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

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

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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. Pillinger C. T. Attempts to Constrain the Carbon Isotopic Composition of Dispersed Carbonate in EETA 79001 5

11:00-11:15 Wentworth S. J. Gooding J. L.* Carbonate and Sulfate Minerals in the Chassigny Meteorite 11:15-11:30 Lindstrom D. 1.* Microprobe Studies of Microtomed Particles of"White Druse" Salts in Shergottite EETA 79001

POSTER PRESENTATION TO BE FEATURED MONDAY IN POSTER SESSION I 4:00-6:00 p.m. Room C Herpers U. Rosel R. Michel R. Liipke M. Filges D. Dragovitsch P. Wolfli W. Dittrich B. Hofmann H. J. Simulation of the Interaction of Galactic Protons with Meteoroids: On the Production of 7Be, 10Be and 22 Na in an Artificial Meteoroid Irradiated Isotropically with 1.6 GeV Protons 6

Monday, July 22, 1991 NEBULA AND PARENT BODY PROCESSING I (CONTINUED) 1:15 p.m. Room A

Chairmen: C. L. Harper A. Sargent

I: 15-1:30 Harper C. L. * Wiesmann H. Nyquist L. E. 135 Cs-135 Ba: A New Cosmochronometric Constraint on the Origin of the Earth and the Astrophysical Site of the Origin of the Solar System 1:30-1:45 Cuzzi J. N.* Champney J. M. Dobrovolskis A. R. Particle-Gas Dynamics in the Protoplanetary Nebula 1:45-2:00 Kurat G. Brlindstatter F. Palme H.* Spettel B. Prinz M. Maralinga (CK4): Record of Highly Oxidizing Nebular Conditions 2:00-2:15 Nagahara H.* Kushiro I. Mysen B. O. Gas-Solid Phase Diagram of Olivine and Its Application to Chondrites 2:15-2:30 Palme H.* Weinbruch S. El Goresy A. Reheating of Allende Components Before Accretion 2:30-2:45 Hua X.* Buseck P.R. El Goresy A. Fayalitic Halos Around FeNi Inclusions in Forsterite in the Kaba Carbonaceous Chondrite 2:45-3:00 Metzler K.* Bischoff A. Morfill G. Accretionary Dust Mantles in CM Chondrites: Chemical Variations and Calculated Time Scales of Formation 3:00-3:15 Brearley A. J. * Geiger T. Mineralogical and Chemical Studies Bearing on the Origin of Accretionary Rims in the Murchison CM2 Carbonaceous Chondrite 3:15-3:30 Alexander C. M. O'D.* The Origin of Matrix and Rims in Bishunpur (L/ LL3); An Ion Probe Study 3:30-3:45 Bourcier W. L. * Zolensky M. E. Aqueous Alteration on the Parent Bodies of Carbonaceous Chondrites: Computer Simulations of Late-Stage Oxidation 3:45-4:00 Hyman M. * Zinner E. K. Rowe M. W. Oxygen Isotopic Compositions of Individual Meteoritic Magnetite Grains from Carbonaceous Chondrites 7

POSTER PRESENTATION TO BE FEATURED MONDAY IN POSTER SESSION I 4:00-6:00 p.m. Room C Stepinski T. Magnetization of Meteorites by Dynamo-generated Magnetic Fields in the Solar Nebula Weinbruch S. Palme H. El Goresy A. Metal-Forsterite Equilibration in Allende 8

Monday, July 22, 1991 ENSTATITE CHONDRITES AND AUBRITES 1:15p.m. RoomB

Chairmen: C. Caillet G. Crozaz

1:15-1:30 Blander M.* Unger L. Pelton A. Ericksson G. A Possible Origin of Ell Chondrites from a High- Temperature- High Pressure Solar Gas 1:30-1:45 Lofgren G. E.* DeHart J. M. Lanier A. B. Dynamic Crystallization Characteristics of Enstatite Chondrite Chondrules 1:45-2:00 Zinner E. Crozaz G.* Lundberg L. El Goresy A. Nagel H.-J. Evidence for 53 Cr Excess in the EI3 Chondrite MAC 88136 2:00-2:15 Hutson M. L.* Na-Cr Sulfide Phases in the Indarch (EH4) Chondrite 2:15-2:30 MuenowD. M. Keil K.* Wilson L. High- Temperature Mass Spectrometric Degassing of Enstatite Chondrites: Implications for Pyroclastic Volcanism on the Aubrite Parent Body 2:30-2:45 Grady M. M. * Ash R. D. Morse A. D. Pillinger C. T. Acfer 182: An Unusual Chondrite with Affinities to ALH 85085 2:45-3:00 Wasson J.* Kallemeyn G. W. Zhou L. Rubin A. E. Qingzhen Chunks: Nebular Components at the Formation Location of the EH Chondrites 3:00-3:15 Hutcheon I. D.* Bar-Matthews M. Carpenter P. K. Cr Isotopic Composition of Sulfides in the Qingzhen Enstatite Chondrite 3:15-3:30 Chen Y.* Pernicka E. Wang D. The Trace Element Chemistry and Composition of Niningerite in Enstatite Meteorites 3:30-3:45 Floss C.* Crozaz G. REE Variations in Oldhamite from Aubrites and EL6 Chondrites 3:45-4:00 Prinz M.* Weisberg M. K. Chatterjee N. LEW88055: Aubritic Inclusions in a Si-Free Iron Meteorite 4:00-4:15 Murty S. V. S. * Sheel V. Production Rate of Cosmogenic Nitrogenfrom Norton County Aubrite 9

POSTER PRESENTATIONS TO BE FEATURED MONDAY IN POSTER SESSION I 4:00-6:00 p.m. Room C

Chen Y. Lin Y. Pemicka E. Wang D. The Positive Eu Anomaly and Sc Enrichment of Minerals A and B in Enstatite Meteorites Russell S. Pillinger C. T. Arden J. W. A New Kind of Meteoritic Diamond in Abee 10

Tuesday, July 23, 1991 NEBULA AND PARENT BODY PROCESSING II 8:30a.m. Room A

Chairmen: c. Gopel A. E. Rubin

8:30-9:00 Basri G.* Violent Variability in the Young Solar Nebula: Case Studies from the T Tauri Stars 9:00-9:30 Backman D. E.* Paresce F. Nearby Main Sequence Stars with Cool Circumstellar Material 9:30-9:45 Gopel C.* Manhes G. Allegre C. J. Constraints on the Time of Accretion and Thermal Evolution of Chondrite Parent Bodies by Precise U-Pb Dating of Phosphates 9:45-10:00 Wetherill G. W.* A New Mode/for the Formation of the Asteroids-The Parent Bodies of the Meteorites 10:00-10: 15 Nakamura T.* Tomeoka K. Takeda H. Shock-induced Deformation Recorded in the uoville CV Carbonaceous Chondrite 10:15-10:30 StOffler D.* Keil K. Scott E. R. D. Proposal for a Revised Petrographic Shock Classification of Chondrites 10:30-10:45 Scott E. R. D.* Keil K. Stoffler D. Impact Heating of Shocked Chondrites 10:45-11:00 Rubin A. E.* Silicate Darkening and Heterogeneous Plagioclase in CK and Ordinary Chondrites 11:00-11:15 Lodders K.* Palme H. The Role of Sulfur in Planetary Core Formation U:15-ll:30 Zahnle K.* Fractionation of Terrestrial Neon by Hydrodynamic Hydrogen Escape from Ancient Steam Atmospheres

POSTER PRESENTATION TO BE FEATURED MONDAY IN POSTER SESSION I 4:00-6:00 p.m. Roome StOffler D. Keil K. Scott E. R. D. New Shock Classification of Chondrites: Implications for Parent Body Impact Histories II

Tuesday, July 23, 1991 ACHONDRITE STEW 8:30 a.m. Room B

Chairmen: D. D. Bogard J. S. Delaney

8:30-8:45 Kagi H.* Takahashi K. Masuda A. Raman Scattering and lAser-Induced Luminescence from Micro Diamonds in Ureilites 8:45-9:00 Miyamoto M. Takeda H. • Cooling Histories of Primitive Achondrites Yamato 74357 and MAC88177 9:00-9:15 Yanai K.* Unbrecciated and Porphyritic Eucrite Asuka-15 Composed of Silica Mineral-Plagioclase-Pyroxenes 9:15-9:30 Delaney J. S.* Fe f Mn Ratios in Basaltic Achondrites and Primitive Meteorites 9:30-9:45 Lugmair G. W.* Galer S. J. G. Carlson R. W. Isotope Systematics of Cumulate Eucrite EET-87520 9:45-10:00 Bogard D. D.* Garrison D. H. 39Ar- 40Ar Ages of Achondrites: Evidence for a Lunar-like Cataclysm? 10:00-10:15 Yamaguchi A. • Takeda H. Textural Variations and the Impact History of the Millbillillie Eucrite 10:15-10:30 Ruzicka A.* Boynton W. V. Zone Sequences, Widths and Compositions of Olivine Coronas in Mesosiderites 10:30-10:45 Kennedy A. K.* Stewart B. W. Hutcheon I. D. Wasserburg G. J. Trace Element Partitioning Within Mesosiderite Clasts 10:45-11:00 Mittlefehldt D. W. • Myers B. Petrology and Geochemistry of the EETA79002 Diogenite ll:00-11:15 Welten K. C.* Lindner L. Alderliesten C. de Jong A. F. M. Oosterbaan W. A. van der Borg K. Schultz L. Weber H. W. Cosmic-Ray Exposure Ages of Diogenites and Prospects for 10 Be as Shielding Parameter in BED-Achondrites ll:15-ll:30 Swindle T. D.* Burkland M. K. Noble Gases in the Monticello Howardite II :30-ll :45 Bukovanska M. * Ireland T. R. El Goresy A. Zircons in Padvarninkai Brecciated Eucrite 12

POSTER PRESENTATION TO BE FEATURED MONDAY IN POSTER SESSION I 4:00-6:00 p.m. Room C Takeda H. Yamaguchi A. Recrystallization and Shock Textures of Old and New Samples of Juvinas in Relation to its Thermal History

PRESENTED BY TITLE ONLY Britt D. T. Pieters C. M. Petaev M. I. Zaslavskaya N. I. Bidirectional Reflectance Spectra of the Divnoe Anomalous Achondrite 13

