Abstract
J.J. SEDERHOLM'S summary of the prequaternary rocks of Fennoscandia, with its admirable coloured geological map of Norway, Sweden, and Finland, is now issued in French as Bulletin 24 of the Commission geologique de Finlande. Under the director's active guidance, six further bulletins were published in 1911. V. Tanner has drawn a number of interesting conclusions from his discovery of brachiopods, resembling Kutorgina or Acrotreta, in dyke-like masses of sandstone filling cracks in granite in the Aland Islands, at the entry to the Gulf of Finland (Bull. 25, p. 10). These fossils are probably of Lower Cambrian age, and the cracks were opened, perhaps through earthquake action, in a surface of pre-Cambrian rocks which had been already worn down to a peneplane. It is urged that the present Fennoscandian peneplane, which includes the surface of the islands, represents only a small further degradation of that which was formed towards the close of pre-Cambrian times.
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C., G. Regional Geology in Europe . Nature 89, 670–672 (1912). https://doi.org/10.1038/089670a0
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DOI: https://doi.org/10.1038/089670a0
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