Table A.1
Bulk compositions of meteoritic end-members (EF, EC, OC, CI) and reference planetary bodies (Earth and Mars).
| EF | EC | OC | CI | Earth | Mars | |
|---|---|---|---|---|---|---|
| Silicate mantle composition (normalized to MgO = 1 by atomic) | ||||||
| MgO | 1.00000 | 1.00000 | 1.00000 | 1.00000 | 1.00000 | 1.00000 |
| Al2O3 | 0.05949 | 0.03337 | 0.03608 | 0.03966 | 0.04644 | 0.04578 |
| CaO | 0.08686 | 0.04738 | 0.05352 | 0.05791 | 0.06732 | 0.06678 |
| FeO | 0.00000 | 0.00000 | 0.49853 | 0.84387 | 0.11963 | 0.26604 |
| NiO | 0.00046 | 0.00051 | 0.00036 | 0.04601 | 0.00357 | 0.00080 |
| SiO2 | 0.40273 | 1.19006 | 1.06317 | 0.97042 | 0.79683 | 0.98460 |
| Core composition | ||||||
| Fe (core) | 1.09704 | 0.89852 | 0.16618 | 0.00000 | 0.79309 | 0.43189 |
| Ni (core) | 0.04555 | 0.05062 | 0.03543 | 0.00000 | 0.04502 | 0.03826 |
| Si (core) | 0.16497 | 0.05347 | 0.00000 | 0.00000 | 0.07377 | 0.00000 |
| O (core) | 0.00000 | 0.00000 | 0.00000 | 0.00000 | 0.06476 | 0.09861 |
Notes. Mantle compositions are reported as major oxides, whereas core compositions are reported as elemental abundances (Fe, Ni, Si, O). All values are normalized to MgO = 1 (atomic) instead of being fully specified within complete planetary bodies; thus, a unique core-mantle fraction (CMF) is not defined before differentiation modeling. Core elemental abundances are expressed on the same normalized scale (i.e., as bulk contributions relative to MgO), rather than as fractions within the core.
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