| Computer Code: |
BNC |
Preferred Map Code: |
BNC |
| Status Code: |
Full |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
Boulder conglomerate. |
| Definition of Lower Boundary: |
Locally erosive contact with Stinchar Limestone Formation, basal beds are laterally equivalent to the Superstes Mudstone Formation. |
| Definition of Upper Boundary: |
Overlain by Balclatchie Formation. |
| Thickness: |
50-750m |
| Geographical Limits: |
North side of the Stinchar Valley, Girvan district. Lower part is lateral equivalent of Superstes Mudstone Formation. |
| Parent Unit: |
Barr Group (BARR)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Benan Hill, Kirkland Hill, Auchensoul Hill. |
| Reference(s): |
| Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. |
| Williams, A, 1962. The Barr and Lower Ardmillan Series (Caradoc) of the Girvan district, southwest Ayrshire, with descriptions of the Brachiopoda. Memoir of the Geological Society of London, No.3. |
| Ince, D, 1984. Sedimentation and tectonism in the Middle Ordovician of the Girvan district, north west Scotland. Transactions of the Royal Society of Edinburgh. Earth Sciences, Vol.75 (2), p.225-237. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S008
S007
|
