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Palaeomagnetism, Potassium–Argon Ages and Petrology of some Volcanic Rocks

Abstract

Geological evidence obtained from samples of rocks from Cocos Island, Costa Rica, seems to agree with the idea that this island could have been a stepping stone for organisms migrating to the Galapagos Islands.

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References

  1. Shumway, G., and Chase, T. E., Occasional Papers Calif. Acad. Sci., 44, 11 (1963).

    Google Scholar 

  2. Merrill, G. P., Mus. Comp. Zool. Bull., 16, 235 (1893).

    Google Scholar 

  3. Chesterman, C. W., Proc. Calif. Acad. Sci., Fourth Series, 32, 339 (1963).

    Google Scholar 

  4. Chubb, L. J., Bernice P. Bishop Mus. Bull., 110, 1 (1933).

    Google Scholar 

  5. Macdonald, G. A., Bull. Geol. Soc. Amer., 60, 1541 (1949).

    Article  ADS  CAS  Google Scholar 

  6. Stewart, A., Proc. Calif. Acad. Sci., Fourth Series, 1, 375 (1912).

    Google Scholar 

  7. Vinton, K. W., Amer. J. Sci., 249, 356 (1951).

    Article  ADS  Google Scholar 

  8. Wilde, Pat, Deep-Sea Res., 13, 635 (1966).

    Google Scholar 

  9. Gutenberg, B., Bull. Geol. Soc. Amer., 62, 427 (1951).

    Article  ADS  Google Scholar 

  10. Shumway, G., J. Geol., 62, 573 (1954).

    Article  ADS  Google Scholar 

  11. Chayes, F., Mineralog. Mag., 34, 126 (1965).

    ADS  CAS  Google Scholar 

  12. Engel, A. E. J., Engel, C. G., and Havens, R. G., Bull. Geol. Soc. Amer., 76, 719 (1965).

    Article  ADS  CAS  Google Scholar 

  13. Engel, A. E. J., and Engel, C. G., Science, 146, 477 (1964).

    Article  ADS  CAS  Google Scholar 

  14. Doell, R. R., and Cox, A., in Methods in Palaeomagnetism, 159 (Elsevier, Amsterdam, 1967).

    Google Scholar 

  15. Doell, R. R., and Cox, A., in Methods in Palaeomagnetism, 136 (Elsevier, Amsterdam, 1967).

    Google Scholar 

  16. Doell, R. R., and Cox, A., in Methods in Palaeomagnetism, 241 (Elsevier, Amsterdam, 1967).

    Google Scholar 

  17. Tarling, D. H., Geophys. J., 11, 423 (1966).

    Article  ADS  Google Scholar 

  18. Cox, A., Hopkins, D. M., and Dalrymple, G. B., Bull. Geol. Soc. Amer., 77, 883 (1966).

    Article  ADS  Google Scholar 

  19. Lanphere, M. A., and Dalrymple, G. B., J. Geophys. Res., 70, 3497 (1965).

    Article  ADS  CAS  Google Scholar 

  20. Cox, A., Doell, R. R., and Dalrymple, G. B., Science, 144, 1537 (1964).

    Article  ADS  CAS  Google Scholar 

  21. Doell, R. R., Dalrymple, G. B., and Cox, A., J. Geophys. Res., 71, 531 (1966).

    Article  ADS  Google Scholar 

  22. McDougall, I., and Chamalaun, F. H., Nature, 212, 1415 (1966).

    Article  ADS  Google Scholar 

  23. Grommé, C. S., and Hay, R. L., Nature, 200, 560 (1963).

    Article  ADS  Google Scholar 

  24. Grommé, C. S., and Hay, R. L., Earth and Planet. Sci. Lett., 2, 111 (1967).

    Article  ADS  Google Scholar 

  25. Cox, A., Hopkins, D. M., and Dalrymple, G. B., Bull. Geol. Soc. Amer., 77, 883 (1966).

    Article  ADS  Google Scholar 

  26. Chamalaun, F. H., and McDougall, I., Nature, 210, 1212 (1966).

    Article  ADS  Google Scholar 

  27. McDougall, I., Allsopp, H. L., and Chamalaun, F. H., J. Geophys. Res., 71, 6107 (1966).

    Article  ADS  CAS  Google Scholar 

  28. Cox, A., and Dalrymple, G. B., J. Geophys. Res., 72, 2603 (1967).

    Article  ADS  Google Scholar 

  29. Ninkovich, D., Opdyke, N., Heezen, B. C., and Foster, J. H., Earth and Planet. Sci. Lett., 1, 476 (1966).

    Article  ADS  Google Scholar 

  30. Cox, A., and Dalrymple, G. B., Nature, 209, 776 (1966).

    Article  ADS  Google Scholar 

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DALRYMPLE, G., COX, A. Palaeomagnetism, Potassium–Argon Ages and Petrology of some Volcanic Rocks. Nature 217, 323–326 (1968). https://doi.org/10.1038/217323a0

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