Abstract: Journal of Geophysical Research (1896-1977)Volume 77, Issue 8 p. 1349-1359 Lunar spectral types Thomas B. McCord, Thomas B. McCordSearch for more papers by this authorMichael P. Charette, Michael P. CharetteSearch for more papers by this authorTorrence V. Johnson, Torrence V. JohnsonSearch for more papers by this authorLarry A. Lebofsky, Larry A. LebofskySearch for more papers by this authorCarle Pieters, Carle PietersSearch for more papers by this authorJohn B. Adams, John B. AdamsSearch for more papers by this author Thomas B. McCord, Thomas B. McCordSearch for more papers by this authorMichael P. Charette, Michael P. CharetteSearch for more papers by this authorTorrence V. Johnson, Torrence V. JohnsonSearch for more papers by this authorLarry A. Lebofsky, Larry A. LebofskySearch for more papers by this authorCarle Pieters, Carle PietersSearch for more papers by this authorJohn B. Adams, John B. AdamsSearch for more papers by this author First published: 10 March 1972 https://doi.org/10.1029/JB077i008p01349Citations: 113AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract The spectral reflectance properties (0.3–1.1 μ) of a number of lunar mare, upland, and bright crater areas were observed with the use of ground-based telescopes. These new data are discussed in view of earlier studies in an attempt to provide a basis for more detailed interpretation. The spectral reflectivity curves (0.3–1.1 μ) for all lunar areas studied consist of a positive sloping continuum with a superimposed symmetric absorption band centered at 0.95 μ. Upland, mare, and bright crater materials can be identified by their spectral curves. The curves for upland and mare regions show a range of shapes from fresh, bright craters to progressively darker background material that correlates with the apparent age of the surface features. The observed upland material has uniform spectral properties, but the mare material shows some variety, probably due to Ti3+ dispersed in lunar-soil glass. Copernicus and Aristarchus appear to have exposed upland material from beneath the mare but Kepler has not. This observation suggests that the mare is no deeper than about 15 km in the Copernicus area and about 6 km deep in the Aristarchus area, but in the Kepler area the mare must be at least about 5 km deep. References Adams, J. B., Lunar and Martian surfaces: Petrologic significance of absorption bands in the near-infrared, Science, 159, 1453, 1968. Adams, J. B., A. L. Filice, Spectral reflectance 0.4 to 2.0 μ of silicate rock powders, J. Geophys. Res., 72, 5705, 1967. Adams, J. B., R. L. Jones, Spectral reflectivity of lunar samples, Science, 167, 737, 1970. Adams, J. B., T. B. McCord, Remote sensing of lunar surface mineralogy implications from visible and near-infrared reflectivity of Apollo 11 samples, Geochim. Cosmochim. ActaSuppl. 1, 1937, 1970. Adams, J. B., T. B. McCord, Alteration of lunar optical properties; Age and composition effects, Science, 171, 567, 1971a. Adams, J. B., T. B. McCord, Optical properties of mineral separates, glass, and anorthositic fragments from Apollo mare samples, Geochim. Cosmochim. Acta, 1971b. Burns, R. G., Mineralogical Applications of Crystal Field Theory, Cambridge University Press, London, 1970. Conel, J. E., Coloring of synthetic and natural lunar glass by titanium and iron, Jet Propulsion Laboratory Space Program Summary, 3, 26–31, 1970. Conel, J. E., D. B. Nash, Spectral reflectance and albedo of Apollo 11 lunar samples: Effects of irradiation and vitrification and comparison with telescopic observations, Geochim. Cosmochim. Acta.Suppl. 1, 2013, 1970. Cruikshank, D. P., Moon: Infrared studies of surface composition, Science, 166, 215, 1969. Goetz, A. F. H., F. Billingsly, E. Yost, T. B. McCord, Apollo 12 multispectral photography experiment, Apollo 12 Preliminary Science ReportNASA SP-235, 103, 1971. Labs, D., H. Neckel, The radiation of the solar photosphere from 2000 A to 100μ, Z. Astrophys., 69, 1, 1968. McCord, T. B., Color differences on the lunar surface, Ph.D. dissertation,Calif. Inst. of Technol.,Pasadena,1968a. McCord, T. B., A double-beam astronomical photometer, Appl. Opt., 7, 475, 1968b. McCord, T. B., Color differences on the lunar surface, J. Geophys. Res., 74, 3131, 1969a. McCord, T. B., Time dependence of lunar differential color, Astron. J., 74, 273, 1969b. McCord, T. B., T. V. Johnson, Relative spectral reflectivity 0.4–1 μ of selected areas of the lunar surface, J. Geophys. Res., 74, 4395, 1969. McCord, T. B., T. V. Johnson, Lunar spectral reflectivity (0.3 to 2.50 μ) and implications for remote mineralogical analysis, Science, 169, 855, 1970. McCord, T. B., J. A. Westphal, Mars: Narrowband photometry, from 0.3 to 2.5 μ, of surface regions during the 1969 apparition, Astrophys. J., 30, 40, 1971. McCord, T. B., M. P. Charette, T. V. Johnson, L. A. Lebofsky, C. Pieters, Spectrophotometry (0.3 to. 1.1 μ) of visited and proposed Apollo lunar landing sites, final reportNASA grant NGR-22-009496, 1971. Oke, J. B., Photoelectric spectrophotometry of stars suitable for standards, Astrophys. J., 140, 689, 1964. Oke, J. B., R. Schild, The absolute spectral energy distribution of Alpha Lyrae, Astrophys. J., 161, 1015, 1970. Pohn, H. A., R. L. Wildey, A Photographic Study of the Normal Albedo of the Moon, U.S. Government Printing Office, Washington, D.C., 1970. Soderblom, L. A., The distribution and ages of regional lithologues in the lunar maria, Ph.D. dissertation,Calif. Inst. of Technol.,Pasadena,1970. Whittaker, E., in Interpretation of Ranger VII records by G. P. Kuiper,, Commun., 58, pp. 4 and18,Lunar and Planet. Lab., Univ. of Arizona,4,Tucson,1966. Citing Literature Volume77, Issue810 March 1972Pages 1349-1359 ReferencesRelatedInformation
Publication Year: 1972
Publication Date: 1972-03-10
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 123
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