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Possible mechanism of continental breakup in the North Atlantic


NEW observations from the Skaergård area have provided evidence relating to the mechanism of continental breakup in the North Atlantic. The East Greenland coastal flexure and its associated dyke swarm1 has become a classic of this type of structure and has been frequently compared with similar structures around the world, notably the Lebombo monocline of sooth-east Africa2,3. No new data have appeared in print, however, since the original description by Wager and Deer1. I have had (the opportunity to examine the structures in the Skaegård area (68 °N, 32 °W), and report here my observations on the mechanism of flexuring and dyke intrusion, which is believed to be very similar to structures described from areas of present spreading, such as Afar4.

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  1. Wager, L. R., and Deer, W. A., Geol. Mag., 75, 39 (1938).

    Article  ADS  Google Scholar 

  2. Du Toit, A. L., Trans. R. Soc. Un. S. Afr., 18, 189 (1930).

    Article  Google Scholar 

  3. Cox, K. G., in African Magmatism and Tectonics, (edit. by Clifford, T. N., and Gass, I. G.), 211, (Oliver and Boyd, Edinburgh and London, 1969).

    Google Scholar 

  4. Mohr, P. A., Astrophys. Obs. Special Report, 339 (1971).

  5. Wager, L. R., and Deer, W. A., Meddr Grønland, 134, 5 (1947).

    Google Scholar 

  6. Wager, L. R., and Deer, W. A., Meddr Grønland, 105, 4 (1939).

    Google Scholar 

  7. Brooks, C. K., Nature phys. Sci., 244, 23 (1973).

    Article  ADS  Google Scholar 

  8. Wager, L. R., and Brown, G. M., Layered Intrusions (Oliver and Boyd, Edinburgh and London, 1968).

    Google Scholar 

  9. Blank, H. R., and Gettings, M. E., Eos, 53, 4, 507 (1972).

    Article  Google Scholar 

  10. Maaloe, S., Eos, 55, 4, 459 (1973).

    Google Scholar 

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NIELSEN, T. Possible mechanism of continental breakup in the North Atlantic. Nature 253, 182–184 (1975).

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