Abstract
were traditionally interpreted as fragments of sub-oceanic, Iapetus-related, lithosphere,
incorporated into the Scandian nappe pile during the Caledonian orogeny. This interpretation
was first challenged by Van Roermund (1989) who described for the first time the occurrence of
garnet-bearing peridotites from an area around lake Friningen, northern Jämtland, central
Sweden. Here the ultramafic bodies consist
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