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Indigenous organic-oxidized fluid interactions in the Tissint Mars meteorite

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Elizabeth A. Jaramillo, Samuel H. Royle, Mark W. Claire, Samuel P. Kounaves, Mark A. Sephton

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Abstract

The observed fall and rapid recovery of the Tissint Mars meteorite has provided minimally contaminated samples of the Martian surface. We report analyses of Tissint for organic compounds by pyrolysis-gas chromatography-mass spectrometry and for soluble salts by ion chromatography. Pyrolysis-gas chromatography-mass spectrometry analysis shows the presence of organic compounds similar to those in the Mars EETA79001 and Nakhla meteorites. The organic profile is dominated by aromatic hydrocarbons, including oxygen and nitrogen-containing aromatics, and sulfur-containing species including thiophenes. The soluble salts in Tissint are dominated by sulfate and various oxidation states of chlorine, including perchlorate. The organic compounds and salts in the soils from the Tissint recovery strewn field differ significantly from those found in Tissint suggesting minimal terrestrial contamination. Our results support the hypothesis that the soluble inorganic components of Tissint are most likely a result of indigenous fluid inclusion, thus providing a glimpse into the composition of early Martian fluids.
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Original languageEnglish
Pages (from-to)3090-3098
JournalGeophysical Research Letters
Volume46
Issue number6
Early online date18 Mar 2019
DOIs
Publication statusPublished - 28 Mar 2019

    Research areas

  • Mars, Meteorite, Organics, Salts, Fluids

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