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Global mineralogical and aqueous mars history derived from OMEGA/Mars express data

J.-P. Bibring 1 Y. Langevin 1 John F. Mustard 2 F. Poulet 1 Raymond Arvidson 3 Aline Gendrin 1, 2 B. Gondet 1 Nicolas Mangold 4 P. Pinet 5 F. Forget 6 The Omega Team Michel Berthe 1 Cecile Gomez 1 Denis Jouglet 1 Alain Soufflot 1 M. Vincendon 1 M. Combes 7 P. Drossart 7 T. Encrenaz 7 T. Fouchet 7 R. Melchiorri 7 G. Bellucci 8 F. Altieri 8 V. Formisano 8 F. Capaccioni 9 P. Cerroni 9 A. Coradini 9 S. Fonti 10 O. Korablev 11 Volodia Kottsov 11 N. Ignatiev 11 L. V. Moroz 11 D. Titov 11 Ludmilla Zasova 11 Damien Loiseau 4 Sylvain Douté 12 Bernard Schmitt 12 Christophe Sotin 13 Ernst Hauber 14 Harald Hoffmann 14 R. Jaumann 14 U. Keller 15 Tom Duxbury 16 G. Neukum 17
Abstract : Global mineralogical mapping of Mars by the Observatoire pour la Mineralogie, l'Eau, les Glaces et l'Activite (OMEGA) instrument on the European Space Agency's Mars Express spacecraft provides new information on Mars' geological and climatic history. Phyllosilicates formed by aqueous alteration very early in the planet's history (the "phyllocian" era) are found in the oldest terrains; sulfates were formed in a second era (the "theiikian" era) in an acidic environment. Beginning about 3.5 billion years ago, the last era (the "siderikian") is dominated by the formation of anhydrous ferric oxides in a slow superficial weathering, without liquid water playing a major role across the planet.
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Submitted on : Tuesday, February 24, 2009 - 8:38:25 AM
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J.-P. Bibring, Y. Langevin, John F. Mustard, F. Poulet, Raymond Arvidson, et al.. Global mineralogical and aqueous mars history derived from OMEGA/Mars express data. Science, American Association for the Advancement of Science, 2006, 312 (5772), pp.400-404. ⟨10.1126/science.1122659⟩. ⟨insu-00363634⟩



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