The Geological Society, Journal of the Geological Society, 1(147), p. 59-68, 1990
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A majorcompositeterrane,theSunnfjordMelange,has been identified int he West Norwegian Caledonides. The rocks of the melange provide a terrane-link between the allochthonous continental rocks of the Dalsfjord Suite with its cover of continental margin deposits and the oceanic terrane of the Solund-Stavfjord Ophiolite Complex. The melange was formed as the ophiolite was emplaced on the the fossiliferous Lowerto Middle Silurian continental margin deposits of the Herland Group. This group unconformably overlies older metasedimentary roocfksthe H0yvik Group and the crystallinebasementoftheDalsfjordSuite. A structuralstylecharacteristic ofthin-skinnedthrust- foldbeltsislocallypreservedwithintheHerlandGroupon Atby, andthethrust-foldbeltwas developed in the foreland of the continental margin during the ophiolite accretion. A U-Pb zircon age of 443 f 3 Ma from the ophiolite, the Silurian fossils in the Herland Group and the identification of the Sunnfjord Melange as an obduction melange provide the basis for a well constrained model of ophiolite accretion in the Scandinavian Caledonides.