User:Smith609/Kerrera

=Age of Lorne Plateau=  Dr B. J. Bluck (personal communication) points out that lavas above the myriapod-yielding strata near Oban have recently been dated ca. 410 Ma (Thirlwall, in Clayburn et al. 1983 )

Devonian Lorne Plateau lavas, overly my section.
 * 416±6Ma at NM789276
 * 424 ± 6Ma ;
 * 420.5 ± 4.3 (mean of five Rb–Sr biotite–clinopyroxene determinations) and 423.5 ± 6.1 Ma (by Rb–Sr biotite–apatite)Ma: "probably 415-424 Ma old." Def over 411.7 because a solidly-dated dyke of that age cross-cuts them. NM831280. for the Lorne Plateau lavas and their feeders, and 421 ± 4 Ma (an 40Ar–39Ar plateau age from hornblende) for an early flow from the Glencoe Volcano (errors are 2{sigma}).

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http://www.lancs.ac.uk/postgrad/morrisg1/kergeol.htm