Author/Authors :
Wray، نويسنده , , James J. and Squyres، نويسنده , , Steven W. and Roach، نويسنده , , Leah H. and Bishop، نويسنده , , Janice L. and Mustard، نويسنده , , John F. and Noe Dobrea، نويسنده , , Eldar Z.، نويسنده ,
Abstract :
The region surrounding the Mawrth Vallis outflow channel on Mars hosts thick layered deposits containing diverse phyllosilicate minerals. Here we report detection of the Ca-sulfate bassanite on the outflow channel floor, requiring a more complex aqueous chemistry than previously inferred for this region. The sulfate-bearing materials underlie phyllosilicate-bearing strata, and provide an opportunity for testing proposed models of martian geochemical evolution with a future landed mission.
Keywords :
Spectroscopy , Mars , Surface , Mineralogy
