levencorroch Marls and Cornstones. |
| Thickness: |
About 300 m thick. |
| Geographical Limits: |
Arran. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Auchenhew, Arran, Strathclyde, Scotland. Pollard, 1978. |
| Reference(s): |
| Craig, G Y. 1965. Geology of Scotland, 1st Edition. (Geological Society of London.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S338
S013
|
