Letter | Published:

Morphology of North Macquarie Ridge

Naturevolume 207pages844845 (1965) | Download Citation



SOUNDINGS in the Southern Ocean between New Zealand and the Antarctic continent have been sufficient to permit definition of a general elevation of the sea floor extending from the Balleny Islands region, across the Pacific Antarctic and Indian Antarctic Ridge junction, north through Macquarie Island towards New Zealand. This elevation, the Macquarie Ridge, is commonly depicted on bathy-metric charts either as a substantially continuous feature at least as far north as Macquarie Island with its crest lying in depths between 1,000 and 2,000 metres; or as in the chart utilized by Adie1, with an extensive deep water gap separating the northern end of the Ridge from New Zealand.

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  1. 1

    Adie, R. J., in Pacific Basin Biogeography (Bishop Museum Press, Honolulu, 1963).

  2. 2

    Herdman, H. F. P., Disc. Rep., 25, 39 (1948).

  3. 3

    Fell, H. B., Nature, 193, 759 (1962).

  4. 4

    Deacon, G. E. R., Disc. Rep., 15, 1 (1937).

  5. 5

    Brodie, J. W., Geol. Rundsch., 47, 662 (1958).

  6. 6

    Dawson, E. W., Proc. Ecol. Soc. (in the press).

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  1. N.Z. Oceanographic Institute, Wellington, New Zealand

    • J. W. BRODIE
    •  & E. W. DAWSON


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