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. 2003 Oct 24;302(5645):627-30.
doi: 10.1126/science.1089647.

Discovery of olivine in the Nili Fssae region of Mars

Todd M Hoefen  1 , Roger N Clark, Joshua L Bandfield, Michael D Smith, John C Pearl, Philip R Christensen
Affiliations

Discovery of olivine in the Nili Fssae region of Mars

Todd M Hoefen et al. Science. .

Abstract

We have detected a 30,000-square-kilometer area rich in olivine in the Nili Fossae region of Mars. Nili Fossae has been interpreted as a complex of grabens and fractures related to the formation of the Isidis impact basin. We propose that post-impact faulting of this area has exposed subsurface layers rich in olivine. Linear mixture analysis of Thermal Emission Spectrometer spectra shows surface exposures of 30% olivine, where the composition of the olivine ranges from Fo30 to Fo70.

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