| Computer Code: |
MAL |
Preferred Map Code: |
MAL |
| Status Code: |
Pending Upgrade |
| Age range: |
Brigantian Substage (CX)
— Brigantian Substage (CX) |
| Lithological Description: |
Grey shale (marine fossils), limestone, sandstone. |
| Definition of Lower Boundary: |
Rapid change from massive red and white sandstones of Ballyvoy Sandstone Formation to grey shale of the member. |
| Definition of Upper Boundary: |
Shales succeeded by white, massive calcareous and micaceous sandstones. |
| Thickness: |
12 - 20m |
| Geographical Limits: |
Data not yet available. |
| Parent Unit: |
Ballyvoy Sandstone Formation (BVYS)
|
| Previous Name(s): |
Main Limestone Group [Obsolete Name and Code: Use MAL, PEMB]
(-4177)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Northeast coast of County Antrim. Coastal cliff sections east of Ballycastle. |
| Reference(s): |
| Wilson, H E and Robbie, J A. 1966. Geology of the Country around Ballycastle. Memoir of the Geological Survey. [Belfast: HMSO.] |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
