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
|