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Meteoritical Society 54Th Annual Meeting, Monterey, California, July METEORITICAL S·O·C·I·E·T·Y 54th ANNUAL MEETING Monterey, California, July 21-26, 1991 METEORITICAL S·O·C·I·E·T·Y 54th ANNUAL MEETING Monterey, California, July 21-26, 1991 PUBLIC SPONSORS CORPORATE SPONSORS San Jose State University Fisons Instruments Lunar and Planetary Institute CAMECA Instruments California Institute of Technology Charles Evans & Associates University of California at Berkeley Lawrence Livermore National Laboratory SPECIAL SPONSORS Institute of Geophysics and Planetary Physics Barringer Crater Company Center for Accelerator Mass Spectrometry Nuclear Chemistry Division OfHER SPONSORS NASA Exobiology Program Perkin Elmer Division of Planetary Sciences, AAS Fenestra Winery Commission on Comparative Planetology, IUGS California State University, Fullerton iii ORGANIZING COMMITTEE Members of the Organizing Committee were Edward Anders (Ex Officio; University of Chicago), T. E. Bunch (NASA Ames Research Center), Donald Burnett (California Institute of Technology), Mark Caffee (Lawrence Livermore National Laboratory), Patrick Cassen (NASA Ames Research Center), Sherwood Chang (NASA Ames Research Center), Peter Englert (Chair; San Jose State University), Sidney Niemeyer (Lawrence Livermore National Laboratory), Filippo Radicati di Brozolo (Charles Evans & Associates), John Reynolds (University of California at Berkeley), Gerald Wasserburg (California Institute of Technology), and Dorothy Woolum (California State University, Fullerton). PROGRAM COMMITTEE Members of the Program Committee were Daniel Britt (University of Arizona), Donald Burnett (Chair; California Institute of Technology), Mark Caffee (Lawrence Livermore National Laboratory), Patrick Cassen (NASA Ames Research Center), Sherwood Chang (NASA Ames Research Center), Peter Englert (San Jose State University), Julie Paque (Stanford University), John Reynolds (University of California at Berkeley), Ann Vickery (University of Arizona), and Dorothy Woolum (California State University, Fullerton). STUDENT GRANTS Sponsorship by the Barringer Crater Company is primarily responsible for the grants provided to selected students to support their attendance at this meeting. The following students are recipients of these grants: S. Bajt, Max Planck Institut fiir Kernphysik J. L. Bishop, Brown University K. Bremer, Universitat zu Koln I. Casanova, NASA Johnson Space Center C. Floss, Washington University R. P. Harvey, University of Tennessee M. L. Hutson, University of Arizona H. Kagi, University of Tokyo F. Langenhorst, Institut fiir Planetologie Y. T. Lin, Academia Sinica K. Lodders, Max Planck Institut fiir Chemie J. Lu, University of Arkansas T. J. McCoy, University of Hawaii N. Nakamura, Kobe University T. Presper, Max Planck Institut fiir Chemie S. S. Russell, Open University R. Ruzicka, University of Arizona G. Schmidt, Max Planck Institut fiir Kernphysik A. Verchovsky, Max Planck Institut fiir Chemie M. K. Weisberg, American Museum of Natural History/Brooklyn College, CUNY K. C. Welten, University of Utrecht iv SPECIAL NOTES Afternoon sessions on Monday and Tuesday start at 1:15 p.m. All other afternoon sessions begin at 1:30. Poster titles are listed with the individual sess1ons. All poster presentations are on Monday and Tuesday afternoons from 4:00-6:00 p.m. v MEETING CALENDAR Sunday, July 21, 1991 Noon 12:00 Doub1etree Hotel Meteoritical Society Council Meeting PM 12-6:00 Doubletree Hotel Registration (The registration desk will be staffed from 8:00a.m.