Abstract
ATTENTION has lately been given to the following set of four postulates: (a) the Earth, Mars and Venus have a common primitive composition; (b) compressibility is essentially a smoothly varying function of pressure at pressures beyond 0.4 × 106 million atmospheres in all three planets; (c) the outer core of the Earth is a high-pressure modification of ultrabasic rock; (d) each planet has an inner core chemically distinct from the matter in the outer core.
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BULLEN, K. Composition of the Earth's Outer Core. Nature 174, 505 (1954). https://doi.org/10.1038/174505a0
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DOI: https://doi.org/10.1038/174505a0