Tuesday, July 23, 1991 REFRACTORY INCLUSIONS 1:15 p.m. Room A

Chairmen: I. D. Hutcheon J. Paque

1:15-1:30 Greenwood R. C.* Hutchison R. Cressey G. Spinel-bearing Refractory Inclusions in Cold Bokkeveld (CM2) 1:30-1:45 Lee M. R.* Barber D. J. Formation and Alteration of Refractory Inclusions Within the CM Chondrites Cold Bokkeveld, Murchison and Murray 1:45-2:00 Lin Y. T. * El Goresy A. Fang H. Ca-Al-rich Inclusions in Ningqian (CV3) Chondrite: Evidence for Primordial High Enrichment in Rein Pt-Group Element Nuggets 2:00-2:15 Davis A.M.* Ultrarefractory Inclusions and the Nature of the Group II REE Fractionation 2:15-2:30 Jochum K. P. * Palme H. Spettel B. Large Nb- Ta Fractionations in Allende Ca, Al-rich Inclusions 2:30-2:45 Simon S. B. Grossman L. * Profiles of Ti3+ I Ti101 Ratios in Zoned Fassaite in Allende Refractory Inclusions 2:45-3:00 Caillet C.* MacPherson G. J. Zinner E. K. Al-Mg Isotopic Record of Recrystallization of a Refractory Inclusion During Accretion into the Leoville Parent Body 3:00-3:15 Sheng Y. J.* Hutcheon I. D. Wasserburg G. J. An Experimental Study of Mg Self-Diffusion in Spinel 3:15-3:30 Podosek F. A.* Prombo C. A. Grossman L. Zinner E. K. Chromium Isotopic Compositions of Individual Spinel Crystals from theMurchison Meteorite 3:30-3:45 Hashimoto A.* Evaporation of Melilite 3:45-4:00 Eisenhour D. D.* Buseck P. R. Nanophase Metals in Fremdlingefrom Allende: "Smokes"from the Early Solar System? 4:00-4:15 Goswami J. N.* Srinivasan G. Ulyanov A. A. Titanium, Calcium and Magnesium Isotopic Compositions in a Hibonite-rich Inclusion from Efremovka 14

POSTER PRESENTATIONS TO BE FEATURED MONDAY IN POSTER SESSION I 4:00-6:00 p.m. Roome Benstock E. J. Buseck P.R. TEM Cathodoluminescence Spectra of Meteoritic Minerals Nagahara H. Mysen B. O. Evaporation of Perovskite Ruzicka A. Boynton W. V. A Survey of CAis in Leoville and Vigarano: Rim Layers, Brecciation, Metamorphism, and Alteration Weisberg M. K. Prinz M. Kennedy A. Hutcheon I. D. Trace Elements in Refractory-rich Inclusions in CR2 Chondrites Srinivasan G. Ulyanov A. A. Goswami J. N. Magnesium Isotopic Fractionation in Refractory Inclusions: Indications for a Mineralogic Control Stephan T. TOP-SIMS, Applications in Meteorite Research, First Results 15

Tuesday, July 23, 1991 METEORITE EXPOSURE AGES AND SIZES 1:15 p.m. Room B

Chairmen: P. A. J. Englert G. F. Herzog

1:15-1:30 Nishiizumi K. Caffee M. W.* Finkel R. C. Arnold J. R. 10 Be and 53 Mn in Non-Antarctic Iron Meteorites 1:30-1:45 Garrison D. H.* Bogard D. D. Herzog G. F. Cosmogenic 36 Ar from Neutron Capture by 35 Cl in the Chico L6 Chondrite: Additional Evidence for Large Shielding 1:45-2:00 Klein J.* Fink D. Middleton R. Vogt S. Herzog G. F. 41 Ca in the Jilin (H5) Chondrite: A Matter of Size 2:00-2:15 Honda M.* Nagai H. Imamura M. Kobayashi K. Size and Composition Effects to Cosmogenic Nuclides in Meteorites 2:15-2:30 Bhandari N.* Mathew K. J. Rao M. N. Herpers U. Bremer K. Vogt S. WO!fli W. Hofmann H. J. Michel R. Bodemann R. Depth and Size Dependence of Cosmogenic Nuclide Production Rates in Meteoroids 2:30-2:45 Reedy R. C.* Cosmogenic-Nuclide Production in Very Large Meteorites 2:45-3:00 Vogt S. Albrecht A. Herzog G. F.* Klein J. Fink D. Middleton R. Weber H. Schultz L. Cosmogenic Nuclides in Short-lived Meteorites 3:00-3:15 GrafTh.* Marti K. Exposure Ages of LL and L/ LLChondrites and Implications for Parent Body Histories 3:15-3:30 Michel Th. Eugster O.** Niedermann S. Determination of the 81 Kr Saturation Activity and K.r Production Rates for Various Meteorite Classes; Application to Exposure Ages and Terrestrial Ages 3:30-3:45 Gilabert E. Lavielle B.* A Noble Gas Study in St. Severin Core Alii and Knyahinya Samples 3:45-4:00 Benoit P. H. Lu J. Jull A. J. T. Sears D. W. G.* Thermoluminescence and C-14 of Non-Antarctic Meteorites: Terrestrial Ages of Prairie State Finds 16

4:00-4:15 Sisterson J. M. * Jull A. J. T. Donahue D. J. Koehler A.M. Reedy R. C. Englert P. A. J. Cross Sections for Production of Carbon-14 from Oxygen and Silicon: Implications for Cosmogenic Production Rates

POSTER PRESENTATIONS TO BE FEATURED MONDAY IN POSTER SESSION I 4:00-6:00 p.m. Room C Nishiizumi K. Arnold J. R. Fink D. Klein J. Middleton R. 41 Ca Production Profile in the Allende Meteorite Vogt S. Fink D. Klein J. Korschinek G. Middleton R. Herzog G. F. 41 Ca and 36Cl Depth Profiles in the Iron Meteorite Grant 17

Tuesday, July 23, 1991 STEINBECK LECTURE 8:00p.m. RoomB

Susan Shillinglaw The Valley, the Mountains, the Sea: John Steinbeck's California

Biography in Brief

John Steinbeck was born in Salinas, California, in 1902. He left Salinas in 1919 to attend Stanford University, where he took courses in writing, literature, biology, and philosophy, but never completed a degree. In 1930 he and his first wife settled in Pacific Grove where, in 1935, he published his first successful novel, Tortilla Flat. In the 1940s Steinbeck, who saw each new book as an "experience," turned increasingly to other genres-film, journalism, theater-and to other fields of study, most notably marine biology and, later in his career, the Arthurian myths. All the while, however, he continued to produce novels of great stature. Steinbeck is recognized as one of America's foremost twentieth- century writers. He wrote about commonplace Americans trying to achieve dignity in a culture that denied them a voice, using California and the promise it held out to so many as the backdrop against which his actors played. Steinbeck is thus very much a California writer, and a western vision informs his greatest novels-The Grapes of Wrath, Of Mice and Men, Cannery Row, and East of Eden. He won the Nobel prize for literature for The Winter of Our Discontent in 1962. Steinbeck remarried twice and spent the latter part of his life in New York City and on Long Island. He died in 1968. 20

Wednesday, July 24, 1991 LUNAR ORIGINS, PROCESSES AND METEORITES 8:30 a.m. Room B

Chairmen: O. Eugster R. L. Korotev

8:30-8:45 Symes S.* Benoit P. H. Sears H. Sears D. W. G. Natural Thermoluminescence and Anomalous Fading: Terrestrial Age, Transmit Times and Perihelia of Lunar Meteorites 8:45-9:00 Gault D. E.* Schultz P. H. Ejecta from Lunar Impacts: Where is it on Earth? 9:00-9:15 Hill D. H.* Boynton W. V. Haag R. A. Calcalong Creek: A KREEPy Lunar Meteorite 9:15-9:30 Lindstrom M. M. * Relationships Among Basaltic Lunar Meteorites 9:30-9:45 James O. B. McGee J. J.* FeO and MgO Trends in the Plagioclases of 1\.vo Apollo 15 Mare Basalts 9:45-10:00 Ryder G.* Plagioclase, Ilmenite, Lunar Magma Oceans, and Mare Basalt Sources 10:00-10:15 Korotev R. L. * There Are Too Many Kinds of Mafic Impact Melt Breccias at Apollo 16for Them All to be Basin Products 10:15-10:30 Jakes P. * Sen S. Matsuishi K. Silicate Melt Structures, Physical Properties, and Planetary Accretion 10:30-10:45 Warren P. H.* Possible Inheritance of Silicate Differentiation During Lunar Origin by Giant Impact 10:45-11:00 Takahashi K. * Masuda A. Remnant of Water-Rock Interaction on the Lunar Surface 11:00-11:15 Keller L. P. McKay D. S. * The Origin of Amorphous Rims on Lunar Plagioclase Grains: Solar Wind Damage or Vapor Condensates? 11:15-11:30 Niedermann S.* Eugster 0. Terrestrial Kr and Xe in Extraterrestrial Rocks: Chemical Adsorption of Noble Gases? 21

Wednesday, July 24, 1991 INTERSTELLAR/METEORITE CONNECTIONS II. DIAMONDS, SiC AND RELATED ANOMALIES (CONTINUED) 1:30 p.m. Room A

