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WORKSHOP ON NEW VIEWS OF THE MOON II: UNDERSTANDING THE MOON THROUGH THE INTEGRATION OF DIVERSE DATASETS SEPTEMBER 22-24, 1999 FLAGSTAFF, ARIZONA WORKSHOP ON NEW VIEWS OF THE MOON II: UNDERSTANDING THE MOON THROUGH THE INTEGRATION OF DIVERSE DATASETS Flagstaff,Arizona September 22-24, 1999 Conveners Lisa Gaddis and CharlesK. Shearer Sponsored by Lunar andPlanetary Institute Museum of NorthernArizona National Aeronautics and Space Administration U.S. Geological Survey, Flagstaff Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 LPI ContributionNo. 980 Compiled in 1999 by LUNAR ANDPLANETARY INSTITUTE The Institute is operated by the Universities Space Research Association under Contract No. NASW- 4574 with the National Aeronautics and Space Administration. Material in this volume may be copied without restraint forlibrary, abstract service, education, or personal researchpurposes; however, republication of any paper or portion thereof requires the written permission of the authors as well as the appropriate acknowledgment of this publication. Abstracts in this volume may be cited as Author A. B. and Author C. D. (1999) Title of Abstract. In Workshop on New Views of the Moon II: Understanding the Moon Throughout the Integration of Diverse Datasets. LPI Contribution No. 980, Lunar and Planetary Institute, Houston. This volume is distributed by ORDER DEPARTMENT Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113, USA Phone: 281-486-2172 Fax: 281-486-2186 E-mail: [email protected] Mail order requestors will be invoiced for the cost of shipping and handling. LP] Contribution No. 980 iii Preface • This volume contains abstracts that have been accepted for presentation at the Workshop on New Views of the Moon II: Understanding the Moon Through the Integration of Diverse Datasets, September 22-24, 1999, in Flagstaff, Arizona. The workshop conveners are Lisa Gaddis (U.S. Geological Survey, Flagstaff) and Charles K. Shearer (University of New Mexico). Color versions of some of the images contained in this volume are available on the meeting Web site (http://cass.jsc.nasa.gov/meetings/moon99/ pdf/program. pdf). Logistics, administration, and publications support for this meeting were provided by the staffof the Publications and Program Services Department at the Lunar and Planetary Institute. LP/ Contribution No. 980 V Contents Prospecting forLunar Resources with Global Geochemical and Multispectral Data C. C. Allen ...................................................................................................................................... I Photometric Imaging of the Moon fromthe Robotic Lunar Observatory J. M. Anderson and H. H. Kieffer .................................................................................................. 2 The Lunar Crustal Thickness fromAnalysis of the Lunar Prospector Gravity and Clementine Topography Datasets S. Asmar, G. Schubert, A. Konopliv, and W. Moore ....................................................................... 3 Three Paradigms of Lunar Regolith Evolution A. Basu, D. S. McKay, and S. J. Wentworth.................................. ................................................. 4 Lunar Global Petrologic Variations D. B. J. Bussey, P. D. Spudis, and J. J. Gillis ................................................................................. 5 Integrationof the Ultraviolet-Visible Spectral Clementine Data and the Gamma-Ray Lunar Prospector Data: Preliminary Results ConcerningFeO, Ti 02, and Th Abundances of the Lunar Surface at Global Scale S. D. Chevrel, P. C. Pinet, G. Barreau, Y. Daydou, G. Richard, S. Maurice, and W. C. Feldman ................................................................................................................................ 6 The Distribution of Titanium in Lunar Soils on the Basis of Sensor and In Situ Data Fusion P. E. Clark and L. Evans ................................................................................................................ 7 Digital Elevation Models of the Lunar Surface A. C. Cook and M. S. Robinson ..................................................................................................... 8 Simulating the Formation of Lunar Floor-Fracture Craters Using Elastoviscoplastic Relaxation A. J. Dombard and J. J. Gillis ................................................................ :....... : ............................... IO Sample ReturnMission to the South Pole Aitken Basin M. B. Duke, B. C. Clark, T. Gamber, P. G. Lucey, G. Ryder, and G. J. Taylor .............................. 11 Subpixel Detection of Pyroclastic Materials in Clementine Ultraviolet-Visible Data W. H. Farrand and L. R. Gaddis .................................................................................................... 