Palaeomagnetic field intensity variations suggest Mesoproterozoic inner-core nucleation

A. J. Biggin (), E. J. Piispa, L. J. Pesonen, R. Holme, G. A. Paterson, T. Veikkolainen and L. Tauxe
Additional contact information
A. J. Biggin: Ocean and Ecological Sciences, University of Liverpool
E. J. Piispa: Michigan Technological University
L. J. Pesonen: PB 64, FI-00014 University of Helsinki
R. Holme: Ocean and Ecological Sciences, University of Liverpool
G. A. Paterson: Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences
T. Veikkolainen: PB 64, FI-00014 University of Helsinki
L. Tauxe: Scripps Institution of Oceanography, University of California San Diego

Nature, 2015, vol. 526, issue 7572, 245-248

Abstract: Analysis of a database of Precambrian palaeomagnetic intensity measurements reveals a clear transition in the Earth’s magnetic field that is probably the signature of the inner core first forming, suggesting a modest value of core thermal conductivity and supporting a simple thermal evolution model for the Earth.

Date: 2015
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DOI: 10.1038/nature15523

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