Abstract
Synopsis A survey of eight Silurian inliers in the southern Midland Valley of Scotland has identified four new metabentonite occurrences within the Telychian Stage of the Llandovery, in the Bavelaw Castle, Hagshaw Hills, Lesmahagow and Girvan Main inliers respectively. The bulk geochemical composition of the metabentonites highlights two broad associations: an intermediate/mafic, slightly alkaline group represented by the Lesmahagow samples, and a rhyodacitic group comprising samples from the other inliers surveyed. A potential correlation is proposed between a metabentonite from the Wether Law Linn Formation of the North Esk inlier and one from the west end of the neighbouring Bavelaw Castle inlier. The unique character of the Lesmahagow metabentonites will assist in further correlation studies of Upper Llandovery successions.
Published Version
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