The surface of Syrtis Major - Composition of the volcanic substrate and mixing with altered dust and soil

Details The surface of Syrtis Major - Composition of the volcanic substrate and mixing with altered dust and soil The surface of Syrtis Major - Composition of the volcanic substrate and mixing with altered dust and soil

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.3387m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E2, p. 3387-3400.

Physics

99

Dust, Mars Surface, Mars Volcanoes, Mineralogy, Planetary Geology, Soils, Basalt, Geochemistry, Spectral Reflectance, Mars, Syrtis Major Region, Surface, Composition, Substrate, Mixing, Dust, Soil, Spectra, Ism Instrument, Phobos 2 Mission, Procedure, Spacecraft Observations, Analysis, Reflectance, Mineralogy, Basalts, Volcanoes, Albedo, Wavelengths, Volcanic Rocks, Iron, Visible Light, Near-Infrared, Absorption, Mafic Material, Pyroxene, Lithology

Scientific paper

The study characterizes Syrtis Major, an old, low relief volcanic plateau near the equatorial regions of Mars, on the basis of ISM data in order to characterize the spectral properties of the surface, to identify the major mafic mineralogy of the volcanic materials, and to derive estimates of the chemistry of these minerals. The value and spatial distribution of four primary spectral variables (albedo, continuum slope, wavelength of the ferric-ferrous band minimum, and area of the ferric-ferrous absorption) are mapped and coregistered to Viking digital photomosaics. It is shown that although there is a high degree of overall spectral variability on the plateau, the key indicators of mafic mineralogy are relatively homogeneous.

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