Chairmen: F. A. Podosek U.Ott

1:30-1:45 Ozima M. * Zashu S. Radiation-induced Diamond (Carbonado): A Possible Mechanism for the Origin of Diamond in Some Meteorites 1:45-2:00 Lewis R. S.* Russ G. R. Anders E. Liu Y.-G. Schmitt R. A. Elemental Abundance Patterns in Presolar Diamonds 2:00-2:15 Verchovsky A.* Ott U. A New Xe Component in Diamond-rich Acid Residues from Efremovka CV3 Carbonaceous Chondrite 2:15-2:30 Ott U.* Lohr H. P. Begemann F. Ne-E(H) and Kr-, Xe-S in Indarch and Krymka: Are They a Measure of the SiC Abundance? 2:30-2:45 Nichols R. H. Jr.* Hohenberg C. M. AmariS. Lewis R. S. 22Ne-E(H) and 4He Measured in Individual SiC Grains Using Laser Gas Extraction 2:45-3:00 RussellS. S.* Ash R. D. Pillinger C. T. Arden J. W. Meteoritic Silicon Carbide-Separate Grain Populations and Multiple Components Revealed by Stepped Combustion 3:00-3:15 Hoppe P.* Geiss J. Buhler F. Neuenschwander J. AmariS. Lewis R. S. Carbon, Nitrogen and Silicon Isotopes in Small Interstellar SiC Grains from the Murchison C2 Chondrite 3:15-3:30 Amari S. * Zinner E. Lewis R. Ca, Ti and Sm Isotopic Compositions of Fine-grained Interstellar SiC 3:30-3:45 Ireland T. R.* Zinner E. K. AmariS. Anders E. More Ti Isotopic Compositions of Presolar SiC from the Murchison Meteorite 3:45-4:00 Prombo C. A.* Podosek F. A. AmariS. Anders E. Lewis R. S. S-Process Ba in SiC from Murchison Series KJ 4:00-4:15 Zinner E.* Amari S. Lewis R. Silicon Carbide from a Supernova? 22

4:15-4:30 Huss G. R.* Lewis R. S. 1Wo Distinct "Normal Planetary" Noble Gas Carriers in Chondrites 4:30-4:45 Hashizume K. * Sugiura N. The Correlation Between the Primordial Argon and Nitrogen in UOCs 23

Wednesday, July 24, 1991 CRATERS, CRATERING AND TEKTITES 1:30 p.m. Room B

Chairmen: C. Koeberl H.J. Melosh

1:30-1:45 Schultz P. H.* Gault D. E. Are '!Win Craters Caused by Double Impactors? 1:45-2:00 Melosh H. J.* Stansberry J. Doublet Craters and the Tidal Disruption of Binary Asteroids 2:00-2:15 Langenhorst F.* Deutsch A. Hot Shock Experiments: Simulation of an Important Process in the Early Solar System and in Multi-Ring Cratering 2:15-2:30 Miura Y.* K.ato T. Anomalous Shocked Quartz in Australian Impact Craters 2:30-2:45 Zhou Y. Q.* Chai C. F. The Discovery of Shocked Quartz and Stishovite in the Permian/ Triassic Boundary Clay of Huangshi, China 2:45-3:00 Schmidt G.* Pernicka E. The Determination of Platinum Group Elements (PGE) in Target Rocks and Fall-Back Material of the Nordlinger Ries Impact Crater (Germany) 3:00-3:15 K.oeberl C.* Fiske P. S. Beaverhead Impact Structure, Montana: Geochemistry of lmpactites and Country Rock Samples 3:15-3:30 Horz F.* Mittlefehldt D. W. See T. H. Dissemination and Fractionation of Projectile Material in Impact Melts from the Wabar Crater, Saudi Arabia 3:30-3:45 Melnik W. L.* Ablation of Australian Tektites Supportive of a Terrestrial Origin 3:45-4:00 Vickery A. M. * Browning L. Water Depletion in Tektites 4:00-4:15 King E. A.* K.oeberl C. Muong Nong-type and Splashform-type Tektites from Hainan, China 4:15-4:30 Dietz R. S.* McHone J. F. Astroblemes Recently Confirmed with Shatter Cones 4:30-4:45 Hartung J.* K.unk M. Reimold W. Miller R. GrieveR. Roter Kamm Crater Age: 3.5 to 4.0 Ma 24

POSTER PRESENTATIONS TO BE FEATURED TUESDAY IN POSTER SESSION II 4:00-6:00 p.m. Room C BarlowN. G. Degradation Studies of Martian Impact Craters Bouska V. Maslowska H. Discriminant Analysis of the Tektite Chemical Data Read W. F. 1Wo Relatively Young Impact Craters Near Waupun, Wisconsin Ouyang Z. Guan Y. Cheng H. Zhang Y. Paleoclimate Cycles Due to Impacts by Extraterrestrial Bodies-A Study on the Possibility Deutsch A. Langenhorst F. Hot Shocked Bushveld Gabbro (60 GPa-630°C): Mineralogy and Rb - Sr Systematics Miura Y. Kato T. Okamoto M. Anomalous Quartz from Possible Impact Craters in Japan Wu S. Zhang J. Liu G. 1Wo New Impact Craters: Zhuola and Hong Kong

PRESENTED BY TITLE ONLY MardonE. G. Mardon A. The 1095 AD Meteor Event as Described in the Anglo Saxon Chronicle 25

Wednesday, July 24, 1991 CRETACEOUS-TERTIARY IMPACT(S) 8:00p.m. Room A

Chairman: A. Vickery

8:00-8:30 Alvarez W.* Impact and Mass Extinction at the Cretaceous- Tertiary Boundary: The Search for the Crater(s) 8:30-8:45 Bohor B. F.* Betterton W. J. Maximum Shocked Grain Dimensions from K/ T Ejecta, Western Interior 8:45-9:00 Bohor B. F.* Betterton W. J. K/ T Spherules Are Altered Microtektites 9:00-9:15 Kyte F. T. * Zhou L. Bohor B. F. Magnesiowiistite-A New High- Temperature Mineral in K/ T Boundary Sediments

PRESENTED BY TITLE ONLY Hildebrand A. R. Boynton W. V. Proximal Ejecta of the Chicxulub Crater, Yucatan Peninsula, Mexico 26

Thursday, July 25, 1991 IDPs: LDEF, STRATOSPHERE, GREENLAND AND ANTARCTICA 8:30 a.m. Room A

Chairmen: G.J. Flynn E. K. Jessberger

8:30-8:45 Borg J.* Vassent B. Bibring J.-P. Mandeville J.-Cl. Laval R. Detection of Cosmic Dust Particles: Data from COMET Experiment and FRECOPA Payload 8:45-9:00 Brownlee D. E. • Horz F. Laurance M. Bernhard R. P. Warren J. Bradley J. P. The Composition of Meteoroids Impacting LDEF 9:00-9:15 Lyon I. C. • Gilmour J. D. Saxton J. M. Turner G. Oxygen Isotopes Implanted in the LDEF Spacecraft 9:15-9:30 AmariS. Foote J. Jessberger E. K. Simon C. Stadermann F.* Swan P. Walker R. M. Zinner E. SIMS Analysis of Micrometeoroid Impacts on LDEF 9:30-9:45 Yiou F. • Raisbeck G. M. Jehanno C. The Micrometeorite Flux to the Earth During the Last -200,000 Years as Deduced from Cosmic Spherule Concentration in Antarctic Ice Cores 9:45-10:00 Nolan M.* Greenberg R. Delivery of Meteorites from the Asteroid Belt 10:00-10:15 Jess berger E. K. • Bohsung J. Chakaveh S. Traxel K. New PIXE Analyses of Interplanetary Dust Particles 10:15-10:30 Bradley J.P.* Electron Energy Loss Spectroscopy of the Fine Grained Matrices of Interplanetary Dust Particles 10:30-10:45 Flynn G. J.* SuttonS. R. Average Minor and Trace Element Contents in Seventeen "Chondritic" IDPs Suggest a Volatile Enrichment 10:45-ll :00 Keller L. P. • Thomas K. L. McKay D. S. Transmission Electron Microscopy of an Interplanetary Dust Particle With Links to C/ Chondrites ll:OO-ll:l5 Albrecht A.* Hall G. S. Herzog G. F. Brownlee D. E. Determination of Trace Elements in Extraterrestrial Materials by/CP/MS ll:l5-ll:30 Nier A. O.* Schlutter D. J. Extraction of4Hefrom IDPs by Step-Heating 27

11:30-11:45 Colangeli L.* Mennella V. Bussoletti E. Bellicci G. Formisano V. Mastracci F. Laboratory Spectroscopic Measurements on Interplanetary Dust Materials

POSTER PRESENTATIONS TO BE FEATURED TUESDAY IN POSTER SESSION II 4:00-6:00 p.m. Room C Flynn G. J. SuttonS. R. Klock W. Volatile Trace Elements in Large Micrometeorites from Greenland Yates P. D. Wright I. P. Fillinger C. T. Hutchison R. A Possible Link Between Melted Micrometeorites from Greenland and Antarctica with an Asteroidal Origin: Evidence from Carbon Stable Isotopes Radicati di Brozolo F. Harris D. W. Chakel J. A. Fleming R. H. Bunch T. E. Imaging Analysis of LDEF Craters

PRESENTED BY TITLE ONLY Rietmeijer F. J. M. Dynamic Pyrometamorphism of Interplanetary Dust Particles Compared to Atmospheric Entry Model Temperatures 28

Thursday, July 25, 1991 CHONDRULES 8:30 a.m. Room B

Chairmen: J. N. Grossman J.A. Wood

8:30-8:45 Skinner W. R.* Leenhouts J. M. Implications of Chondrule Sorting and Low Matrix Contents of Type 3 Ordinary Chondrites 8:45-9:00 Presper T. * Palme H. Are Chondrules Precursors of Some Cosmic Spherules? 9:00-9:15 Bunch T.* Cas sen P. Reynolds R. Chang S. Podolak M. Schultz P. Could Chondrule Rims Be Formed or Modifred by Parent Body Accretion Events? 9:15-9:30 Grossman J. N.* Co-Evolution of Chondrules and Matrix in Ordinary Chondrites 9:30-9:45 Nehru C. E.* Prinz M. Weisberg M. K. Clayton R.N. Mayeda T. K. Matrix Lumps in Dhajala and Mezo-Madaras: Implications for Chondrule-Matrix Relationships in Ordinary Chondrites 9:45-10:00 Lee M.S.* Rubin A. E. Wasson J. T. Compound Chondrules in Ordinary Chondrites 10:00-10:15 Connolly H. C. Jr.* Jones B. D. Hewins R. H. The Effect of Precursor Grain Size on Chondrule Textures 10:15-10:30 McCoy T. J. * Pun A. Keil K. Spinel-bearing, Al-rich Chondrules: Modified by Metamorphism or Unchanged Since Crystallization? 10:30-10:45 Nakamura N.* Inoue M. Highly Fractionated REE in Chondrules and Mineral Fragments from Murchison (CM2): Alteration or Igneous? 10:45-11:00 Wood J. A.* Alkali Fractionation Among Chondrules of the Mezo-Madaras Chondrite 11:00-11:15 LuJ.* Sears D. W. G. Benoit P. H. Prinz M. Weisberg M. K. Related Compositional and Cathodoluminescence Trends in Chondrules from Semarkona 11:15-11:30 DeHart J. M.* Lofgren G. E. Low Temperature Annealing and Cathodoluminescence Studies of Type I Chondrule Compositions 29

11:30-11:45 Fredriksson K.* Wlotzka F. Spettel B. To Make, Perhaps, or Not to Make Chondrules

POSTER PRESENTATIONS TO BE FEATURED TUESDAY IN POSTER SESSION II 4:00-6:00 p.m. Roome Leenhouts J. M. Skinner W. R. Shape-Differentiated Size Distributions of Chondrules in Type 3 Ordinary Chondrites Sears D. W. G. Lu J. Benoit P. H. Volatile Loss During Chondrule Formation 30

Thursday, July 25,1991 PLENARY SESSION: MEDAL WINNERS' PRESENTATIONS 1:30 p.m. Room A

Chairman: E. Anders

1:30-2:00 Clayton D. D., 1991 Leonard Medal Recipient Meteoritics and the Origins of Atomic Nuclei

2:00-2:30 Masaitis V. L., 1991 Barringer Medal Recipient Impact Craters: Are they Useful?

