Phyllosilicate-rich deposits at the bottom of a paleolake in Ismenius Lacus region, Mars

Details Phyllosilicate-rich deposits at the bottom of a paleolake in Ismenius Lacus region, Mars Phyllosilicate-rich deposits at the bottom of a paleolake in Ismenius Lacus region, Mars

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..447d&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.447

Physics

Scientific paper

We studied a 60 x 90 km crater-like depression in Ismenius Lacus region where phyllosilicates have been previously detected with OMEGA data [1]. A detailed analysis of the new high-resolution data (HiRISE and CTX images, HRSC DEM and CRISM hyperspectral cubes) available in the area shows that the phyllosilicates are associated with a layered unit at the foot of a deltaic structure located at the mouth of Mamers Vallis. The fluvial activity and thus the phyllosilicates-rich deposits being dated to the Hesperian, our results show that Mars, at that period, may have preserved regions where liquid water carried hydrated minerals without precipitating sulfates.

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