Abstract
A SATISFACTORY geological map of the world is of so much help that we turn with interest to the first four sheets of this map, which is being prepared for the Prussian Geological Survey by Prof. Beyschlag and edited by Dr. W. Schriel. Th¨ map will consist of twelve sheets. The first section consists of the four northern sheets, which include Europe, northern Asia, and Canada, and the northern parts of the United States. The scale is 1:15,000,000, so that the map gives only a general survey of the main geological divisions. The colouring is clear and the primary geological structure is well shown. The largest areas left blank in these sheets are in Mongolia and along the Amur Valley: they are probably as well known as parts of north-eastern Siberia, which are fully coloured.
Geologische Karte der Erde.
Von Franz Beyschlag. Bearbeitet mit Unterstützung durch die Preussische Geologische Landesanstalt. 1:15,000,000. Lieferung 1, enthaltend die Blätter 1, 2, 3, 4. (Berlin: Gebrüder Borntraeger, 1929.) Subskriptionpreis der vollständigen Karte, 150 g.m.
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Geologische Karte der Erde . Nature 125, 488 (1930). https://doi.org/10.1038/125488a0
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DOI: https://doi.org/10.1038/125488a0