Caledonian correlations: Britain and Scandinavia

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Abstract
Summary: While there is widespread evidence of climactic late-Silurian thrusting in the southern Scandinavian Caledonides the scale of comparable early Ordovician (Grampian) movements is not yet established. Only in the lower, eastern, marginal nappes is there evidence of continuous sedimentation from late Precambrian up into lower Palaeozoic. In the metamorphic allochthon no fossils older than Tremodocian have been discovered. Barrovian metamorphism which seems to vary from nappe to nappe is widely developed: no genuine LT/HP metamorphism is recorded. The North Sea basin, largely founded on Old Red Sandstone (ORS) deposits of the terminal Caledonian stage, covers the junction between the two distinct Caledonian provinces of Britain and Scandinavia.