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Zur chemie der marsoberfläche |
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| Authors: | Klaus Keil Benton C Clark A K Baird Priestley Toulmin III Harry J Rose Jr |
| Institution: | 1. Department of Geology and Institute of Meteoritics, University of New Mexico, 87131, Albuquerque, New Mexico, USA 2. Planetary Sciences Laboratory, Martin Marietta Aerospace, 80201, Denver, Colorado, USA 3. Department of Geology, Pomona College, 91711, Claremont, California, USA 4. U.S. Geological Survey, 22092, Reston, Virginia, USA |
| Abstract: | Analyses of 13 samples of Martian surface materials with the Viking X-ray fluorescence spectrometers show SiO2 similar to that of terrestrial mafic rocks, whereas Fe2O3, Cl, and S are higher and Al2O3, K2O, Rb, Sr, Y, and Zr are lower. Low totals suggest presence of CO2, H2O, and Na2O. Duricrust fragments are higher in S than fines, but samples from both landing sites are surprisingly similar. We suggest that Martian surface materials are aeolian deposits of complex mixtures of weathering products of maficultramafic rocks, possibly consisting of iron-rich clays, sulfates, iron oxides, carbonates, and chlorides. |
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