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Browsing LPI Contributions by Title

Browsing LPI Contributions by Title

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  • Ion probe analysis of artificially implanted ions in terrestrial samples and surface enhanced ions in lunar sample 76215,77 
    Zinner, E.; Walker, R. M.; Chaumont, J.; Dran, J. C. (Pergamon Press, 1976)
    We used the ARL ion probe at the JSC to measure concentration depth profiles of artificially implanted ions in terrestrial minerals and of natural elements on the surface of a recently exposed lunar plagioclase crystal.
  • Ion probe surface concentration measurements of Mg and Fe and microcraters in crystals from lunar rock and soil samples 
    Zinner, E.; Walker, R. M.; Chaumont, J.; Dran, J. C. (Pergamon Press, 1977)
    Measurements of solar wind implanted ions and microcraters on the surface of lunar rock crystals and soil grains allow the study of solar activity and the interplanetary environment and their possible changes in the past. ...
  • Ion-probe studies of artificially implanted ions in lunar samples 
    Zinner, E.; Walker, R. M. (Pergamon Press, 1975)
    The ion microprobe at the Johnson Space Center was used to study depth profiles of artificially implanted ions in lunar samples. Five polished sections of typical mare basalts (12040 and 12018) were irradiated with nine ...
  • Iridium and Trace Element Measurements from the Cretaceous-Tertiary Boundary, Site 752, Broken Ridge, Indian Ocean 
    Schuraytz, B. C.; O'Connell, S.; Sharpton, Virgil L. (Ocean Drilling Program, 1991)
    Fourteen samples spanning a 2.5 m interval that includes the Cretaceous-Tertiary (K/T) boundary from Hole 752B near the crest of Broken Ridge in the eastern Indian Ocean, were studied in order to search for anomalous ...
  • Iron-rich Clay Minerals on Mars: Potential Sources or Sinks for Hydrogen and Indicators of Hydrogen Loss over Time 
    Burt, Donald M. (Lunar and Planetary Institute, 1989)
    Although direct evidence is lacking, indirect evidence suggests that iron-rich clay minerals or poorly ordered chemical equivalents ("palagonite") are widespread on the martian surface. Such clays (or other Fe and OH-bearing ...
  • Is a resource-Mars a stepping-stone to human exploration of the solar system? 
    Max, Michael D.; Clifford, Stephen Mark, 1952-; Johnson, Arthur H.; Lasue, Jeremie; https://orcid.org/0000-0001-9082-4457; https://orcid.org/0000-0003-0771-1713 (2009)
    The question is no longer "does Mars have resources?", but rather, "how do we assess and exploit these natural resources?", and "how will they affect the human exploration of Mars and beyond?" We now have the ability to ...
  • The isotopic composition of volatiles in the unique Bench Crater carbonaceous chondrite impactor found in the Apollo 12 regolith 
    Joy, J. H.; https://orcid.org/0000-0003-4992-8750; Tartèse, Romain; Messenger, Scott R.; Zolensky, M. E. (Michael E.); https://orcid.org/0000-0002-3181-1303; Marrocchi, Y.; Frank, D. R.; Kring, David A. (David Allen); https://orcid.org/0000-0002-3440-6282 (Elsevier, 2020-06-15)
    Projectiles striking the Moon have modified its crust and delivered volatile elements to its interior and surface. Direct evidence of impactor origins is recorded by the rare occurrence of sub-cm sized meteorite fragments ...
  • It's a dry heat, the geology of Venus from Magellan 
    Price, Maribeth Hughett; Herrick, Robert R. (Lunar and Planetary Institute, 1997)
    An overview of the radar imagery, altimetry, and gravity data collected by the Magellan Mission to Venus.
  • Joint annual meeting of LEAG-ICEUM-SRR : October 28-31, 2008, Cape Canaveral, Florida 
    Neal, Clive R.; https://orcid.org/0000-0003-0705-3490; Mackwell, Stephen J.; https://orcid.org/0000-0002-0996-1348; Foing, B. H. (Bernard H.); Gertsch, Leslie S.; https://orcid.org/0000-0002-6020-1889 (Lunar and Planetary Institute, 2008)
    This CD-ROM contains the contents, program, abstracts, and author indexes for the Joint Annual Meeting of LEAG-ICEUM-SRR.
  • K/ Ar dating of lunar soils II 
    Alexander, E. Calvin; Bates, A.; Coscio, M. R., Jr.; Dragon, J. C.; Murthy , V. R.; Pepin, R. O. (Robert Osborne), 1933-; Venkatesan, T. R. (Pergamon Press, 1976)
    target element concentrations in grain-sized separates of 12033, 15531, 67701, 71501 and 7 5081 to deduce K/Ar ages, exposure ages, and isotopic compositions of surface correlated argon components.
  • K/Ar dating of lunar soils III: Comparison of 39Ar-40Ar and conventional techniques: 12032 and the age of Copernicus 
    Alexander, E. Calvin; Coscio, M. R., Jr.; Dragon, J. C.; Pepin, R. O. (Robert Osborne), 1933-; Saito, K. (Pergamon Press, 1977)
