NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Physical and chemical weatheringPhysical and chemical weathering processes that might be important on Mars are reviewed, and the limited observations, including relevant Viking results and laboratory simulations, are summarized. Physical weathering may have included rock splitting through growth of ice, salt or secondary silicate crystals in voids. Chemical weathering probably involved reactions of minerals with water, oxygen, and carbon dioxide, although predicted products vary sensitively with the abundance and physical form postulated for the water. On the basis of kinetics data for hydration of rock glass on earth, the fate of weathering-rind formation on glass-bearing Martian volcanic rocks is tentatively estimated to have been on the order of 0.1 to 4.5 cm/Gyr; lower rates would be expected for crystalline rocks.
Document ID
19930043874
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Gooding, James L.
(NASA Johnson Space Center Houston, TX, United States)
Arvidson, Raymond E.
(Washington Univ. Saint Louis, MO, United States)
Zolotov, Mikhail IU.
(RAN Inst. Geokhimii i Analiticheskoi Khimii, Moscow, Russia)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Mars (A93-27852 09-91)
Publisher: University of Arizona Press
Subject Category
Lunar And Planetary Exploration
Accession Number
93A27871
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available