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As a result of three recent expeditions to East Greenland a remarkable dyke swarm, following closely the general direction of the coast, has been found to run from the neighbourhood of Scoresby Sound to Angmagssalik, a distance of 500 miles. The dykes are dolerites of various kinds and for the most part they are intruded into a thick Tertiary basalt series and the underlying metamorphic compled.
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Wager et al. (1938) studied this question.
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