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Spectral Reflectance and Morphologic Correlations in Eastern Terra Meridiani, Mars

Spectral Reflectance and Morphologic Correlations in Eastern Terra Meridiani, Mars

Publication date: 11 March 2005

Authors: Arvidson, R., et al.

Journal: Science
Volume: 307
Issue: 5715
Page: 1591
Year: 2005

Copyright: Science Magazine

The Mars Express Observatoire pour la Mineralogie, l'Eau, les Glaces, et l'Activite (OMEGA) hyperspectral image data covering eastern Terra Meridiani indicate the ubiquitous presence of molecular water in etched terrain materials that disconformably overlie heavily cratered terrains and underlie the hematite-bearing plains explored by the Opportunity rover. Identification of crystalline water in kieserite (MgSO4IH2O) is linked to materials exposed in a valley and plateau to the north of hematite-bearing plains. The mineralogical similarities between the etched terrain deposits examined with OMEGA data and the layered rocks examined by Opportunity imply that the ancient aqueous environments inferred from analyses of the rover data extend over regional scales.

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