Nature 245, 361 - 363 (19 October 1973); doi:10.1038/245361a0

Does the Mantle Roll?

R. B. HARGRAVES^* & R. A. DUNCAN^†

Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey 08540
^*Present address: Department of Geophysics and Geochemistry, The Australian National University, Canberra, ACT, Australia.
^†Present address: c/o Bernard Price Institute for Geophysics, Witwatersrand University, Jan Smuts Avenue, Johannesburg, South Africa.

Comparison of plume traces with palaeomagnetic data from lithospheric plates for the past 50 m.y. suggests that the mantle has rolled about its own independent axis within an outer lithospheric shell which as a whole is fixed in respect to the Earth's spin axis.

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