http://earthwise-staging.bgs.ac.uk/index.php?action=history&feed=atom&title=Powillimount_Sandstone_MemberPowillimount Sandstone Member - Revision history2026-04-15T21:15:38ZRevision history for this page on the wikiMediaWiki 1.42.3http://earthwise-staging.bgs.ac.uk/index.php?title=Powillimount_Sandstone_Member&diff=52805&oldid=prevDbk: 1 revision imported2021-07-26T14:53:58Z<p>1 revision imported</p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<tr class="diff-title" lang="en">
<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:53, 26 July 2021</td>
</tr><tr><td colspan="2" class="diff-notice" lang="en"><div class="mw-diff-empty">(No difference)</div>
</td></tr></table>Dbkhttp://earthwise-staging.bgs.ac.uk/index.php?title=Powillimount_Sandstone_Member&diff=52804&oldid=prevGeosource>Volunteer 01 at 12:28, 29 July 20152015-07-29T12:28:29Z<p></p>
<p><b>New page</b></p><div>==Powillimount Sandstone Member [http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=POSD (POSD)], Carboniferous, Midland Valley of Scotland ==<br />
Powillimount Sandstone Member is part of the [[Border Group]]<br />
=== Name ===<br />
Originally named the Powillimount Beds and Thirlstane Sandstone by Craig (1956), and the Powillimount Sandstone Formation by Lintern and Floyd (2000)<ref name="LandF">Lintern, B C, and Floyd, J D.2000.Geology of the Kirkcudbright–Dalbeattie district.''Memoir of the British Geological Survey'', Sheets 5W and 5E, part 6W (Scotland)</ref>.<br />
<br />
=== Lithology ===<br />
See Craig (1956)<ref name="Craig56">Craig, G Y.1956.The Lower Carboniferous outlier of Kirkbean, Kirkcudbrightshire.''Transactions of the Geological Society of Glasgow''. Vol. 22, 113–122</ref> and Deegan (1970)<ref name="Deegan70">Deegan, C E.1970.The petrology and sedimentology of the Lower Carboniferous rocks between White Port and Kirkbean, Kirkcudbrightshire. Unpublished PhD thesis, University of Wales, Aberystwyth</ref>. Interbedded bioturbated sandstone, sandy limestone (with some oncolite beds), and sparsely fossiliferous mudstone. There is subsidiary siltstone and a trace of coal.<br />
<br />
=== Stratotype ===<br />
The type section is the coast between Powillimount Bay (NX 9880 5610) and Thirl Stane (NX 9925 5690) with about 160 m of sandstone, limestone, and mudstone. The top 25 m of the member comprise the thick-bedded Thirlstane Sandstone Beds (Lintern and Floyd, 2000<ref name="LandF"></ref>).<br />
<br />
=== Lower and upper boundaries ===<br />
The base is gradational and taken where mainly interbedded medium- to coarse-grained sandstone and subsidiary conglomerate of the Gillfoot Sandstone Member gives way to mainly interbedded bioturbated sandstone, sandy limestone and mudstone of the Powillimount Sandstone Member (Figure 10, Column 2).<br />
<br />
The top of the member is taken at the top of the Thirlstane Sandstone, which lies conformably beneath the interbedded marine limestone, mudstone and subsidiary siltstone, with thick cross-bedded, bioturbated, medium-grained sandstone of the Arbigland Limestone Member, Tyne Limestone Formation.<br />
<br />
=== Thickness ===<br />
Some 135 m<br />
<br />
=== Distribution and regional correlation ===<br />
Powillimount shore, Southerness, Kirkcudbrightshire, south-western Scotland (Southern Uplands).<br />
<br />
=== Age ===<br />
Arundian to Holkerian.<br />
<br />
== References ==<br />
<references/><br />
[[Category:Carboniferous lithostratigraphical nomenclature]]</div>Geosource>Volunteer 01