http://earthwise-staging.bgs.ac.uk/index.php?action=history&feed=atom&title=Aberlady_FormationAberlady Formation - Revision history2026-04-14T14:46:05ZRevision history for this page on the wikiMediaWiki 1.42.3http://earthwise-staging.bgs.ac.uk/index.php?title=Aberlady_Formation&diff=52493&oldid=prevDbk: 1 revision imported2021-07-26T14:53:49Z<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=Aberlady_Formation&diff=52492&oldid=prevGeosource>Volunteer 01 at 10:58, 15 December 20152015-12-15T10:58:34Z<p></p>
<p><b>New page</b></p><div>==Aberlady Formation [http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=ABY (ABY)], Carboniferous, Midland Valley of Scotland==<br />
<br />
The Aberlady Formation is part of the [[Strathclyde Group]] in the Lothians. <br />
<br />
=== Lithology ===<br />
The Aberlady Formation consists of a cyclical sequence predominantly of pale coloured sandstone interbedded with grey siltstone and grey mudstone. Subordinate but common lithologies are coal, seatrock, ostracod-rich limestone/dolomite and sideritic ironstone, and marine bands or bioclastic limestones with relatively rich and diverse faunas. The last-named feature distinguishes the unit from the [[Gullane Formation]]. The depositional environment was fluviodeltaic, into lakes and marine embayments. <br />
<br />
===Type section===<br />
The type section of the Aberlady Formation (Figure 2, column 11) is from 21.64 to 155.44 m in the Spilmersford Borehole (NT 4570 6902) (BGS Reg. No. NT 46 NE/73). Other characteristic sections occur from 28.88 to 168.10 m in the Skateraw Borehole (NT 7373 7546) (BGS Reg. No. NT 77 NW/47) and (partially) on the coast at Cove (NT 78 71) in the Oldhamstocks Basin (Figure 2, column 12) and at Kilspindie (NT 46 80) by Aberlady Bay.<br />
<br />
=== Upper and lower boundaries ===<br />
The base lies in a transitional sequence and is taken at the base of the lowest of the Macgregor Marine Bands. The formation is laterally equivalent to and has a laterally transitional boundary with the West Lothian Oil Shale Formation to the west, being distinguished from it chiefly by the rarity of oil shales. The top is drawn at the base of the Hurlet Limestone. <br />
<br />
=== Thickness ===<br />
The maximum thickness of the formation is about 140 m (Chisholm et al., 1989, section 4.4)<ref name="chisholm89">Chisholm, J I, McAdam, A D, and Brand, P J. 1989. Litho-stratigraphical classification of Upper Devonian and Lower Carboniferous rocks in the Lothians. ''British Geological Survey Technical Report'', WA/89/26.</ref>.<br />
<br />
== References ==<br />
<references/><br />
[[Category:Carboniferous lithostratigraphical nomenclature]]</div>Geosource>Volunteer 01