2:30-2:45 COFFEE BREAK 31

Thursday, July 25, 1991 ORDINARY CHONDRITES 2:45p.m. Room A

Chairmen: R. Hutchison E. Gibson

2:45-3:00 Marti K.* Kim J. S. Kim Y. Lavielle B. Prinz M. Progress in the Acapulco Consortium 3:00-3:15 Hutchison R.* ReedS. J. B. Ash R. D. Pillinger C. T. Adrar 003: A New Extraordinary Unequilibrated Ordinary Chondrite 3:15-3:30 Ebihara M.* REE Abundance in Acid Residues of UOC's-A Possible Index for Subclassification 3:30-3:45 Brearley A. J.* Casanova I. Miller M. L. Keil K. Mineralogy of an Unusual Cr-rich Inclusion in the Los Martinez (1.6) Chondritic Breccia 3:45-4:00 Kim J. S.* Marti K. Perron C. Pellas P. Xenon in Chondritic Metals 4:00-4:15 Socki R. A. Gibson E. K.* Jull A. J. T. Karlsson H. R. Carbon and Oxygen Isotope Composition of Carbonates from an L6 Chondrite: Evidence for Terrestrial Weathering from the Holbrook Meteorite 4:15-4:30 Pedroni A.* Weber H. W. Exceptionally Unfractionated Solar Noble Gases in the H3-H6 Chondrite Acfer Ill 4:30-4:45 Thakur A. N. * Thermal Release Pattern of Hg Isotopes in Chondrites

POSTER PRESENTATIONS TO BE FEATURED TUESDAY IN POSTER SESSION IT 4:00-6:00 p.m. Roome Hutchison R. Barton J. C. Pillinger C. T. The L6 Chondrite Fall at Glatton, England, 1991 May 5 Xie X. LiZ. Wang D. Liu J. Hu R. Chen M. The New Meteorite Fall of Yanzhuang, A Severely Shocked H6 Chondrite with Black Molten Materials LiZ. Xie X. Zhang D. The Discovery of Four Concentric Ring Growth Pattern of Fe-Ni Metal Nucleation and Crystallization in Space 32

Thursday, July 25, 1991 IRON METEORITES 2:45 p.m. Room B

Chairmen: J. I. Goldstein S. Niemeyer

2:45-3:00 Casanova I.* Distribution of Silicon Between Kamacite and Taenite 3:00-3:15 Bajt S.* Rasmussen K. L. PIXE Measurements on the Iron Meteorite Mundrabilla 3:15-3:30 Goldstein J. 1.* Williams D. B. Zhang J. The Plessite Structure in Iron Meteorites 3:30-3:45 Kracher A.* Microdistribution of Chromium in Metal and Sulfide of JAB Silicate Inclusions and Winonaites 3:45-4:00 Niemeyer S. * Esser B. K. Re-Os Chronology of JAB, liE, and IIIAB Iron Meteorites 4:00-4:15 Esat T.* Bennett V. Negative Thermal Ionization and Isotope Dilution Applied to the Determination of Re and Os Concentrations and Os Isotopic Compositions in Iron Meteorites 4:15-4:30 Birck J. L.* Roy-Barman M. Allegre C. J. The Rhenium Osmium Chronometer: The Iron Meteorites Revisited 4:30-4:45 Lu Q. * Masuda A. Abundance Ratios of Molybdenum Isotopes in Some Iron Meteorites 4:45-5:00 Haack H.* Evidence for Crystallization of the IIIAB Core by Inwards Dendritic Growth

POSTER PRESENTATIONS TO BE FEATURED TUESDAY IN POSTER SESSION II 4:00-6:00 p.m. Room C SmithS. P. HunekeJ. C. High Sensitivity Survey Chemical Analysis of Metal-rich Meteorites by Secondary Ion Mass Spectrometry and Glow Discharge Mass Spectrometry Lipschutz M. E. Vogt S. Elmore D. Rickey F. A. Simms P. C. PRIME Lab: A Dedicated AMS Facility for Earth and Planetary Science Research 33

Friday, July 26, 1991 S ASTEROIDS ARE NOT ORDINARY CHONDRITES? 8:30 a.m. Room A

Chairmen: D. T. Britt J. F. Bell

8:30-8:55 Bell J. F.* The S-Class Asteroid Debate: Historical Outline 8:55-9:15 Lipschutz M. E.* Ordinary Chondrite Classification and Meteoritic Evidence RegardingParent Bodies 9:15-9:40 Gaffey M. 1.* The Mineralogy of S-type Asteroids: Why Doesn't Spectroscopy Find Ordinary Chondrites in the Asteroid Belt? 9:40-10:00 Pellas P.* Exotic Clasts in Meteoritic Breccias I 0:00-10:20 Wetherill G. W.* S Asteroids: Evidence from Astronomy and Orbital Mechanics 10:20-10:40 Ostro S. J.* Radar Constraints on Asteroid Metal Abundances and Meteorite Associations 10:40-ll :00 Chapman C. R. * S-type Asteroids and the Gaspra Fly-By 11 :00-ll :20 Britt D. T.* "Space Weathering':· Are Regolith Processes an Important Factor in the S-type Controversy? 11:20-ll:35 McSween H. Y. Jr.* Oxidation During Metamorphism: Another Argument Against S-Asteroids Having Chondritic Compositions ll:35-ll:50 Lebofsky L. A.* Howell E. S. Britt D. T. Characterization of Low Albedo Asteroids

POSTER PRESENTATIONS TO BE FEATURED TUESDAY IN POSTER SESSION II 4:00-6:00 p.m. Room C Bell J. F. Size-dependent Composition in the Meteoroid/ Asteroid Population: Probable Causes and Possible Implications Howell E. S. Merenyi E. Lebofsky L. A. Using Neural Networks to Classify Asteroid Spectra Saito J. Takeda H. Mineralogical Study of Metals in MAC88177 with Reference to S-type Asteroids . 34

Friday, July 26, 1991 CARBONACEOUS CHONDRITES 8:30a.m. RoomB

Chairmen: A. EI Goresy M. E. Zolensky

8:30-8:45 Geiger T. * Bischoff A. The CK Chondrites-Conditions of Parent Body Metamorphism 8:45-9:00 Zolensky M. E.* Mineralogy and Matrix Composition of"CR" Chondrites Renazzo and EET 87770, and Ungrouped Chondrites Essebi and MAC87300 9:00-9:15 Kallemeyn G. W.* Compositional Studies of Antarctic Carbonaceous Chondrites Possibly Related to AI Rais and Renazzo 9:15-9:30 Weisberg M. K.* Prinz M. Chatterjee N. Clayton R.N. Mayeda T. K. Dark Inclusions in CR2 Chondrites 9:30-9:45 Ash R. D.* Grady M. M. Morse A. D. Pillinger C. T. Renazzo-like Chondrites; A Light Element Stable Isotope Study 9:45-10:00 Jones R. H.* Effect of Metamorphism on Isolated Olivine Grains in CO3 Chondrites 10:00-10:15 Xiao X. Lipschutz M. E.* Volatile Trace Elements in Antarctic Carbonaceous Chondrites: Sturm und Schlang 10:15-10:30 Weber H. W. Schultz L.* Noble Gases in Eight Unusual Carbonaceous Chondrites 10:30-10:45 Takaoka N.* Nagao K. Miura Y. Noble Gases in Y-74063 (Unique) 10:45-11:00 Rotaru M.* Birck J. L. Allegre C. J. Chromium Isotopic Composition in the Enstatite Chondrite Qingzhen and in Magnetitite of Orgueil 11:00-11:15 Wang S. Cheng P. Buseck P.R.* Imaging C60 BuckyBalls-Are They Really Round, Firm, and Closely Packed? 11:15-11:30 Schmitt B. Espinasse S. Klinger J.* A Possible Mechanism for Outbursts of Comet P /Halley at Large Heliocentric Distances 11:30-11:45 Thiel K.* Kolzer G. Dust Investigation of Insolated Comet Nucleus Analogues 35

POSTER PRESENTATIONS TO BE FEATURED TUESDAY IN POSTER SESSION II 4:00-6:00 p.m. Room C Weisberg M. K. Prinz M. El Djouf89001: A New CR2 Chondrite Bischoff A. Palme H. Clayton R. N. Mayeda T. K. Grund T. Spettel B. Geiger T. Endress M. Beckerling W. Metzler K. New Carbonaceous and Type 3 Ordinary Chondrites from the Sahara Desert Albrecht A. Vogt S. Herzog G. F. Klein J. Fink D. Middleton R. 26AI and 10 Be Contents of the Murchison (C2) Chondrite PalmaR. L. Chaffee S. Hyman M. Rowe M. W. Plasma Chemical Inert Gas Release from the Allende Meteorite

