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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Olivine and pyroxene diversity in the crust of Mars.

Data from the Observatoire pour la Minéralogie, l'Eau, les Glaces, et l'Activité (OMEGA) on the Mars Express spacecraft identify the distinct mafic, rock-forming minerals olivine, low-calcium pyroxene (LCP), and high-calcium pyroxene ( HCP) on the surface of Mars. Olivine- and HCP-rich regions are found in deposits that span the age range of geologic units. However, LCP-rich regions are found only in the ancient Noachian-aged units, which suggests that melts for these deposits were derived from a mantle depleted in aluminum and calcium. Extended dark regions in the northern plains exhibit no evidence of strong mafic absorptions or absorptions due to hydrated materials.[1]

References

  1. Olivine and pyroxene diversity in the crust of Mars. Mustard, J.F., Poulet, F., Gendrin, A., Bibring, J.P., Langevin, Y., Gondet, B., Mangold, N., Bellucci, G., Altieri, F. Science (2005) [Pubmed]
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