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Progress in Earth and Planetary Science
Fig. 2 | Progress in Earth and Planetary Science

Fig. 2

From: Iron snow, crystal floats, and inner-core growth: modes of core solidification and implications for dynamos in terrestrial planets and moons

Fig. 2

Radius of solid inner Fe core and thickness of solid FeS layer. Relative radius of the solid inner Fe core (blue lines) and thickness of the solid FeS layer (green lines) as a function of the sulfur content in the fluid part of the core and depending on the initial sulfur content. R i is the inner-core radius, R c the core radius, and R FeS the radius of the lower boundary to the solid FeS layer. Shown are initial sulfur concentrations of 1, 7, 14, 15, 19, 21, 28, and 35 wt.%. The solid and dashed vertical lines indicate the eutectic sulfur concentration at different pressures (14 wt.% corresponds to ~30 GPa and 20 wt.% to ~10 GPa). Left of the eutectic a solid inner Fe core and right of the eutectic a solid FeS layer are formed. The relative inner-core radius and FeS layer thickness are smaller the closer the sulfur content is to the eutectic

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