AUTHOR INDEX

Adams F. Interstellar/ Meteorite Connections I. ... , Wed. a.m., Room A Adriaens M. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Albrecht A. Carbonaceous Chondrites, Fri. a.m., Room B Albrecht A. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Albrecht A. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Alderliesten C. Achondrite Stew, Tue. a.m., Room B Alexander C. M. O'D. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Allamandola L. J. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Allegre C. J. Carbonaceous Chondrites, Fri. a.m., Room B Allegre C. J. Iron Meteorites, Thu. p.m., Room B Allegre C. J. Nebula and Parent Body Processing II, Tue. a.m., Room A AmariS. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A AmariS. Interstellar/ Meteorite ... II. (cont'd), Wed. p.m., Room A Anders E. Interstellar/ Meteorite ... II. (cont'd), Wed. p.m., Room A ArdenJ. W. Enstatite Chondrites and Aubrites, Mon. p.m., Room B ArdenJ. W. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Arnold J. R. Antarctic Meteorites, Mon. a.m., Room A Arnold J. R. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B AshR. D. Carbonaceous Chondrites, Fri. a.m., Room B Ash R. D. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Ash R. D. Interstellar/ Meteorite ... II. (cont'd), Wed. p.m., Room A Ash R. D. Ordinary Chondrites, Thu. p.m., Room A Audouze J. Primary and Secondary SNC ... ,Mon. a.m., Room B Backman D. E. Nebula and Parent Body Processing II, Tue. a.m., Room A Bajt S. Iron Meteorites, Thu. p.m., Room B Bansal B. Primary and Secondary SNC ... , Mon. a.m., Room B Bar-Matthews M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Barber D. J. Refractory Inclusions, Tue. p.m., Room A Barlow N. G. Craters, Cratering and Tektites, Wed. p.m., Room B Barton J. C. Ordinary Chondrites, Thu. p.m., Room A Basri G. Nebula and Parent Body Processing II, Tue. a.m., Room A Beckerling W. Carbonaceous Chondrites, Fri. a.m., Room B Beckwith S. Nebula and Parent Body Processing I, Mon. a.m., Room A Begemann F. Interstellar/ Meteorite ... II. (cont'd), Wed. p.m., Room A Begemann F. Primary and Secondary SNC ... , Mon. a.m., Room B Bell J. F. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Bellicci G. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Bennett V. Iron Meteorites, Thu. p.m., Room B Benoit P. H. Antarctic Meteorites, Mon. a.m., Room A Benoit P. H. Chondrules, Thu. a.m., Room B Benoit P. H. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Benoit P. H. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Benstock E. J. Refractory Inclusions, Tue. p.m., Room A Bernhard R. P. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Betterton W. J. Cretaceous-Tertiary lmpact(s), Wed. p.m., Room A Bhandari N. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Bibring J.-P. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Birck J. L. Carbonaceous Chondrites, Fri. a.m., Room B Birck J. L. Iron Meteorites, Thu. p.m., Room B Bischoff A. Carbonaceous Chondrites, Fri. a.m., Room B Bischoff A. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A X

Bishop J. L. Antarctic Meteorites, Mon. a.m., Room A Blake D. F. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Blander M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Bodemann R. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Bogard D. D. Achondrite Stew, Tue. a.m., Room B Bogard D. D. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Bohor B. F. Cretaceous-Tertiary Impact(s), Wed. p.m., Room A BohsungJ. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Borg J. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Bourcier W. L. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Bouska V. Craters, Cratering and Tektites, Wed. p.m., Room B Boynton W. V. Achondrite Stew, Tue. a.m., Room B Boynton W. V. Cretaceous-Tertiary Impact(s), Wed. p.m., Room A Boynton W. V. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Boynton W. V. Primary and Secondary SNC ... , Mon. a.m., Room B Boynton W. V. Refractory Inclusions, Tue. p.m., Room A Bradley J. P. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Briindstatter F. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Brearley A. J. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Brearley A. J. Ordinary Chondrites, Thu. p.m., Room A BremerK. Antarctic Meteorites, Mon. a.m., Room A BremerK. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Britt D. Antarctic Meteorites, Mon. a.m., Room A Britt D. T. Achondrite Stew, Tue. a.m., Room B Britt D. T. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Brown L. E. Interstellar/Meteorite ... II., Wed. a.m., Room B Browning L. Craters, Cratering and Tektites, Wed. p.m., Room B Brownlee D. E. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Brownlee D. E. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Biihler F. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Bukovanska M. Achondrite Stew, Tue. a.m., Room B Bunch T. Chondrules, Thu. a.m., Room B Bunch T. E. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Burkland M. K. Achondrite Stew, Tue. a.m., Room B Buseck P.R. Carbonaceous Chondrites, Fri. a.m., Room B Buseck P.R. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Buseck P.R. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Buseck P.R. Refractory Inclusions, Tue. p.m., Room A Bussoletti E. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A CaffeeM. W. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Caillet C. Refractory Inclusions, Tue. p.m., Room A Carlson R. W. Achondrite Stew, Tue. a.m., Room B Carpenter P. K. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Casanova I. Iron Meteorites, Thu. p.m., Room B Casanova I. Ordinary Chondrites, Thu. p.m., Room A Cassen P. Chondrules, Thu. a.m., Room B Cassen P; Nebula and -Parent Body Prcrcessing I, Mon. a.m., Room A Chaffee S. Carbonaceous Chondrites, Fri. a.m., Room B Chai C. F. Craters, Cratering and Tektites, Wed. p.m., Room B Chakaveh S. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A ChakelJ. A. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Champney J. M. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Chang S. Chondrules, Thu. a.m., Room B xi

Chang S. Interstellar/ Meteorite Connections I .... ,Wed. a.m., Room A Chapman C. R. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Chatterjee N. Carbonaceous Chondrites, Fri. a.m., Room B Chatterjee N. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Chen M. Ordinary Chondrites, Thu. p.m., Room A Chen Y. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Cheng H. Craters, Cratering and Tektites, Wed. p.m., Room B Cheng P. Carbonaceous Chondrites, Fri. a.m., Room B Cheng P. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Clayton D. D. Interstellar/Meteorite ... II., Wed. a.m., Room B Clayton D. D. Plenary: Medal Winner Presentations, Thu. p.m., Room A Clayton R. N. Carbonaceous Chondrites, Fri. a.m., Room B Clayton R.N. Chondrules, Thu. a.m., Room B Clayton R. N. Primary and Secondary SNC ... , Mon. a.m., Room B Clemett S. J. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Cloth P. Primary and Secondary SNC ... , Mon. a.m., Room B Colangeli L. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Connolly H. C. Jr. Chondrules, Thu. a.m., Room B Cressey G. Refractory Inclusions, Tue. p.m., Room A Crozaz G. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Crozaz G. Primary and Secondary SNC ... , Mon. a.m., Room B Cuzzi J. N. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Davis A.M. Refractory Inclusions, Tue. p.m., Room A DeHartJ. M. Chondrules, Thu. a.m., Room B DeHartJ. M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B de Jong A. F. M. Achondrite Stew, Tue. a.m., Room B Delaney J. S. Achondrite Stew, Tue. a.m., Room B Delisle G. Antarctic Meteorites, Mon. a.m., Room A Deutsch A. Craters, Cratering and Tektites, Wed. p.m., Room B Dietz R. S. Craters, Cratering and Tektites, Wed. p.m., Room B Dittrich B. Primary and Secondary SNC ... , Mon. a.m., Room B Dobrovolskis A. R. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Donahue D. J. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Dragovitsch P. Primary and Secondary SNC ... , Mon. a.m., Room B Eakin P. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A EbiharaM. Ordinary Chondrites, Thu. p.m., Room A Eisenhour D. D. Refractory Inclusions, Tue. p.m., Room A El Goresy A. Achondrite Stew, Tue. a.m., Room B El Goresy A. Enstatite Chondrites and Aubrites, Mon. p.m., Room B El Goresy A. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A El Goresy A. Refractory Inclusions, Tue. p.m., Room A Elmore D. Iron Meteorites, Thu. p.m., Room B Endress M. Carbonaceous Chondrites, Fri. a.m., Room B Englert P. A. J. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Ericksson G. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Esat T. Iron Meteorites, Thu. p.m., Room B Espinasse S. Carbonaceous Chondrites, Fri. a.m., Room B Esser B. K. Iron Meteorites, Thu. p.m., Room B Eugster 0. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Eugster 0. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Fallick A. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Fang H. Refractory Inclusions, Tue. p.m., Room A Fegley B. Jr. Interstellar/Meteorite ... II., Wed. a.m., Room B xii

Feigelson E. D. Interstellar/ Meteorite Connections I. oo., Wed. a.m., Room A Filges D. Primary and Secondary SNC oo., Mon. a.m., Room B Fink D. Carbonaceous Chondrites, Fri. a.m., Room B Fink D. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Finkel R. C. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Fiske P. S. Craters, Cratering and Tektites, Wed. p.m., Room B Fleming R. H. IDPs: LDEF, Stratosphere, Greenland oo., Thu. a.m., Room A Floss C. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Flynn G. J. IDPs: LDEF, Stratosphere, Greenland oo., Thu. a.m., Room A Foote J. IDPs: LDEF, Stratosphere, Greenland ..., Thu. a.m., Room A Formisano V. IDPs: LDEF, Stratosphere, Greenland ...., Thu. a.m., Room A Franchi I. A. Interstellar/ Meteorite Connections I. oo., Wed. a.m., Room A Fredriksson K. Chondrules, Thu. a.m., Room B Frenklach M. Interstellar/Meteorite Connections I. oo., Wed. a.m., Room A Freund F. Interstellar/Meteorite Connections I. oo., Wed. a.m., Room A Gaffey M. J. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Galer S. J. G. Achondrite Stew, Tue. a.m., Room B Garrison D. H. Achondrite Stew, Tue. a.m., Room B Garrison D. H. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Gault D. E. Craters, Cratering and Tektites, Wed. p.m., Room B Gault D. E. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Geiger T. Carbonaceous Chondrites, Fri. a.m., Room B GeigerT. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Geiss J. Interstellar/Meteorite oo, II. (cont'd), Wed. p.m., Room A Gibson E. K. Ordinary Chondrites, Thu. p.m., Room A Gibson E. K. Primary and Secondary SNC ..., Mon. a.m., Room B Gilabert E. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Gilmour I. Interstellar/Meteorite Connections I. oo., Wed. a.m., Room A Gilmour J. D. IDPs: LDEF, Stratosphere, Greenland oo·· Thu. a.m., Room A Goldstein J. I. Iron Meteorites, Thu. p.m., Room B Gooding J. L. Primary and Secondary SNC oo·· Mon. a.m., Room B Gopel C. Nebula and Parent Body Processing II, Tue. a.m., Room A Goswami J. N. Interstellar/Meteorite Connections I. oo., Wed. a.m., Room A Goswami J. N. Refractory Inclusions, Tue. p.m., Room A Grady M. M. Carbonaceous Chondrites, Fri. a.m., Room B GradyM. M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B GrafTh. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Greenberg R. IDPs: LDEF, Stratosphere, Greenland oo·· Thu. a.m., Room A Greenwood R. C. Refractory Inclusions, Tue. p.m., Room A GrieveR. Craters, Cratering and Tektites, Wed. p.m., Room B Grossman J. N. Chondrules, Thu. a.m., Room B Grossman L. Refractory Inclusions, Tue. p.m., Room A Grund T. Carbonaceous Chondrites, Fri. a.m., Room B Guan Y. Craters, Cratering and Tektites, Wed. p.m., Room B Guha S. Interstellar/Meteorite oo, H., Wed. a.m., Room B Haack H. Iron Meteorites, Thu. p.m., Room B Haag R. A. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B HaagR. A. Primary and Secondary SNC ... , Mon. a.m., Room B Hall G. S. IDPs: LDEF, Stratosphere, Greenland oo., Thu. a.m., Room A Harper C. L. Nebula and Parent Body I (cont'd), Mon. p.m., Room A Harper C. L. Primary and Secondary SNC oo., Mon. a.m., Room B Harris D. W. IDPs: LDEF, Stratosphere, Greenland oo., Thu. a.m., Room A Hartmann D. H. Interstellar/Meteorite oo, II., Wed. a.m., Room B xiii

