The Bruce Murray Space Image Library
The Martian mineralogical time scale
Filed under mineralogy and petrology, spectroscopy, Mars Express, geology, explaining science, Mars
Bibring et al (2006)'s new paradigm for Mars' geologic time scale included "three sequential eras characterized by their surface alteration products: (i) a nonacidic aqueous alteration, traced by phyllosilicates (the 'phyllosian' era); (ii) an acidic aqueous alteration, traced by sulfates (the 'theiikian' era); and (iii) an atmospheric aqueous-free alteration, traced by ferric oxides (the 'siderikian' era)."
Jean-Pierre Bibring et al., 2006
Original image data dated on or about April 1, 2006
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