Spectroscopic analyses of Fe and water in clays: A Martian surface weathering study

Details Spectroscopic analyses of Fe and water in clays: A Martian surface weathering study Spectroscopic analyses of Fe and water in clays: A Martian surface weathering study

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept..240b&link_type=abstract

In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 240-241 (SEE N92-10728 01-91)

Physics

Geophysics

Clays, Ice, Mars (Planet), Mars Surface, Planetary Geology, Reflectance, Spectroscopic Analysis, Spectroscopy, Water, Weathering, Bending Vibration, Bonding, Characterization, Crystals, Iron, Low Frequencies, Morphology, Near Infrared Radiation, Stretching

Scientific paper

Martian surface morphology suggests the presence of liquid H2O on Mars in the past. Reflectance spectra of the Martian surface include features which correspond to the crystal field transitions of iron, as well as features supporting the presence of ice and minerals containing structural OH and surface water. Researchers initiated further spectroscopic studies of surface iron and water and structural OH in clays in order to determine what remotely obtained spectra can indicate about the presence of clays on Mars based on a clearer understanding of the factors influencing the spectral features. Current technology allows researchers to better correlate the low frequency fundamental stretching and bending vibrations of O-H bonds with the diagnostic near infrared overtone and combination bands used in mineral characterization and identification.

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