Global Mineralogical and Aqueous Mars History Derived from OMEGA/Mars Express Data
Author:
Bibring Jean-Pierre12345, Langevin Yves12345, Mustard John F.12345, Poulet François12345, Arvidson Raymond12345, Gendrin Aline12345, Gondet Brigitte12345, Mangold Nicolas12345, Pinet P.12345, Forget F.12345, Berthé Michel12345, Bibring Jean-Pierre12345, Gendrin Aline12345, Gomez Cécile12345, Gondet Brigitte12345, Jouglet Denis12345, Poulet François12345, Soufflot Alain12345, Vincendon Mathieu12345, Combes Michel12345, Drossart Pierre12345, Encrenaz Thérèse12345, Fouchet Thierry12345, Merchiorri Riccardo12345, Belluci GianCarlo12345, Altieri Francesca12345, Formisano Vittorio12345, Capaccioni Fabricio12345, Cerroni Pricilla12345, Coradini Angioletta12345, Fonti Sergio12345, Korablev Oleg12345, Kottsov Volodia12345, Ignatiev Nikolai12345, Moroz Vassili12345, Titov Dimitri12345, Zasova Ludmilla12345, Loiseau Damien12345, Mangold Nicolas12345, Pinet Patrick12345, Douté Sylvain12345, Schmitt Bernard12345, Sotin Christophe12345, Hauber Ernst12345, Hoffmann Harald12345, Jaumann Ralf12345, Keller Uwe12345, Arvidson Ray12345, Mustard John F.12345, Duxbury Tom12345, Forget François12345, Neukum G.12345
Affiliation:
1. Institut d'Astrophysique Spatiale (IAS), Bâtiment 121, 91405 Orsay Campus, France. 2. Department of Geological Sciences, Brown University, Providence, RI 02912, USA. 3. Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA. 4. Interactions et Dynamique des Environnement de Surface (IDES), Bâtiment 509, 91405 Orsay Campus, France. 5. Observatoire Midi-Pyrénées, Toulouse, France.
Abstract
Global mineralogical mapping of Mars by the Observatoire pour la Mineralogie, l'Eau, les Glaces et l'Activité (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.
Publisher
American Association for the Advancement of Science (AAAS)
Subject
Multidisciplinary
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