http://earthwise-staging.bgs.ac.uk/index.php?action=history&feed=atom&title=Carbeth_Lava_Member 2026-04-15T17:29:12Z Revision history for this page on the wiki MediaWiki 1.42.3 http://earthwise-staging.bgs.ac.uk/index.php?title=Carbeth_Lava_Member&diff=52513&oldid=prev 2021-07-26T14:53:49Z

<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>

Dbk http://earthwise-staging.bgs.ac.uk/index.php?title=Carbeth_Lava_Member&diff=52512&oldid=prev 2015-10-20T10:52:18Z

<p><span dir="auto"><span class="autocomment">Carbeth Lava Member (CBTL), Kilpatrick Hills, Carboniferous, Midland Valley of Scotland</span></span></p> <p><b>New page</b></p><div>== Carbeth Lava Member [http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=CBTL (CBTL)], Kilpatrick Hills, Carboniferous, Midland Valley of Scotland ==<br /> <br /> The Carbeth Lava Member is part of the [[Clyde Plateau Volcanic Formation]].<br /> <br /> === Name ===<br /> Previously named the Carbeth Lavas (Hall et al., 1998)&lt;ref name=&quot;hall98&quot;&gt;Hall, I H S, Browne, M A E, and Forsyth, I H. 1998. Geology of the Glasgow district. &#039;&#039;Memoir of the British Geological Survey&#039;&#039;, Sheet 30E (Scotland)&lt;/ref&gt;.<br /> <br /> === Lithology ===<br /> Mainly plagioclase-macrophyric basalt (‘Markle’ type). There are also some plagioclase-microphyric basalts (‘Jedburgh’ type) and olivine-clinopyroxene-plagioclase-macrophyric basalts (‘Dunsapie’ type), as well as some mugearites near the base.<br /> <br /> === Stratotype ===<br /> The lavas are well exposed in the type area around Carbeth (NS 527 796) and in the scarps around the Birny Hills (NS 495 770) (see Hall et al., 1998)&lt;ref name=&quot;hall98&quot;/&gt;. A reference section was encountered in the Loch Humphrey Borehole (BGS Registration Number NS47NE/1) (NS 4582 7555) beneath the [[Greenside Volcaniclastic Member]] and above the [[Auchineden Lava Member]]. In the borehole, it is 20 m thick and consists of ‘Markle’ type lavas with some ‘Jedburgh’ type and some thin beds of tuff. A geological log is available.<br /> <br /> === Lower and upper boundaries ===<br /> The Carbeth Lava Member overlies the plagioclase-microphyric basalts (‘Jedburgh’ type) of the [[Auchineden Lava Member]].<br /> <br /> The member is unconformably overlain by the [[Greenside Volcaniclastic Member]]. West of Loch Humphrey (NS 455 760) the member is reduced to one lava flow, which is preserved only in isolated patches below the volcaniclastic sedimentary rocks of the [[Greenside Volcaniclastic Member]].<br /> <br /> === Thickness ===<br /> Between 0 and 150 m. From the central part of the Kilpatrick Hills the member thins out towards the SW, partly due to erosion. It is some 80 m thick in the north-east of the region (Hall et al., 1998&lt;ref name=&quot;hall98&quot;/&gt;, table 5).<br /> <br /> === Distribution and regional correlation ===<br /> The Carbeth Lava Member is geographically widespread in the Kilpatrick Hills, stretching from Strath Blane (NS 560 790) in the north-east to Brown Hill (NS 445 764) in the south-west. The member is well exposed around Carbeth and in the Birny Hills (see above).<br /> <br /> === Age ===<br /> Mid Visean (Arundian to Asbian).<br /> <br /> == References ==<br /> &lt;references/&gt;<br /> [[Category:Carboniferous lithostratigraphical nomenclature]]<br /> <br /> == References ==<br /> &lt;references/&gt;<br /> [[Category:Carboniferous lithostratigraphical nomenclature]]</div>

Geosource>Volunteer 01