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  • ...ed sedimentary rocks—the [https://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=PBV Benton Volcanic Group (Xtf )] of Milford Haven and Pebidian Supergroup (Xlv) of St David’s. ...
    8 KB (1,180 words) - 16:00, 28 July 2015
  • ...hin the Upper Carboniferous sequence, the Precambrian Johnston Complex and Benton Volcanic Group have been thrust northwards on the Johnston Thrust for some 4  km over ...
    12 KB (1,783 words) - 09:53, 5 May 2016