USRA Houston Repository

Browsing by Subject "Regolith"

Browsing by Subject "Regolith"

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  • Warner, Jeffrey L.; Simonds, Charles H.; McGee, Patricia E.; Cochran , A. (Pergamon Press, 1978)
    Petrologic investigations of six samples of Luna 24 soil suggest: 1. Potassium, and by inference all lithophile trace elements, are depleted in the surficial rocks of the moon's eastern limb relative to the moon's central ...
  • Mitchell, James K. (James Kenneth), 1930-; Goodman, Richard E.; Houston, William N.; Witherspoon, P. A., Jr. (Paul Adams), 1919-2012 (University of California, Berkeley, Geotechnical Engineering, 1969-02-20)
    The objectives of the research under this contract are to define geological and engineering problems associated with lunar exploration that depend on the knowledge of the mechanical properties of soil and rock for solution ...
  • Pearce, G. W.; Strangway, D. W.; Gose, W. A. (Pergamon Press, 1974)
    The magnetic properties of a number of Apollo 17 samples have been measured and confirm that regoliths of mare sites (Apollo 11, 12, 15 valley, and 17 valley) differ markedly from those of highland sites (Apollo 14, 16, ...
  • Blanchard, Douglas P.; Brannon, Joyce C.; Aaboe, Erik; Budahn, James R. (Pergamon Press, 1978)
    We have analyzed 6 Luna 24 soils for major and trace elements by atomic absorption spectrophotometry (AAS) and instrumental neutron activation analysis (INAA). We have also analyzed size fractions (90-150 μm and <20 μm) ...
  • Reid, Arch M.; Warner, Jeffrey L.; Ridley, W. I.; Johnston, Dennis A.; Harmon, Russell S.; Jakeš, Petr; Brown, Roy W. (Pergamon Press, 1972)
    Data on the major element composition of glasses in Apollo 11, 12, and 14 and Luna 16 soils have been classified into groupings of preferred compositions by cluster analysis techniques. These preferred compositions are ...
  • Basu, Abhijit; McKay, David S.; Fruland, Ruth M. (Pergamon Press, 1978)
    We have analyzed 6 Luna 24 soils for major and trace elements by We have performed detailed petrographic modal analyses of polished grain mounts of four sieve fractions in the size range of 20 μm to 250 μm for each of the ...
  • Joy, Katherine H.; https://orcid.org/0000-0003-4992-8750; Snape, J. F.; Nemchin, A. A.; Tartèse, Romain; Martin, D. M.; Whitehouse, Martin J.; Vishnyakov, V.; Pernet-Fisher, J. F.; Kring, David A. (David Allen) (Royal Society, 2020)
    Apollo 16 soil-like regolith breccia 65745,7 contains two zircon-bearing clasts. One of these clasts is a thermally annealed silica-rich rock, which mineralogically has affinities with the High Alkali Suite (Clast 1), and ...

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