Hartmetz C. P. Primary and Secondary SNC ... , Mon. a.m., Room B Hartung J. Craters, Cratering and Tektites, Wed. p.m., Room B Harvey R. P. Antarctic Meteorites, Mon. a.m., Room A Harvey R. P. Primary and Secondary SNC ... , Mon. a.m., Room B Hashimoto A. Refractory Inclusions, Tue. p.m., Room A Hashizume K. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Hashizume K. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Haynes G. Interstellar/Meteorite Connections I .... , Wed. a.m., Room A Herbst T. Interstellar/ Meteorite Connections I .... , Wed. a.m., Room A Herpers U. Antarctic Meteorites, Mon. a.m., Room A Herpers U. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Herpers U. Primary and Secondary SNC ... , Mon. a.m., Room B Herzog G. F. Carbonaceous Chondrites, Fri. a.m., Room B Herzog G. F. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Herzog G. F. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Hewins R. H. Chondrules, Thu. a.m., Room B Hildebrand A. R. Cretaceous-Tertiary Impact(s), Wed. p.m., Room A Hill D. H. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Hill D. H. Primary and Secondary SNC ... , Mon. a.m., Room B Hofle H. C. Antarctic Meteorites, Mon. a.m., Room A Hofmann H. J. Antarctic Meteorites, Mon. a.m., Room A Hofmann H. J. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Hofmann H. J. Primary and Secondary SNC ... , Mon. a.m., Room B Hohenberg C. M. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A HondaM. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Hoppe P. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Horz F. Craters, Cratering and Tektites, Wed. p.m., Room B Horz F. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Horz F. Interstellar/Meteorite Connections I .... , Wed. a.m., Room A Howard W. M. Interstellar/Meteorite ... II., Wed. a.m., Room B Howell E. S. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A HuR. Ordinary Chondrites, Thu. p.m., Room A HuaX. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A HunekeJ. C. Iron Meteorites, Thu. p.m., Room B Huss G. R. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Hutcheon I. D. Achondrite Stew, Tue. a.m., Room B Hutcheon I. D. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Hutcheon I. D. Refractory Inclusions, Tue. p.m., Room A Hutchison R. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Hutchison R. Ordinary Chondrites, Thu. p.m., Room A Hutchison R. Refractory Inclusions, Tue. p.m., Room A Hutson M. L. Enstatite Chondrites and Aubrites, Mon. p.m., Room B HymanM. Carbonaceous Chondrites, Fri. a.m., Room B HymanM. Interstellar/Meteorite Connections I .... , Wed. a.m., Room A HymanM. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A ImamuraM. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Inoue M. Chondrules, Thu. a.m., Room B Ireland T. R. Achondrite Stew, Tue. a.m., Room B Ireland T. R. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Jakes P. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B James O. B. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Jehanno C. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Jessberger E. K. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A xiv

Jochum K. P. Refractory Inclusions, Tue. p.m., Room A Jones B. D. Chondrules, Thu. a.m., Room B Jones J. H. Primary and Secondary SNC ... , Mon. a.m., Room B Jones R. H. Carbonaceous Chondrites, Fri. a.m., Room B Jull A. J. T. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Jull A. J. T. Ordinary Chondrites, Thu. p.m., Room A Jurewicz A. J. G. Primary and Secondary SNC ... , Mon. a.m., Room B Kagi H. Achondrite Stew, Tue. a.m., Room B Kallemeyn G. W. Carbonaceous Chondrites, Fri. a.m., Room B Kallemeyn G. W. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Karlsson H. R. Ordinary Chondrites, Thu. p.m., Room A Karlsson H. R. Primary and Secondary SNC ... , Mon. a.m., Room B KatoT. Craters, Cratering and Tektites, Wed. p.m., Room B Keil K. Chondrules, Thu. a.m., Room B KeilK. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Keil K. Nebula and Parent Body Processing II, Tue. a.m., Room A KeilK. Ordinary Chondrites, Thu. p.m., Room A Keller L. P. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Keller L. P. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Kennedy A. K. Achondrite Stew, Tue. a.m., Room B Kennedy A. Refractory Inclusions, Tue. p.m., Room A Kerridge J. F. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A KimJ. S. Ordinary Chondrites, Thu. p.m., Room A KimY. Ordinary Chondrites, Thu. p.m., Room A King E. A. Craters, Cratering and Tektites, Wed. p.m., Room B KleinJ. Carbonaceous Chondrites, Fri. a.m., Room B KleinJ. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Klinger J. Carbonaceous Chondrites, Fri. a.m., Room B Klock W. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Kobayashi K. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Koeberl C. Craters, Cratering and Tektites, Wed. p.m., Room B Koehler A. M. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Kolzer G. Carbonaceous Chondrites, Fri. a.m., Room B Korotev R. L. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Korschinek G. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Kovalenko L. J. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Kracher A. Iron Meteorites, Thu. p.m., Room B Kring D. A. Primary and Secondary SNC ... , Mon. a.m., Room B KubikP. W. Antarctic Meteorites, Mon. a.m., Room A KunkM. Craters, Cratering and Tektites, Wed. p.m., Room B Kurat G. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Kushiro I. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Kyte F. T. Cretaceous-Tertiary Impact(s), Wed. p.m., Room A Langenhorst F. Craters, Cratering and Tektites, Wed. p.m., Room B Lanier A. B. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Laurance M. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A LavalR. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a:m., Room A Lavielle B. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Lavielle B. Ordinary Chondrites, Thu. p.m., Room A Lavielle B. Primary and Secondary SNC ... , Mon. a.m., Room B Le L. Primary and Secondary SNC ... , Mon. a.m., Room B Lebofsky L. A. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Lee M. R. Refractory Inclusions, Tue. p.m., Room A XV

Lee M.S. Chondrules, Thu. a.m., Room B Leenhouts J. M. Chondrules, Thu. a.m., Room B Lerner N. R. Interstellar/Meteorite Connections I. ... ,Wed. a.m., Room A Lewis R. S. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A LiZ. Ordinary Chondrites, Thu. p.m., Room A Lin Y. Enstatite Chondrites and Aubrites, Mon. p.m., Room B LinY. T. Refractory Inclusions, Tue. p.m., Room A Lindner L. Achondrite Stew, Tue. a.m., Room B Lindstrom D. J. Primary and Secondary SNC ... , Mon. a.m., Room B Lindstrom M. M. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Lipschutz M. E. Antarctic Meteorites, Mon. a.m., Room A Lipschutz M. E. Carbonaceous Chondrites, Fri. a.m., Room B Lipschutz M. E. Iron Meteorites, Thu. p.m., Room B Lipschutz M. E. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A LiuG. Craters, Cratering and Tektites, Wed. p.m., Room B LiuJ. Ordinary Chondrites, Thu. p.m., Room A Liu Y.-G. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Lodders K. Nebula and Parent Body Processing II, Tue. a.m., Room A Lofgren G. E. Chondrules, Thu. a.m., Room B Lofgren G. E. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Lohr H. P. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A LuJ. Chondrules, Thu. a.m., Room B LuJ. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B LuQ. Iron Meteorites, Thu. p.m., Room B Lugmair G. W. Achondrite Stew, Tue. a.m., Room B Lundberg L. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Liipke M. Primary and Secondary SNC ... , Mon. a.m., Room B Lyon I. C. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A MacPherson G. J. Refractory Inclusions, Tue. p.m., Room A Maechling C. R. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Mandeville J.-Cl. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Manhes G. Nebula and Parent Body Processing II, Tue. a.m., Room A Mardon A. Craters, Cratering and Tektites, Wed. p.m., Room B Mardon E. G. Craters, Cratering and Tektites, Wed. p.m., Room B Marti K. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Marti K. Ordinary Chondrites, Thu. p.m., Room A Masaitis V. L. Plenary: Medal Winner Presentations, Thu. p.m., Room A Maslowska H. Craters, Cratering and Tektites, Wed. p.m., Room B Mastracci F. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Masuda A. Achondrite Stew, Tue. a.m., Room B Masuda A. Iron Meteorites, Thu. p.m., Room B Masuda A. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Mathew K. J. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Matsuishi K. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Mayeda T. K. Carbonaceous Chondrites, Fri. a.m., Room B Mayeda T. K. Chondrules, Thu. a.m., Room B Mayeda T. K. Primary and Secondary SNC ... , Mon. a.m., Room B McCoy T. J. Chondrules, Thu. a.m., Room B McGee J. J. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B McHoneJ. F. Craters, Cratering and Tektites, Wed. p.m., Room B McKay D. S. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A McKay D. S. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B McKay G. Primary and Secondary SNC ... , Mon. a.m., Room B xvi

