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Soil mineralogy and chemistry on Mars - Possible clues from salts and clays in SNC meteoritesIf the shergottite, nakhlite, and chassignite (SNC) meteorites' parent planet is Mars, then the aqueous precipitates found in them imply that oxidizing, water-based solutions may have been chemically active on that planet over the past 200-1300 million yrs. It is suggested that the mixture of aqueous precipitates found in the SNCs furnish a self-consistent model for the bulk elemental composition of surface sediments at the Viking Lander sites. Further mineralogical and stable-isotope studies of the secondary minerals may establish the limits for biological activity over the last 1300 million years of Mars' water-based chemistry.
Document ID
19930030880
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Gooding, James L.
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 16, 2013
Publication Date
September 1, 1992
Publication Information
Publication: Icarus
Volume: 99
Issue: 1
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
93A14877
Distribution Limits
Public
Copyright
Other

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