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INNER CORE SOLIDIFICATION

Geodynamo recharged

Nature Geosciencevolume 12pages8384 (2019) | Download Citation

Transition from a weak and erratic geomagnetic field to a more stable one around 560 million years ago, inferred from palaeomagnetic measurements, suggests that the inner core may have solidified around that time, much later than thought.

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References

  1. 1.

    Lehmann, I. Publ. Bur. Centr. Seism. Internat. Serie A 14, 87–115 (1936).

  2. 2.

    Bono, R. K., Tarduno, J. A., Nimmo, F. & Cottrell, R. D. Nat. Geosci. https://doi.org/10.1038/s41561-018-0288-0 (2019).

  3. 3.

    Driscoll, P. E. Geophys. Res. Lett. 43, 5680–5687 (2016).

  4. 4.

    Landeau, M., Aubert, J. & Olson, P. Earth Planet. Sci. Lett. 465, 193–204 (2017).

  5. 5.

    Robert, B., Greff-Lefftz, M. & Besse, J. Geochem. Geophys. Geosyst. 19, 3478–3495 (2018).

  6. 6.

    Bazhenov, M. L. et al. Earth Planet. Sci. Lett. 435, 124–135 (2016).

  7. 7.

    Halls, H. C., Lovette, A., Hamilton, M. & Söderlund, U. Precambrian Res. 257, 137–166 (2015).

  8. 8.

    Abrajevitch, A. & Van der Voo, R. Earth Planet. Sci. Lett. 293, 164–170 (2010).

  9. 9.

    Driscoll, P. & Bercovici, D. Phys. Earth Planet. In. 236, 36–51 (2014).

  10. 10.

    Davies, C. J. Phys. Earth Planet. In. 247, 65–79 (2015).

  11. 11.

    Labrosse, S. Phys. Earth Planet. In. 247, 36–55 (2015).

  12. 12.

    Nimmo, F. in Treatise on Geo-Physics 2nd edn (ed. Schubert, G.) 27–55 (Elsevier, Oxford, 2015).

  13. 13.

    Olson, P. Science 342, 431–432 (2013).

  14. 14.

    Hirose, K. et al. Nature 543, 99–102 (2017).

  15. 15.

    O’Rourke, J. G. & Stevenson, D. J. Nature 529, 387–389 (2016).

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  1. Carnegie Institution for Science, Washington DC, USA

    • Peter Driscoll

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Correspondence to Peter Driscoll.

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https://doi.org/10.1038/s41561-019-0301-2

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