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Science 29 March 1968:
Vol. 159. no. 3822, pp. 1453 - 1455
DOI: 10.1126/science.159.3822.1453
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Articles

Lunar and Martian Surfaces: Petrologic Significance of Absorption Bands in the Near-Infrared

John B. Adams 1

1 Jet Propulsion Laboratory, California Institute of Technology, Pasadena 91103

A reflection minimum at 1 micron, reported for Moon and for Mars, indicates olivine or iron- and calcium-bearing clinopyroxene, or both—major constituents of many basaltic rocks. If the 1-micron absorption features are real, both chondritic and acidic rocks are ruled out as primary constituents of the surfaces of the bodies. The reflectance spectrum of Mars matches closely that of an oxidized basalt.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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M. J. S. Belton, M. J. S. Belton, J. Veverka, P. Thomas, P. Helfenstein, D. Simonelli, C. Chapman, M. E. Davies, R. Greeley, R. Greenberg, et al. (1992)
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Asteroids: Surface Composition from Reflection Spectroscopy.
T. B. McCord, T. B. McCord, and M. J. Gaffey (1974)
Science 186, 352-355
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Alteration of Lunar Optical Properties: Age and Composition Effects.
J. B. Adams, J. B. Adams, and T. B. McCord (1971)
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Lunar Spectral Reflectivity (0.30 to 2.50 Microns) and Implications for Remote Mineralogical Analysis.
T. B. McCord, T. B. McCord, and T. V. Johnson (1970)
Science 169, 855-858
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Asteroid Vesta: Spectral Reflectivity and Compositional Implications.
T. B. McCord, T. B. McCord, J. B. Adams, and T. V. Johnson (1970)
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Spectral Reflectivity of Lunar Samples.
J. B. Adams, J. B. Adams, and R. L. Jones (1970)
Science 167, 737-739
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Chemical Composition of the Lunar Surface in Sinus Medii.
E. J. Franzgrote, E. J. Franzgrote, J. H. Patterson, A. L. Turkevich, T. E. Economou, and K. P. Sowinski (1970)
Science 167, 376-379
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Lunar Thermal Anomalies: Magnetic Phase Transitions on the Lunar Surface?.
D. R. Waldbaum and D. R. Waldbaum (1969)
Science 166, 531-532
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Moon: Infrared Studies of Surface Composition.
D. P. Cruikshank and D. P. Cruikshank (1969)
Science 166, 215-218
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Preliminary Examination of Lunar Samples from Apollo 11.
(1969)
Science 165, 1211-1227
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Spectral Reflectivity of Mars.
T. B. Mccord, T. B. McCord, and J. B. Adams (1969)
Science 163, 1058-1060
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Martian Surface Materials: Effect of Particle Size on Spectral Behavior.
J. W. Salisbury, J. W. Salisbury, and G. R. Hunt (1968)
Science 161, 365-366
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