| Computer Code: |
HAWL |
Preferred Map Code: |
HAWL |
| Status Code: |
Index Level |
| Age range: |
Brigantian Substage (CX)
— Brigantian Substage (CX) |
| Lithological Description: |
[Obsolete: use HUR] Upper part is a creamy weathering nodular limestone in kaolinitic matrix, grey or brownish-grey muddy fine-grained limestone below. |
| Definition of Lower Boundary: |
Base of limestone or base of calcareous shales where present, overlying non-calcareous shales with a thin coal seam. |
| Definition of Upper Boundary: |
Upper surface of nodular limestone overlain by mudstone. |
| Thickness: |
12m maximum, 3 - 5m commonly |
| Geographical Limits: |
Muirkirk, Gass Water and Glenmuir areas of Ayrshire (Strathclyde). |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
Muirkirk Main Limestone [Obsolete Name and Code: Use HAWL]
(-2232)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Ashaw burn, 370m upstream from old railway bridge, and disused quarry 310m southsouthwest of old railway bridge. |
| Reference(s): |
| none recorded or not applicable |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S015
S023
S014
|
