Journal
SCIENCE
Volume 307, Issue 5715, Pages 1576-1581Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1108806
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The Observatoire pour [a Mineralogie, l'Eau, les Glaces, et I'Activite (OMEGA) investigation, on board the European Space Agency Mars Express mission, is mapping the surface composition of Mars at a 0.3- to 5-kilometer resolution by means of visible-near-infrared hyperspectral reflectance imagery. The data acquired during, the first 9 months of the mission already reveal a diverse and complex surface mineralogy, offering key insights into the evolution of Mars. OMEGA has identified and mapped mafic iron-bearing silicates of both the northern and southern crust, localized concentrations of hydrated phyllosilicates and sulfates but nocarbonates, and ices and frosts with a water-ice composition of the north polar perennial cap, as for the south cap, covered by a thin carbon dioxide-ice veneer.
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