Amazonian Hydrothermal Alteration Comparing Nakhlite Secondary Mineralogy to Water Rock Reaction Experiments

Bridges, J. C.; Hicks, L. J.; Miller, M. A.; Schwenzer, S. P.; Ott, U.; Filiberto, J.; Chavez, C.; Smith, H.; Treiman, A. H.; Kelley, S. P.; Moore, J. M.; Swindle, T. D.; Bullock, M. A.; McIntosh, R. A. and Craig, P. (2018). Amazonian Hydrothermal Alteration Comparing Nakhlite Secondary Mineralogy to Water Rock Reaction Experiments. In: 49th Lunar and Planetary Science Conference, 19-23 Mar 2018, The Woodlands, Houston, Texas, USA.

URL: https://www.hou.usra.edu/meetings/lpsc2018/pdf/202...

Abstract

We report on results from experiments with Mars analog materials under diagenetic conditions. The mineralogical results of our experiments suggest that an important type of fluid alteration in the Amazonian may be short duration (e.g. less than 1 year) events from near neutral, dilute brines, that were able to exchange CO2 either directly, or via ice reservoirs, with the atmosphere.

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