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Water soluble cations and the fluvial history of MarsThe electrical conductivity and water soluble Na, K, Ca, and Mg of aqueous solutions of terrestrial soils and finely divided igneous and metamorphic rocks were determined. Soils from dry terrestrial basins with a history of water accumulation as well as soils from the topographic lows of valleys accumulated water soluble cations, particularly Na and Ca. These soils as a group can be distinguished from the rocks or a second group of soils (leached upland soils and soils from sites other than the topographic lows of valleys) by significant differences in their mean electrical conductivity and water-soluble Na + Ca content. Similar measurements on multiple samples from the surface of Mars, collected by an automated long-range roving vehicle along a highlands-to-basin transect at sites with morphological features resembling dry riverlike channels, are suggested to determine the fluvial history of the planet.
Document ID
19750042325
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Silverman, M. P.
Munoz, E. F.
(NASA Ames Research Center Planetary Biology Div., Moffett Field, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
March 1, 1975
Publication Information
Publication: Icarus
Volume: 24
Subject Category
Lunar And Planetary Exploration
Accession Number
75A26397
Distribution Limits
Public
Copyright
Other

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