Chemical weathering of soils from the dry valleys of Antarctica: A terrestrial analog of Martian weathering processes

Details Chemical weathering of soils from the dry valleys of Antarctica: A terrestrial analog of Martian weathering processes Chemical weathering of soils from the dry valleys of Antarctica: A terrestrial analog of Martian weathering processes

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pggp.rept..437g&link_type=abstract

In NASA, Washington Repts. of Planetary Geol. and Geophys. Program, 1984 p 437-439 (SEE N85-23474 13-91)

Other

Antarctic Regions, Carbonates, Clays, Hydrates, Mars (Planet), Soils, Sulfates, Zeolites, Mars Volcanoes, Silica Glass, Silicates

Scientific paper

Martian soil subjected to chemical weathering processes could contain the following likely constituents: (1) fresh primary silicate material; (2) partially altered primary silicates; (3) secondary minerals, possibly including clay minerals, evaporites, carbonates, sulfates, hydrates, and zeolites; and (4) altered volcanic glass or impact glass. The soil may also include palogonite and other alteration products and secondary minerals. It is unlikely therefore that an equilibrium assemblage of minerals would be present. From the detailed study of the soils from the Dry Valleys of Antarctica, it is obvious that the complex processes in operation produce major changes in the parent materials, depending upon where the constituents reside and the degree to which weathering and diagenesis operates. It is clear that natural near surface environments, even in very cold and dry regions, may produce extremely complex soils. Extreme caution must be taken when interpreting the results and drawing conclusions, especially about possible processes operating in regoliths in cold, arid environments similar to those of the Dry Valleys or Mars.

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