Ontology highlight
ABSTRACT:
SUBMITTER: Bishop JL
PROVIDER: S-EPMC7007808 | biostudies-literature | 2008 Aug
REPOSITORIES: biostudies-literature
Bishop Janice L JL Dobrea Eldar Z Noe EZ McKeown Nancy K NK Parente Mario M Ehlmann Bethany L BL Michalski Joseph R JR Milliken Ralph E RE Poulet Francois F Swayze Gregg A GA Mustard John F JF Murchie Scott L SL Bibring Jean-Pierre JP
Science (New York, N.Y.) 20080801 5890
Observations by the Mars Reconnaissance Orbiter/Compact Reconnaissance Imaging Spectrometer for Mars in the Mawrth Vallis region show several phyllosilicate species, indicating a wide range of past aqueous activity. Iron/magnesium (Fe/Mg)-smectite is observed in light-toned outcrops that probably formed via aqueous alteration of basalt of the ancient cratered terrain. This unit is overlain by rocks rich in hydrated silica, montmorillonite, and kaolinite that may have formed via subsequent leachi ...[more]