McSween H. Y. Jr. Primary and Secondary SNC ... , Mon. a.m., Room B McSween H. Y. Jr. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Melnik W. L. Craters, Cratering and Tektites, Wed. p.m., Room B Melosh H. J. Craters, Cratering and Tektites, Wed. p.m., Room B Mennella V. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Merenyi E. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Metzler K. Carbonaceous Chondrites, Fri. a.m., Room B Metzler K. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Meyer B.S. Interstellar/ Meteorite ... II., Wed. a.m., Room B Michel R. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Michel R. Primary and Secondary SNC ... , Mon. a.m., Room B Michel Th. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Middleton R. Carbonaceous Chondrites, Fri. a.m., Room B Middleton R. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Miller M. L. Ordinary Chondrites, Thu. p.m., Room A Miller R. Craters, Cratering and Tektites, Wed. p.m., Room B Mittlefehldt D. W. Achondrite Stew, Tue. a.m., Room B Mittlefehldt D. W. Craters, Cratering and Tektites, Wed. p.m., Room B Miura Y. Carbonaceous Chondrites, Fri. a.m., Room B Miura Y. Craters, Cratering and Tektites, Wed. p.m., Room B Miyamoto M. Achondrite Stew, Tue. a.m., Room B Morfin G. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Morgan W. A. Jr. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Morse A. D. Carbonaceous Chondrites, Fri. a.m., Room B Morse A. D. Enstatite Chondrites and Aubrites, Mon. p.m., Room B MuenowD. M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Murty S. V. S. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Myers B. Achondrite Stew, Tue. a.m., Room B Mysen B. O. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Mysen B. O. Refractory Inclusions, Tue. p.m., Room A Nagahara H. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Nagahara H. Refractory Inclusions, Tue. p.m., Room A Nagai H. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Nagao K. Carbonaceous Chondrites, Fri. a.m., Room B Nagel H.-J. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Nakamura N. Chondrules, Thu. a.m., Room B Nakamura T. Nebula and Parent Body Processing II, Tue. a.m., Room A Nehru C. E. Chondrules, Thu. a.m., Room B Neuenschwander J. Interstellar/ Meteorite ... II. (cont'd), Wed. p.m., Room A Nichols R. H. Jr. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Niedermann S. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Niedermann S. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Niemeyer S. Iron Meteorites, Thu. p.m., Room B NierA. O. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Nishiizumi K. Antarctic Meteorites, Mon. a.m., Room A Nishiizumi K. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Nolan M. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Nyquist L. E. Nebula and Parent Body ... I (cont'd), Mort. p.m., Room A Nyquist L. E. Primary and Secondary SNC ... , Mon. a.m., Room B Obradovic M. Interstellar/Meteorite ... II., Wed. a.m., Room B Okamoto M. Craters, Cratering and Tektites, Wed. p.m., Room B Oosterbaan W. A. Achondrite Stew, Tue. a.m., Room B Ostro S. J. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A xvii

Ott U. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Ouyang Z. Craters, Cratering and Tektites, Wed. p.m., Room B OzimaM. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A PalmaR. L. Carbonaceous Chondrites, Fri. a.m., Room B Palme H. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Palme H. Carbonaceous Chondrites, Fri. a.m., Room B Palme H. Chondrules, Thu. a.m., Room B Palme H. Nebula and Parent Body Processing II, Tue. a.m., Room A Palme H. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Palme H. Refractory Inclusions, Tue. p.m., Room A Paresce F. Nebula and Parent Body Processing II, Tue. a.m., Room A Pedroni A. Ordinary Chondrites, Thu. p.m., Room A Pellas P. Ordinary Chondrites, Thu. p.m., Room A Pellas P. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Pelton A. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Pernicka E. Craters, Cratering and Tektites, Wed. p.m., Room B Pernicka E. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Perron C. Ordinary Chondrites, Thu. p.m., Room A Petaev M.l. Achondrite Stew, Tue. a.m., Room B Peterson E. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Pieters C. M. Achondrite Stew, Tue. a.m., Room B Pieters C. M. Antarctic Meteorites, Mon. a.m., Room A Pillinger C. T. Carbonaceous Chondrites, Fri. a.m., Room B Pillinger C. T. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Pillinger C. T. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Pillinger C. T. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Pillinger C. T. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Pillinger C. T. Ordinary Chondrites, Thu. p.m., Room A Pillinger C. T. Primary and Secondary SNC ... , Mon. a.m., Room B Podolak M. Chondrules, Thu. a.m., Room B Podosek F. A. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Podosek F. A. Refractory Inclusions, Tue. p.m., Room A Presper T. Chondrules, Thu. a.m., Room B Prinz M. Carbonaceous Chondrites, Fri. a.m., Room B Prinz M. Chondrules, Thu. a.m., Room B Prinz M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Prinz M. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Prinz M. Ordinary Chondrites, Thu. p.m., Room A Prinz M. Refractory Inclusions, Tue. p.m., Room A Prombo C. A. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Prombo C. A. Refractory Inclusions, Tue. p.m., Room A PunA. Chondrules, Thu. a.m., Room B Radicati di Brozolo F. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Raisbeck G. M. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Rao M. N. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Rasmussen K. L. Iron Meteorites, Thu. p.m., Room B Read W. F. Craters, Cratering and Tektites, Wed. p.m., Room B ReedS. J. B. Ordinary Chondrites, Thu. p.m., Room A Reedy R. C. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Reimold W. Craters, Cratering and Tektites, Wed. p.m., Room B Reynolds R. Chondrules, Thu. a.m., Room B Richardt S. Primary and Secondary SNC ... , Mon. a.m., Room B Rickey F. A. Iron Meteorites, Thu. p.m., Room B xviii

Rietmeijer F. J. M. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Rosel R. Primary and Secondary SNC ... , Mon. a.m., Room B Rotaru M. Carbonaceous Chondrites, Fri. a.m., Room B RoweM. W. Carbonaceous Chondrites, Fri. a.m., Room B RoweM. W. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A RoweM. W. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Roy-Barman M. Iron Meteorites, Thu. p.m., Room B RubinA. E. Chondrules, Thu. a.m., Room B RubinA. E. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Rubin A. E. Nebula and Parent Body Processing II, Tue. a.m., Room A Russell S. S. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A RussellS. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Riiter E. Primary and Secondary SNC ... , Mon. a.m., Room B Ruzicka A. Achondrite Stew, Tue. a.m., Room B Ruzicka A. Refractory Inclusions, Tue. p.m., Room A Ryder G. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Saito J. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Sandford S. A. Interstellar/Meteorite Connections I .... , Wed. a.m., Room A Sargent A. Nebula and Parent Body Processing I, Mon. a.m., Room A SaxtonJ. M. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Schlutter D. J. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Schmidt G. Craters, Cratering and Tektites, Wed. p.m., Room B Schmitt B. Carbonaceous Chondrites, Fri. a.m., Room B Schmitt R. A. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Schnatz-Buttgen M. Primary and Secondary SNC ... , Mon. a.m., Room B Schultz L. Achondrite Stew, Tue. a.m., Room B Schultz L. Carbonaceous Chondrites, Fri. a.m., Room B Schultz L. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Schultz P. Chondrules, Thu. a.m., Room B Schultz P. H. Craters, Cratering and Tektites, Wed. p.m., Room B Schultz P. H. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B ScoreR. Antarctic Meteorites, Mon. a.m., Room A Scott E. R. D. Nebula and Parent Body Processing II, Tue. a.m., Room A Sears D. W. G. Antarctic Meteorites, Mon. a.m., Room A Sears D. W. G. Chondrules, Thu. a.m., Room B Sears D. W. G. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Sears D. W. G. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Sears H. Antarctic Meteorites, Mon. a.m., Room A Sears H. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B See T. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A SeeT. H. Craters, Cratering and Tektites, Wed. p.m., Room B Sen S. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B SharmaP. Antarctic Meteorites, Mon. a.m., Room A Sheel V. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Sheng Y. J. Refractory Inclusions, Tue. p.m., Room A Shih C.-Y. Primary and Secondary SNC ... , Mon. a.m., Room B Signer P. Primary and Secondary SNC ... , Mon. a.m., Room B Simms P. C. Iron Meteorites, Thu. p.m., Room B Simon C. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A SimonS. B. Refractory Inclusions, Tue. p.m., Room A SimonoffG. N. Primary and Secondary SNC ... , Mon. a.m., Room B Sisterson J. M. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Skinner W. R. Chondrules, Thu. a.m., Room B xix

SmithS. P. Iron Meteorites, Thu. p.m., Room B Socki R. A. Ordinary Chondrites, Thu. p.m., Room A Socki R. A. Primary and Secondary SNC ... , Mon. a.m., Room B Spettel B. Carbonaceous Chondrites, Fri. a.m., Room B Spettel B. Chondrules, Thu. a.m., Room B Spettel B. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Spettel B. Refractory Inclusions, Tue. p.m., Room A Srinivasan G. Refractory Inclusions, Tue. p.m., Room A Stadermann F. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Stansberry J. Craters, Cratering and Tektites, Wed. p.m., Room B Stephan T. Refractory Inclusions, Tue. p.m., Room A Stepinski T. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Stewart B. W. Achondrite Stew, Tue. a.m., Room B Stiiffler D. Nebula and Parent Body Processing II, Tue. a.m., Room A Sugiura N. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Sugiura N. Interstellar/ Meteorite Connections I. ... ,Wed. a.m., Room A SuttonS. R. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Swan P. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Swindle T. D. Achondrite Stew, Tue. a.m., Room B Symes S. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Takahashi K. Achondrite Stew, Tue. a.m., Room B Takahashi K. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Takaoka N. Carbonaceous Chondrites, Fri. a.m., Room B Takeda H. Achondrite Stew, Tue. a.m., Room B Takeda H. Nebula and Parent Body Processing II, Tue. a.m., Room A Takeda H. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Thakur A. N. Ordinary Chondrites, Thu. p.m., Room A ThielK. Carbonaceous Chondrites, Fri. a.m., Room B Thomas K. L. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Tielens A. G. G. M. Interstellar/ Meteorite Connections I. ... , Wed. a.m., Room A Tomeoka K. Nebula and Parent Body Processing II, Tue. a.m., Room A Traxel K. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Treiman A. H. Primary and Secondary SNC ... , Mon. a.m., Room B Turner G. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Ulyanov A. A. Refractory Inclusions, Tue. p.m., Room A Unger L. Enstatite Chondrites and Aubrites, Mon. p.m., Room B van de Wateren D. W. Antarctic Meteorites, Mon. a.m., Room A van der Borg K. Achondrite Stew, Tue. a.m., Room B Vassent B. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Verchovsky A. Interstellar/ Meteorite ... II. (cont'd), Wed. p.m., Room A Vickery A. M. Craters, Cratering and Tektites, Wed. p.m., Room B Vogt S. Carbonaceous Chondrites, Fri. a.m., Room B Vogt S. Iron Meteorites, Thu. p.m., Room B Vogt S. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Wacker J. F. Antarctic Meteorites, Mon. a.m., Room A Wadhwa M. Primary and Secondary SNC ... , Mon. a.m., Room B Wagstaff J. Primary and Secondary SNC ... , Mon. a.m., Room B Walker R. M. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Wang D. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Wang D. Ordinary Chondrites, Thu. p.m., Room A Wang H. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Wang S. Carbonaceous Chondrites, Fri. a.m., Room B Warren J. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A XX

