With this corrigendum we correct the erroneous vaporiza- tion curve (previously indicated as liquidus) in Fig. 6 and further clarify the discussion regarding the state of the core under the expected pressure/temperature conditions. The phase transition points in the SiO 2 quotidian equation of state (QEOS) from Vazan et al. (2013) used to construct the vaporization curve were shifted to lower P-T values by inaccurate scaling of the zero- energy and bulk density parameters in their equation of state calculation. The effects of this error on our results are lim- ited to the graph and discussion of the core-surface conditions presented in Sect. 4.2 because we did not use this equation of state in our simulations and only used it to determine the SiO 2 phase at the core surface. In Fig. 1 we show the corrected figure, which replaces Fig. 6 of the paper. Figure 2, for reference, shows the corrected and erroneous QEOS curves as well as the vapor pressure and solidus.
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