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Between the North Sea and the Baltic Sea lie a peninsula and a number of islands which, from early times, have been the home of the Danes. On a globe these lands appear as a tiny patch, even if their situation is sharply defined and easily found, and in fact on a map of Europe their extent is only small, and yet, for more than a thousand years they have formed an independent state, Denmark.There are few countries to whom the sea has been of greater significance than it has been to this one, and few peoples have felt themselves more closely connected with the sea than the Danes. Whereas elsewhere the sea is more nearly a dividing factor, to Denmark it has been that which united the islands and the peninsula into one whole; it formed the high-roads round which the Danish realm grew up at the close of antiquity. It is the geological structure of this country that will be briefly sketched in this work.
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Andersen et al. (1928) studied this question.