http://earthwise.bgs.ac.uk/index.php?action=history&feed=atom&title=Arbigland_Limestone_MemberArbigland Limestone Member - Revision history2026-05-15T02:10:54ZRevision history for this page on the wikiMediaWiki 1.42.3http://earthwise.bgs.ac.uk/index.php?title=Arbigland_Limestone_Member&diff=52883&oldid=prevDbk: 1 revision imported2021-07-26T14:54:01Z<p>1 revision imported</p>
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<p><b>New page</b></p><div>==Arbigland Limestone Member [http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=ARLM (ARLM)], Carboniferous, Northern England Province ==<br />
Arbigland Limestone Member is part of the [[Tyne Limestone Formation]]<br />
=== Name ===<br />
Previously known as Arbigland Group (Craig, 1956<ref name="Craig56">Craig, G Y, and Nairn, A E M.1956.The Lower Carboniferous outliers of the Colvend and Rerrick shores, Kirkcudbrightshire.''Geological Magazine'', Vol. 93, 249–256</ref>) and Arbigland Beds (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 Unpublished PhD thesis, University of Wales, Aberystwyth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>). The status was changed from the Arbigland Limestone Formation (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>) to a member of the Tyne Limestone Formation.<br />
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=== Lithology ===<br />
The member comprises interbedded marine limestone, mudstone and subsidiary siltstone, with thick cross-bedded, bioturbated, medium-grained sandstone.<br />
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=== Stratotype ===<br />
The type section is the Arbigland coast, Kirkcudbrightshire, from Arbigland (NX 9940 5720) to Hogus Point (NX 9970 5880), where mudstones, siltstones, sandstones, and limestones constitute a section probably more than 300.m thick (Craig, 1956<ref name="Craig56"></ref>; Deegan, 1970<ref name="Deegan70"></ref>; but see Lintern and Floyd, 2000, p. 82<ref name="LandF"></ref>).<br />
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=== Lower and upper boundaries ===<br />
The base of the Arbigland Limestone Member is probably conformable on the Thirlstane Sandstone (Powillimount Sandstone Member, Fell Sandstone Formation) (Figure.10; Column 2). It is stratigraphically the highest unit in the Kirkbean Outlier, and its top is not exposed.<br />
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=== Thickness ===<br />
More than 300 m.<br />
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=== Distribution and regional correlation ===<br />
The Kirkbean Outlier of the Kirkcudbright.—.Dalbeattie district.<br />
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=== Age and biostratigraphical characterisation ===<br />
Asbian. The limestones and mudstones have an abundant and diverse fauna of corals (including ''Lithostrotion clavicatum, Siphonodendron scotica'' and ''Siphonophyllia benburbensis''), brachiopods (including ''Actinopteria persulcata, Linoprotonia'' cf. ''ashfellensis'', ''Productus'' cf. ''garwoodi, Punctospirifer scabricosta redesdalensis'' and ''Stenoscisma'' cf. ''isorhyncha''), bivalves (including ''Prothyris'' cf. ''oblonga'' and ''Pteronites'' cf. ''angustatus'') and other molluscs, crinoids and bryozoa. ''Siphonophyllia benburbensis'' is unknown in strata earlier than the Asbian.<br />
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== References ==<br />
<references/><br />
[[Category:Carboniferous lithostratigraphical nomenclature]]</div>Geosource>Volunteer 01