Computer Code: |
DHS |
Preferred Map Code: |
DHS |
Status Code: |
Full |
Age range: |
Late Devonian Epoch (DU)
— Late Devonian Epoch (DU) |
Lithological Description: |
Mainly sandstone with a few cornstone concretions. |
Definition of Lower Boundary: |
The lower boundary is inferred to disconformably overlie redbrown sandstone of the Late Devonian Kelly Burn Sandstone Formation, Stratheden Group (Browne et al., 2001). |
Definition of Upper Boundary: |
The upper boundary is conformably overlain by redbrown silty mudstone, with carbonate-cemented concretions, of the Foulport Mudstone Member of the Kinnesswood Formation. |
Thickness: |
About 30 m. BGS (2008) gave a generalised thickness of 36 m for the member. |
Geographical Limits: |
The Doughend Sandstone Member is known only on the island of Great Cumbrae, where it is exposed on the southwest of the island in the vicinity of Doughend Hole [NS 149 544]. The member is mapped at outcrop north-eastwards across the island. The outcrop is limited to the east by the Kaimes Bay Fault where the member is part of the hangingwall sequence. |
Parent Unit: |
Kinnesswood Formation (KNW)
|
Previous Name(s): |
Dug Head Sandstone Member [Obsolete Name and Code: Use DHS]
(-3361)
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
The type section comprises coastal exposures on the southwest side of Great Cumbrae Island, North Ayrshire [NS 149 549 to 149 544]. There the boundaries with over and underlying strata are faulted, though they have been mapped as stratiform elsewhere across the island (see Monro, 1999). |
Reference(s): |
Dean, M T, Browne, M A E, Waters, C N and Powell, J H. 2011. A lithostratigraphical framework for the Carboniferous successions of northern Great Britain (onshore). British Geological Survey Research Report, RR/10/007. 165pp. |
Monro, S K. 1999. Geology of the Irvine District. Memoir of the British Geological Survey, Sheet 22W and part of 21E (Scotland). |
Browne, M A E, McKirdy, A, and McAdam, A D. 2001. Fife and Tayside: a landscape fashioned by geology. (Perth: Scottish Natural Heritage.) |
British Geological Survey. 2002a. Hawk's Nib and Little Cumbrae - west. Scotland Sheet NS15SW. Solid and Drift. 1:10 000. (Edinburgh: British Geological Survey.) |
British Geological Survey. 2002b. Hunterston, Millport and Little Cumbrae - east. Scotland Sheet NS15SE. Solid and Drift. 1:10 000. (Edinburgh: British Geological Survey.) |
British Geological Survey. 2002c. Great Cumbrae - east. Scotland Sheet NS15NE. Solid and Drift. 1:10 000. (Edinburgh: British Geological Survey.) |
British Geological Survey. 2005. Irvine. Scotland Sheet 22W, part 21E. Bedrock. 1:50 000. (Keyworth, Nottingham: British Geological Survey.) |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |