Klingelhofer, G., McLennan, S.M.
The Mars Exploration Rover Opportunity has collected extensive field data from Meridiani Planum, enabling insights into the mineral assemblages and bulk chemistry that reflect the site's geological history, particularly the influence of aqueous processes. This study aims to quantify the maximum duration of liquid water in contact with jarosite-bearing rocks. We analyze the dissolution kinetics of jarosite under conditions analogous to those on Mars, considering factors such as acidity and oxidation. The results indicate that the preservation of jarosite requires arid conditions, as prolonged contact with aqueous fluids leads to its dissolution and transformation into more stable iron (hydr)oxide phases, namely goethite or hematite. These findings provide a quantitative measure of the aqueous activity at Meridiani Planum, linking the presence of jarosite to specific geochemical conditions reflective of past aqueous environments on Mars. The implications of this research highlight the geological processes that have shaped the Martian surface, enhancing our understanding of Martian aqueous history and the potential for past life.
@article{af0c7740-96c0-47be-97c7-eb254606833e,
title={How long was Meridiani Planum wet Applyi},
author={Klingelhofer and G. and McLennan and S.M.},
year={2026},
language={en}
}TY - JOUR TI - How long was Meridiani Planum wet Applyi AU - Klingelhofer AU - G. AU - McLennan AU - S.M. PY - 2026 LA - en ER -
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