    We have previously reported conventual K, Ca, and Ar analyses for grain-sized separates of 12033,42; 15531,42; and 67701,22 (Alexander et al., 1976) and Ar and Ca analyses for grain-sized separates of 70181,30 (Pepin et ...
  • Laboratory Studies in Support of Venus Exploration: Surface and Near-Surface 
    Treiman, Allan H.; McCanta, Molly; Filiberto, Justin; https://orcid.org/0000-0001-5058-1905; https://orcid.org/0000-0002-8073-2839 (2020)
    Laboratory experiments are crucial adjuncts to NASA's spacecraft exploration program, because spacecraft observations and data commonly can only be understood by comparison with controlled studies of analog materials in ...
  • Large Meteorite Impacts and Planetary Evolution IV : August 17-21, 2008, Vredefort Dome, South Africa 
    Cockell, Charles; Gibson, Roger L. (Roger Lawrence), 1963-; Reimold, W. U. (Lunar and Planetary Institute, 2008)
    Topics include: Drilling of Impact Structures; Extraterrestrial Cratering; Impact Ejecta; Terrestrial Craters; Modeling Impact Cratering; Drilling at Impact Craters - ICDP and Other Projects; Large Impacts; Structural ...
  • Large Meteorite Impacts and Planetary Evolution V : August 5-8, 2013, Sudbury, Canada 
    Kring, David A. (David Allen); https://orcid.org/0000-0002-3440-6282; Osinski, Gordon R.; https://orcid.org/0000-0002-1832-5925; Riller, Ulrich; https://orcid.org/0000-0002-3803-6792 (Lunar and Planetary Institute, 2013)
    Since LMI IV, several major international drilling and field projects of terrestrial impact structures, as well as new spacecraft missions to the Moon, neighboring planets, asteroids, and comets, have begun to deliver ...
  • Large Meteorite Impacts and Planetary Evolution VI : September 30–October 3, 2019, Brasília, Brazil 
    Reimold, W. U. (Lunar and Planetary Institute, 2019)
    In recent years, several major international drilling and field projects on terrestrial impact structures, as well as new spacecraft missions to the Moon, neighboring planets, asteroids, and comets, have delivered important ...
  • Late Mars Workshop : October 1-2, 2018, Houston, Texas 
    Soare, Richard J.; Clifford, Stephen Mark, 1952-; Conway, Susan J.; https://orcid.org/0000-0002-0577-2312; Garvin, James B.; https://orcid.org/0000-0003-1606-5645; Hauber, Ernst; https://orcid.org/0000-0002-1375-304X; https://orcid.org/0000-0003-0771-1713 (Lunar and Planetary Institute, 2018)
    This first Late Mars Workshop will be a discursive platform for the exchange of ideas, observations, and hypotheses among planetary scientists keen to explore and explain the recent evolution of the martian landscape. This ...
  • Life and Death in the Chicxulub Impact Crater: A Record of the Paleocene–Eocene Thermal Maximum 
    Smith, Vann; Warny, Sophie; Grice, Kliti; Schaefer, Bettina; Whalen, Michael T.; Vellekoop, Johan; Chenot, Elise; Gulick, Sean P. S.; Arenillas, Ignacio; Arz, Jose A.; Bauersachs, Thorsten; Bralower, Timothy J.; Demory, François; Gattacceca, Jérôme; Jones, Heather L.; Lofi, Johanna; Lowery, Christopher M.; Morgan, Joanna V.; Nuñez Otaño, Noelia B.; O'Keefe, Jennifer M. K.; O'Malley, Katherine; Rodríguez-Tovar, Francisco J.; Schwark, Lorenz; IODP-ICDP Expedition 364 Scientists (EGU Publications, 2020-10-19)
    Here, we present a new record of the Paleocene–Eocene Thermal Maximum (PETM) from the peak ring of the Chicxulub impact crater that has been identified based on nannofossil biostratigraphy, an acme of the dinoflagellate ...
  • Lithification of vitric - and clastic-matrix breccias: SEM petrography 
    Phinney, William C.; Simonds, Charles H.; McKay, David S.; Warner, Jeffrey L. (Pergamon Press, 1976)
    Matrix textures of 41 lunar breccias ranging from very friable soil clods through coherent microbreccias and tough vitric breccias to tough, fine-grained crystalline breccias were examined petrographically by means of the ...
  • lntracrystalline cation order in a lunar crustal troctolite 
    Smyth, J. R. (Pergamon Press, 1975)
    Lunar rock 76535 appears to be one of the most slowly cooled bits of silicate material yet studied. The crystal structures of its three major phases, anorthite, olivine, and bronzite have been refined from three-dimensional ...
  • Long-term differential energy spectrum for solar-flare iron-group particles 
    Blanford, G. E.; Fruland, Ruth M.; Morrison, Donald A. (Pergamon Press, 1975)
    Track density profile measurements in sample 64455 and sample 68815 have been used to derive a long-term solar-flare differential energy spectrum for iron-group (20 ~ Z ~ 26) nuclei from --0.1 to --600 MeV/a.m.u.

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