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Discovery of Olivine in the Nili Fossae Region of Mars

January 1, 2003

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.

Publication Year 2003
Title Discovery of Olivine in the Nili Fossae Region of Mars
DOI 10.1126/science.1089647
Authors T.M. Hoefen, R. N. Clark, J. L. Bandfield, M. D. Smith, J.C. Pearl, P. R. Christensen
Publication Type Article
Publication Subtype Journal Article
Series Title Science
Index ID 70025525
Record Source USGS Publications Warehouse