12 Enhanced Hydrogen Abundances Near Both Lunar Poles W. C. Feldman, S. Maurice, D. J. Lawrence, I. Getenay, R. C. Elphic, B. L. Barraclough, and A. B. Binder.................. ........................................................................................................... 14 Laser Argon-40-Argon-39Age Studies of DarAl Gani 262 Lunar Meteorite V. A. Fernandes, R. Burgess, and G. Turner......................................... ......................................... 15 vi Workhop on New Views of the Mon I Progress Toward Characterization of Juvenile Materials in Lunar Pyroclastic Deposits L. R. Gaddis ................................................................................................................................... 16 Lateral and Vertical Heterogeneity of Thorium in the Procellarum KREEPTe rrane: As Reflected in the Ejecta Deposits of Post-Imbrium Craters J. J. Gillis and B. L. Jolliff...................... ....................................................................................... 18 The Optical Maturity of Ejecta fromLarge Rayed Craters: Preliminary Results and Implications J. A. Grier,A. S. McEwen, PG. Lucey, M. Milazw, and R. G. Strom ........................................... 19 The Lunar Imager/SpectroMeter for the SELENE Mission J. Haruyama, H. Otake, T. Matsunaga, and the LISM Working Group ......................................... 21 The Composition and Origin of Selected Lunar Crater Rays B. R. Hawke, D. T. Blewett, P G. Lucey, C. A. Peterson, J. F. Bell III, B. A. Campbell, and M. S. Robinson ........................................................................................................................ 22 Lunar Gruithuisen and Mairan Domes: Rheology and Mode of Emplacement J. W Head and L. Wilson ............................................................................................................... 23 A Multispectral Analysis of the FlamsteedRegion of Oceanus Procellarum D. J. Heather, S. K. Dunkin, P D. Spudis, and D. B. J. Bussey ..................................................... 24 Petrogenesis of Magnesian-Suite Troctolites and Norites P C. Hess and E. M. Parmentier ................................................................................................... 26 Ages of Oceanus Procellarum Basalts and Other Nearside Mare Basalts H. Riesinger and J. W Head Ill.............................. ....................................................................... 27 High-Resolution Mapping of Lunar Crustal Magnetic Fields: Correlationswith Albedo Markings of the Reiner Gamma Class L. L. Hood, A. Yingst, D. L. Mitchell, R. P Lin, M. Acuna, and A. B. Binder ................................ 28 Solar-Wind-ImplantedVolatiles in the Lunar Regolith J. R. Johnson, T. D. Swindle, and P G. Lucey ............................................................................... 29 Thorium Enrichment Within the Procellarum KREEPTe rrane: The Record in Surf ace Deposits and Significancefor Thermal Evolution B. L. Jolliff, J. J. Gillis, and L.A. Haskin ...................................................................................... 31 Space Weathering in the Fine Size Fractions of Lunar Soils: Soil Maturity Effects L. P Keller, S. J. Wentworth, D. S. McKay, L. A. Taylor, C. Pieters, and R. V.Morris .................. 32 The Deepest Lunar SPA Basin and Its Unusual Infilling: Constraints Imposed by Angular Momentum Considerations G. G. Kochemasov ......................................................................................................................... 34 LP/ Contribution No. 980 vii North-Polar Lunar Light Plains: Ages and Compositional Observations U. Koehler,J. W. Head Ill., G. Neukum, and U. Wolf.................................................................... 34 Lunar Meteorites and Implications for Compositional Remote Sensing of the Lunar Surface R. L. Korotev ................................................................... :.............................................................. 36 Iron Abundances on the Moon as Seen by the Lunar Prospector Gamma-Ray Spectrometer D. J. Lawrence, W. C. Feldman, B. L. Barraclough, R. C. Elphic, S. Maurice, A. B. Binder, and P. G. Lucey ..................................................................................................................................... 38 DiscriminationBetween Maturity and Composition from Integrated Clementine Ultraviolet-Visibleand Near-InfraredData S. Le Mouelic, Y. Langevin, S. Erard, P. Pinet, Y. Daydou, and S. Chev rel................................... 39 Topographic-Compositional Relationships Within South Pole Aitken Basin P. G. Lucey, J. Boltzmann, D. T. Blewett, G. J. Taylor, and B. R.
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