The complex three-dimensional structure of the Earth's solid inner core reveals how it has grown through time. Numerical simulations of the solidification process suggest that part of this structure has resulted from recent tectonic activity.
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Olson, P. Tectonics in the Earth's core. Nature Geosci 2, 379–380 (2009). https://doi.org/10.1038/ngeo534
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DOI: https://doi.org/10.1038/ngeo534
