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Natural Remanent Magnetization of Pre-Cambrian Gneiss of Ongul Islands in the Antarctic


A NUMBER of rock samples of Pre-Cambrian biotite hornblende granodioritic gneiss from the Ongul Islands, where the Japanese Antarctic Research Base Syowa was set up, were collected by one of us (T.N.) in February 1957 and in January 1959. This was for the purpose of determining magnetic polarization of the antarctic rocks in view of recent progress in palæomagnetism, including the problems of polar wandering and continental drift.

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  1. 1

    Nagata, T., ‘Special Report on Palæomagnetism’, Trans. Rome Meeting A.G.A., I.U.G.G., 343.

  2. 2

    Yoshikawa, T., and Toya, H., Antarctic Report, No. 1, 1 (1957). Tatsumi, T., and Kikuchi, T., Antarctic Report, No. 7 (1959) (in the press).

  3. 3

    Gough, D. I., Mon. Not. Roy. Astro. Soc., Geophys. Suppl., 7, 196 (1956).

  4. 4

    Irving, E., and Green, R., Geophys. J. Roy. Astro. Soc., 1, 64 (1958).

  5. 5

    See, for example, a summary by Irving, E., Geophys. J. Roy. Astro. Soc., 2, 51 (1959).

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