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
|