Abstract
GRIFFITHS1 suggested that the computer fits of Australia and Antarctica2–4 are not supported by geology and that a better fit can be obtained by moving Australia 250 km westwards along the coast of Antarctica in the computer fitted reconstructions. Griffiths's revised fit eliminates the overlap of the South Tasman Rise, now known to be of continental origin5, and the Iselin plateau. Laird et al.6 showed that new geological evidence from Tasmania and East Antarctica favour such a revised reconstruction over the older computer fits. We present a slight modification to the fits given by Griffiths and by Laird et al. that, in addition, allows a good fit of magnetic anomaly lineations and fracture zone trends on the India7 and Antarctic8 plates (Fig. 1). This revised reconstruction thus implies that India and Australia have been parts of the same plate since the time of anomaly 22 (about 50 Myr ago). It also substantially reduces the size of the postulated Greater India9–11 (Fig. 2).
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References
Griffiths, J. R. Nature 249, 336 (1974).
Smith, A. G. & Hallam, A. Nature 225, 139 (1970).
Sproll, W. P. & Dietz, R. S. Nature 222, 345 (1969).
McKenzie, D. & Sclater, J. G. Geophys. J. R. astr. Soc. 24, 437 (1971).
Kennett, J. P. et al. Initial Reports of the Deep Sea Drilling Project 29, 271–315 (1974).
Laird, M. G., Cooper, R. A. & Jago, J. B. Nature 265, 107 (1977).
Sclater, J. G. & Fisher, R. L. Geol. Soc. Am. Bull. 85, 683–702 (1974).
Schlich, R. Mém. Hors-Série Soc. Géol. de France no. 6 (1975).
Curray, J. & Moore, D. G. in The Geology of Continental Margins, 617 (Springer, New York, 1974).
Veevers, J. J., Powell, C. M. & Johnson, B. D. Earth planet. Sci. Lett. 27, 383 (1975).
Johnson, B. D., Powell, C. M. & Veevers, J. J. Bull. Geol. Soc. Am. 87, 1560 (1976).
Peirce, J. thesis, Massachusets Institute of Technology and Woods Hole Oceanographic Institution (1977).
Davies, T. A. et al. Initial Reports of the Deep Sea Drilling Project 26, 281–294 (1974).
Kaharoeddin, F. A., Weaver, F. M. & Wise, S. W. Antarctic J. US 8, 297 (1973).
Ewing, M., Eittreim, S., Truchan, M. & Ewing, J. Deep Sea Res. 16, 231 (1969).
Watkins, N. D., Gunn, B. M., Nougier, J. & Baksi, A. K. Bull. Geol. Soc. Amer. 85, 201 (1974).
Lambeth, A. J. J. R. Soc. N.S.W. 85, 14 (1952).
Weissel, J. K. & Hayes, D. E. in Antarctic Oceanology II: The Australian–New Zealand Sector, Antarctic Res. Series 19, 165 (American Geophysical Union, Washington, 1972).
Veevers, J. J., Jones, J. G. & Talent, J. A. Nature 229, 383 (1971).
Gansser, A. Ecologae Geol. Helv. 59, 831 (1966).
Mattauer, M. Earth planet. Sci. Lett. 28, 144 (1975).
Warsi, W. E. K. & Molnar, P. in Ecologie et Geologie de l'Himalyaya, Colloque International (Centre National de la Recherche Scientifique, Paris, in the press).
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NORTON, I., MOLNAR, P. Implications of a revised fit between Australia and Antarctica for the evolution of the Eastern Indian Ocean. Nature 267, 338–340 (1977). https://doi.org/10.1038/267338a0
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DOI: https://doi.org/10.1038/267338a0
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