Special Reports

Sulfates in Martian Layered Terrains: The OMEGA/Mars Express View

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Science  11 Mar 2005:
Vol. 307, Issue 5715, pp. 1587-1591
DOI: 10.1126/science.1109087

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Abstract

The OMEGA/Mars Express hyperspectral imager identified hydrated sulfates on light-toned layered terrains on Mars. Outcrops in Valles Marineris, Margaritifer Sinus, and Terra Meridiani show evidence for kieserite, gypsum, and polyhydrated sulfates. This identification has its basis in vibrational absorptions between 1.3 and 2.5 micrometers. These minerals constitute direct records of the past aqueous activity on Mars.

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