Abstract
MUCH interest attaches to the researches of the Swedish geologists among the older crystalline rocks of Scandinavia. In the year 1873 Mr. A. E. Törnebohm published an important paper in which he showed that in the high grounds of Sweden Lower Silurian rocks, with recognisable fossils, pass up conformably into a vast overlying series of quartzites, schists, and gneisses. These metamorphic rocks were divided by him into two groups—the Seve group, composed mainly of quartzites and schists, and the Köli group, consisting largely of mica-schists and clay-slates. In another memoir just published he furnishes additional information regarding the succession of these rocks. The old or fundamental (Archæan) rocks composed of gneiss, granite, &c., are overlain by thick masses of reddish sandstones, followed by quartzites and limestones, over which come Augen-gneiss, hornblende-schist, mica-schist, &c. This order of sequence, which is shown in numerous natural sections, will be at once recognised as that which Murchison first showed to be the stratigraphical succession in the north-west of Scotland. It is interesting to find that the parallelism which was traced many years ago between the structure of the Highlands of Scotland and the uplands of Scandinavia continues to be confirmed by the more detailed surveys of recent years.
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Metamorphic Rocks of Scandinavia and Scotland . Nature 28, 7–8 (1883). https://doi.org/10.1038/028007i0
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DOI: https://doi.org/10.1038/028007i0