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<p></p> <p><b>New page</b></p><div>== West Bay Cornstone Member [http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=WBC (WBC)], Carboniferous, Midland Valley of Scotland ==<br /> <br /> West Bay Cornstone Member is part of the [[Kinnesswood Formation]].<br /> <br /> === Name ===<br /> The West Bay Cornstone Member is known from the south coast of the island of Great Cumbrae, adjacent to West Bay Road, Millport. See Monro (1999)&lt;ref&gt;Monro, S K.1999.Geology of the Irvine district.Memoir of the British Geological Survey, Sheet 22W, part 21E (Scotland).&lt;/ref&gt;; BGS (2002a&lt;ref&gt;British Geological Survey.2002a.Hawk’s Nib and Little Cumbrae.–.west. Scotland Sheet NS15SW. Solid and Drift. 1:10.000. (Edinburgh: British Geological Survey.)&lt;/ref&gt;; 2002b&lt;ref&gt;British Geological Survey.2002b.Hunterston, Millport and Little Cumbrae.–.east. Scotland Sheet NS15SE. Solid and Drift. 1:10.000. (Edinburgh: British Geological Survey.&lt;/ref&gt;; 2002c&lt;ref&gt;British Geological Survey.2002c.Great Cumbrae.–.east. Scotland Sheet NS15NE. Solid and Drift. 1:10.000. (Edinburgh: British Geological Survey.)&lt;/ref&gt;; 2005&lt;ref&gt;<br /> British Geological Survey.2005.Irvine. Scotland Sheet 22W, part 21E. Bedrock. 1:50.000. (Keyworth, Nottingham: British Geological Survey.)&lt;/ref&gt;).<br /> <br /> === Lithology ===<br /> Sandstone, yellow with red and green mottling, with carbonate-cemented (‘cornstone’) concretions.<br /> <br /> === Stratotype ===<br /> The type section is coastal exposures on the southern side of Great Cumbrae Island, Strathclyde region. The entire member, including the lower and upper boundaries, is exposed on the coast at the south-west end of the town of Millport (NS 157 543 to 156 542) (see Monro, 1999).<br /> <br /> === Lower and upper boundaries ===<br /> The lower boundary conformably overlies the red-brown silty mudstone, with carbonate-cemented concretions, of the [[Foulport Mudstone Member]], [[Kinnesswood Formation]]. <br /> <br /> The upper boundary is conformably overlain by a grey mudstone sequence with ferroan dolostone beds of the [[Ballagan Formation]] (Figure 6, Column 2).<br /> <br /> === Thickness ===<br /> Approximately 16 m<br /> <br /> === Distribution and regional correlation ===<br /> The West Bay Cornstone Member is known only on the island of Great Cumbrae, where it is exposed on the south coast of the island adjacent to West Bay Road, Millport. The member is mapped at outcrop to underlie the town of Millport. The outcrop is limited to the east by the Kaimes Bay Fault where the member is part of the hanging-wall sequence.<br /> <br /> === Age ===<br /> Tournaisian<br /> == References ==<br /> &lt;references/&gt;<br /> [[Category:Carboniferous lithostratigraphical nomenclature]]</div>

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