- 5:00p.m. Monday through Thursday and from 8:00a.m. through noon Friday) 6:00 Memory Gardens Welcome Party- Refreshments sponsored by Fisons Instruments Monday, July 22, 1991 AM 8:30 Room A Antarctic Meteorites 10:30 Room A Nebula and Parent Body Processing I 8:30 RoomB Primary and Secondary SNC Parent Planet Processes Noon 12:00 Doubletree Hotel Nomenclature Committee Meeting PM 1:15 Room A Nebula and Parent Body Processes I (continued) 1:15 RoomB Enstatite Chondrites and Aubrites 4-6:00 Roome Poster Session I - Refreshments sponsored by CAMECA Instruments Poster presentations associated with the following sessions are scheduled for display (sessions Mon. - Wed. noon): Antarctic Meteorites Nebula and Parent Body Processing I Primary and Secondary SNC Parent Planet Processes Nebula and Parent Body Processes I (continued) Enstatite Chondrites and Aubrites Nebula and Parent Body Processing II Achondrite Stew Refractory Inclusions Meteorite Exposure Ages and Sizes vi Poster Session I (continued) Interstellar I Meteorite Connections I Interstellar1 Meteorite Connections II Lunar Origins, Processes and Meteorites Tuesday, July 23, 1991 AM 8:30 Room A Nebula and Parent Body Processing II 8:30 RoomB Achondrite Stew Noon 12:00 Doubletree Hotel Editorial Committee Meeting PM 1:15 Room A Refractory Inclusions 1:15 RoomB Meteorite Exposure Ages and Sizes 4-6:00 Roome Poster Session II - Refreshments sponsored by Charles Evans & Associates Poster presentations associated with the following sessions are scheduled for display (sessions Wed. noon- Fri.): Interstellar I Meteorite Connections I Interstellar I Meteorite Connections II Lunar Origins, Processes and Meteorites Interstellar I Meteorite Connections II (continued) Craters, Cratering and Tektites Cretaceous-Tertiary Impact(s) IDPs: LDEF, Stratosphere, Greenland and Antarctica Chondrules Ordinary Chondrites Iron Meteorites S Asteroids Are Not Ordinary Chondrites? Carbonaceous Chondrites EVE 8:00 RoomB Steinbeck Lecture Wednesday, July 24, 1991 AM 8:30 Room A Interstellar I Meteorite Connections I. Organics and Ices 10:45 Room A Interstellar I Meteorite Connections II. Diamonds, SiC and Related Anomalies vii 8:30 RoomB Lunar Origins, Processes and Meteorites Noon 12:00 Room A Meteoritical Society Business Meeting PM 1:30 Room A Interstellar f Meteorite Connections (continued) II. Diamonds, SiC and Related Anomalies 1:30 RoomB Craters, Cratering and Tektites EVE 8:00 Room A Cretaceous-Tertiary Impact(s) Thursday, July 25,1991 AM 8:30 Room A IDPs: LDEF, Stratosphere, Greenland and Antarctica 8:30 RoomB Chondrules PM 1:30 Room A Plenary Session - Medal Winner Presentations 2:45 Room A Ordinary Chondrites 2:45 RoomB Iron Meteorites EVE 7:00 Monterey Bay Annual Dinner Aquarium Friday, July 26, 1991 AM 8:30 Room A S Asteroids Are Not Ordinary Chondrites? 8:30 RoomB Carbonaceous Chondrites PROGRAM * Indicates Speaker Monday, July 22, 1991 ANTARCTIC METEORITES 8:30 a.m. Room A Chairmen: T.Bunch R. C. Reedy 8:30-8:45 Nishiizumi K.* Sharma P. Kubik P. W. Amo1dJ. R. 36 Cl Terrestrial Ages of Antarctic Meteorites 8:45-9:00 Wacker J. F.