Aureum Chaos - Evidence from water-related minerals

Details Aureum Chaos - Evidence from water-related minerals Aureum Chaos - Evidence from water-related minerals

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..816s&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.816

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Hyperspectral studies have shown that a variety of waterrelated minerals is present on the Martian surface. Analyzing these minerals can shed light on prevailing past and ongoing environmental conditions. We identified and mapped hydrated minerals in Aureum Chaos to understand their stratigraphy and geological context based on high resolution short wave infrared data from CRISM, imagery and elevation data. Differently from most sulfate-rich regions on Mars, we could identify phyllosilicate indicating that local conditions could have allowed clay formation after the well-accepted global "phyllosian" era that is assumed for Early Mars. We will present sulfate formation models and relative timing of mineral formation.

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