USRA Houston Repository

Browsing LPI Contributions by Subject "Regolith"

Browsing LPI Contributions by Subject "Regolith"

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  • Luna 24: Lateral heterogeneity in the lunar crust 
    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 ...
  • Magnetic properties of Apollo samples and implications for regolith formation 
    Pearce, G. W.; Strangway, David 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, ...
  • Major and trace element chemistry of Luna 24 samples from Mare Crisium 
    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) ...
  • The major element compositions of lunar rocks as inferred from glass compositions in the lunar soils 
    Reid, Arch M.; Warner, Jeffrey L.; Ridley, W. I.; Johnston, Dennis A.; Harmon, R. S. (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 ...
  • Origin and modal petrography of Luna 24 soils 
    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 ...
  • Timing of geological events in the lunar highlands recorded in shocked zircon-bearing clasts from Apollo 16 
    Joy, Katherine H.; https://orcid.org/0000-0003-4992-8750; Snape, J. F.; Nemchin, A. A.; Tartèse, Romain; Martin, D. M.; Whitehouse, M. J. (Martin J.); Vishnyakov, V.; Pernet-Fisher, J. F.; Kring, David A. (David Allen); https://orcid.org/0000-0002-3440-6282 (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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