* Cosmogenic 26 AI Activities in Antarctic and Non-Antarctic Meteorites 9:00-9:15 Benoit P. H.* Sears H. Sears D. W. G. Thermoluminescence of Meteorites from the Lewis Cliff: Ice Movements, Pairing, Orbit, and Antarctic/ Non-Antarctic Comparisons 9:15-9:30 Bishop J. L.* Pieters C. M. Mid-IR Spectroscopy of Antarctic Consortium Meteorites: B-7904, Y-82162 and Y-86720 9:30-9:45 Bremer K. * Herpers U. Delisle G. Hofle H. C. van de Wateren D. W. Hofmann H. J. WOlfli W. 10 Be Content of Quartz Grains Collected in North Victoria Land and the Glacial History of the Frontier Mountain Range in Antarctica 9:45-10:00 Delisle G.* Global Change, the East Antarctic Ice Budget and the Evolution of the Frontier Mountains Meteorite Trap, North Victoria Land, Antarctica 10:00-10:15 Wolf S. F. * Lipschutz M. E. Labile Trace Element Comparisons in H Chondrites from Victoria Land and Queen Maud Land: A Progress Report 10:15-10:30 COFFEE BREAK 2 POSTER PRESENTATIONS TO BE FEATURED MONDAY IN POSTER SESSION I 4:00-6:00 p.m. Room C Harvey R. P. Score R. Direct Evidence of In-Ice or Pre-Ice Weathering of Antarctic Meteorites Benoit P. H. Sears H. Sears D. W. G. Ice Movement, Pairing and Meteorite Showers of Ordinary Chondrites from the Allan Hills Pieters C. M. Britt D. Bishop J. VIS/ Near IR Reflectance Spectra of CI/ CM Antarctic Consortium Meteorites: B7904, Y82162, Y86720 3 Monday, July 22, 1991 NEBULA AND PARENT BODY PROCESSING I 10:30 a.m. Room A Chairman: D. Woolum 10:30-11:00 Sargent A.* Beckwith S. Observational Evidence for Proto-planetary Disks 11:00-11:30 Cassen P.* A Guide to the Use of Theoretical Models of the Solar Nebula for the Interpretation of the Meteoritic Record 4 Monday, July 22, 1991 PRIMARY AND SECONDARY SNC PARENT PLANET PROCESSES 8:30 a.m. Room B Chairmen: G. McKay H. Y. McSween Jr. 8:30-8:45 McKay G.* Le L. Wagstaff J. 0/ivines in Angrite LEW87051: Phenos or Xenos? 8:45-9:00 Kring D. A.* Boynton W. V. Hill D. H. Haag R. A. Petrologic Description of Eagles Nest: A New Olivine Achondrite 9:00-9:15 Harvey R. P.* McSween H. Y. Jr. Parental Magmas of the Nakhlites: Clues from the Mineralogy of Magmatic Inclusions 9:15-9:30 Jones J. H. Jurewicz A. J. G.* Le L. A Liquidus Phase Diagram for a Primitive Shergottite 9:30-9:45 Nyquist L. E.* Harper C. L. Wiesmann H. Bansal B. Shih C.-Y. 142Ndj144Nd in SNCs and Early Differentiation of a Heterogeneous Martian (?)Mantle 9:45-10:00 Wadhwa M.* McSween H. Y. Jr. Crozaz G. Trace Element Distributions in Minerals of EETA79001: Clues to the Petrogenesis ofa Unique Shergottite 10:00-10: 15 Michel R.* Audouze J. Begemann F. Cloth P. Dittrich B. Dragovitsch P. Filges D. Herpers U. Hofmann H. J. Lavielle B. Liipke M. Richardt S. Rosel R. Ruter E. Schnatz-Biittgen M. Signer P. Simonoff G. N. Weber H. Wieler R. WOlfli W. Zanda B. Simulation of the Interaction of Galactic Protons with Meteoroids: Isotropic Irradiation of an Artificial Meteoroid with 1.6 Ge V Protons 10:15-10:30 Treiman A. H.* Gooding J. L. Iddingsite in the Nakhla Meteorite: TEM Study of Mineralogy and Texture of Pre-Terrestrial (Martian?) Alterations 10:30-10:45 Karlsson H. R.* Clayton R.N. Gibson E. K. Mayeda T. K. Socki R. A. Extraterrestrial Water of Possible Martian Origin in SNC Meteorites: Constraints from Oxygen Isotopes 10:45-11 :00 Hartmetz C. P.* Wright I. P.
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