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Are there carbonate deposits in the Valles Marineris, Mars?The precipitation of 30 mbar of Martian atmosphere CO2 as carbonates in lakes is suggested to be the source of thick sequences of layered deposits found in the Valles Marineris. Support is adduced for this scenario from processes occurring in the perennially frozen dry valley lakes of Antarctica, where the lake water is supersaturated with atmospheric gases. Atmospheric CO2 would have accumulated in such Martian lakes as temperature fell, and the presence of an insulating ice cover would have allowed liquid water to exist.
Document ID
19890016991
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nedell, Susan S.
(NASA Ames Research Center Moffett Field, CA, United States)
Mckay, Christopher P.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1989
Publication Information
Publication: Exobiology and Future Mars Missions
Subject Category
Lunar And Planetary Exploration
Accession Number
89N26362
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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