The Accretion, Composition and Early Differentiation of Mars

@article{Halliday2001TheAC,
  title={The Accretion, Composition and Early Differentiation of Mars},
  author={Alex N. Halliday and Heinrich W{\"a}nke and J-L. Birck and Robert Norman Clayton},
  journal={Space Science Reviews},
  year={2001},
  volume={96},
  pages={197-230}
}
The early development of Mars is of enormous interest, not just in its own right, but also because it provides unique insights into the earliest history of the Earth, a planet whose origins have been all but obliterated. Mars is not as depleted in moderately volatile elements as are other terrestrial planets. Judging by the data for Martian meteorites it has Rb/Sr ≈ 0.07 and K/U ≈ 19,000, both of which are roughly twice as high as the values for the Earth. The mantle of Mars is also twice as… 
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