Warren P. H. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Wasserburg G. J. Achondrite Stew, Tue. a.m., Room B W asserburg G. J. Refractory Inclusions, Tue. p.m., Room A WassonJ. T. Chondrules, Thu. a.m., Room B Wasson J. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Weber H. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Weber H. Primary and Secondary SNC ... , Mon. a.m., Room B Weber H. W. Achondrite Stew, Tue. a.m., Room B Weber H. W. Carbonaceous Chondrites, Fri. a.m., Room B Weber H. W. Ordinary Chondrites, Thu. p.m., Room A Weinbruch S. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Weisberg M. K. Carbonaceous Chondrites, Fri. a.m., Room B Weisberg M. K. Chondrules, Thu. a.m., Room B Weisberg M. K. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Weisberg M. K. Refractory Inclusions, Tue. p.m., Room A Welten K. C. Achondrite Stew, Tue. a.m., Room B Wentworth S. J. Primary and Secondary SNC ... , Mon. a.m., Room B Wetherill G. W. Nebula and Parent Body Processing II, Tue. a.m., Room A Wetherill G. W. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Wieler R. Primary and Secondary SNC ... , Mon. a.m., Room B Wiesmann H. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Wiesmann H. Primary and Secondary SNC ... , Mon. a.m., Room B Williams D. B. Iron Meteorites, Thu. p.m., Room B Wilson L. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Wlotzka F. Chondrules, Thu. a.m., Room B WolfS. F. Antarctic Meteorites, Mon. a.m., Room A Wolfli w. Antarctic Meteorites, Mon. a.m., Room A Wolfli w. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Wolfli w. Primary and Secondary SNC ... , Mon. a.m., Room B WoodJ. A. Chondrules, Thu. a.m., Room B Wright I. P. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Wright I. P. Primary and Secondary SNC ... , Mon. a.m., Room B WuS. Craters, Cratering and Tektites, Wed. p.m., Room B XiaoX. Carbonaceous Chondrites, Fri. a.m., Room B XieX. Ordinary Chondrites, Thu. p.m., Room A Yamaguchi A. Achondrite Stew, Tue. a.m., Room B Yanai K. Achondrite Stew, Tue. a.m., Room B Yates P. D. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A YiouF. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A ·Zahnle K. Nebula and Parent Body Processing II, Tue. a.m., Room A Zanda B. Primary and Secondary SNC ... , Mon. a.m., Room B Zare R.N. Interstellar/Meteorite Connections I .... , Wed. a.m., Room A Zashu S. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Zaslavskaya N. I. Achondrite Stew, Tue. a.m., Room B Zhang D. Ordinary Chondrites, Thu. p.m., Room A ZhangJ. Craters, Cratering and Tektites, Wed. p.m., Room B ZhangJ. Iron Meteorites, Thu. p.m., Room B Zhang Y. Craters, Cratering and Tektites, Wed. p.m., Room B Zhou L. Cretaceous-Tertiary Impact(s), Wed. p.m., Room A Zhou L. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Zhou Y. Q. Craters, Cratering and Tektites, Wed. p.m., Room B Zinner E. K. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Zinner E. K. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A xxi

Zinner E. K. Refractory Inclusions, Tue. p.m., Room A Zinner E. K. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Zinner E. K. lOPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Zolensky M. E. Carbonaceous Chondrites, Fri. a.m., Room B Zolensky M. E. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A xxii

SPEAKER INDEX

Albrecht A. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Alexander C. M. O'D. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Allamandola L. J. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A AmariS. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A AshR. D. Carbonaceous Chondrites, Fri. a.m., Room B Backman D. E. Nebula and Parent Body Processing II, Tue. a.m., Room A Bajt S. Iron Meteorites, Thu. p.m., Room B Basri G. Nebula and Parent Body Processing II, Tue. a.m., Room A Bell J. F. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Benoit P. H. Antarctic Meteorites, Mon. a.m., Room A Bhandari N. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Birck J. L. Iron Meteorites, Thu. p.m., Room B Bishop J. Antarctic Meteorites, Mon. a.m., Room A Blake D. Interstellar/Meteorite Connections I .... , Wed. a.m., Room A BlanderM. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Bogard D. D. Achondrite Stew, Tue. a.m., Room B Bohor B. Cretaceous-Tertiary Impact(s), Wed. p.m., Room A Borg J. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Bourcier W. L. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Bradley J. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Brearley A. J. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Brearley A. J. Ordinary Chondrites, Thu. p.m., Room A Bremer K. Antarctic Meteorites, Mon. a.m., Room A Britt D. T. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Brownlee D. E. Thu. a.m., Room A Bukovanska M. Achondrite Stew, Tue. a.m., Room B Bunch T. E. Chondrules, Thu. a.m., Room B Buseck P.R. Carbonaceous Chondrites, Fri. a.m., Room B Caffee M. W. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Caillet C. Refractory Inclusions, Tue. p.m., Room A Casanova I. Iron Meteorites, Thu. p.m., Room B Cassen P. Nebula and Parent Body Processing I, Mon. a.m., Room A Chapman C. R. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Chen Y. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Clayton D. D. Plenary: Medal Winner Presentations, Thu. p.m., Room A Colangeli L. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Connolly H. C. Jr. Chondrules, Thu. a.m., Room B Crozaz G. Enstatite Chondrites and Aubrites, Mon. p.m., Room B CuzziJ. N. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Davis A.M. Refractory Inclusions, Tue. p.m., Room A DeHartJ. M. Chondrules, Thu. a.m., Room B Delaney J. S. Achondrite Stew, Tue. a.m., Room B Delisle G. Antarctic Meteorites, Mon. a.m., Room A Dietz R. Craters, Cratering and Tektites, Wed. p.m., Room B Ebihara M. Ordinary Chondrites, Thu. p.m., Room A Eisenhour D. D. Refractory Inclusions, Tue. p.m., Room A Esat T. Iron Meteorites, Thu. p.m., Room B Eugster O. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Fegley B. Jr. Interstellar/Meteorite ... II., Wed. a.m., Room B Floss C. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Flynn G. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A xxiii

Fredriksson K. Chondrules, Thu. a.m., Room B Gaffey M. J. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Garrison D. H. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Gault D. E. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Geiger T. Carbonaceous Chondrites, Fri. a.m., Room B Gibson E. K. Jr. Ordinary Chondrites, Thu. p.m., Room A Gilmour I. Interstellar/Meteorite Connections I. ... ,Wed. a.m., Room A Goldstein J. I. Iron Meteorites, Thu. p.m., Room B Gooding J. Primary and Secondary SNC ... , Mon. a.m., Room B Gopel C. Nebula and Parent Body Processing II, Tue. a.m. Room A Goswami J. N. Refractory Inclusions, Tue. p.m., Room A Grady M. M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B GrafTh. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Greenwood R. C. Refractory Inclusions, Tue. p.m., Room A Grossman J. N. Chondrules, Thu. a.m., Room B Grossman L. Refractory Inclusions, Tue. p.m., Room A Haack H. Iron Meteorites, Thu. p.m., Room B Harper C. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Hartmann D. H. Interstellar/Meteorite ... II., Wed. a.m., Room B Hartmetz C. P. Primary and Secondary SNC ... , Mon. a.m., Room B Hartung J. Craters, Cratering and Tektites, Wed. p.m., Room B Harvey R. P. Primary and Secondary SNC ... ,Mon. a.m., Room B Hashimoto A. Refractory Inclusions, Tue. p.m., Room A Hashizume K. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Herzog G. F. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Hill D. H. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B HondaM. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Hoppe P. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Horz F. Craters, Cratering and Tektites, Wed. p.m., Room B Howard W. M. Interstellar/Meteorite ... II., Wed. a.m., Room B HuaX. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Huss G. R. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Hutcheon I. D. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Hutchison R. Ordinary Chondrites, Thu. p.m., Room A Hutson M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B HymanM. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Ireland T. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Jakes P. Lunar Origins, Processes and Meteorites, Wed. am., Room B Jessberger E. K. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Jochum K. P. Refractory Inclusions, Tue. p.m., Room A Jones R. H. Carbonaceous Chondrites, Fri. a.m., Room B Jurewicz A. J. G. Primary and Secondary SNC ... , Mon. a.m., Room B Kagi H. Achondrite Stew, Tue. a.m., Room B Kallemeyn G. Carbonaceous Chondrites, Fri. am., Room B Karlsson H. R. Primary and Secondary SNC ... , Mon. a.m., Room B KeilK. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Keller L. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Kennedy A. Achondrite Stew, Tue. a.m., Room B Kerridge J. F. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A KimJ.S. Ordinary Chondrites, Thu. p.m., Room A King E. A. Craters, Cratering and Tektites, Wed. p.m., Room B Klein J. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Klinger J. Carbonaceous Chondrites, Fri. a.m., Room B xxiv

Koeberl C. Craters, Cratering and Tektites, Wed. p.m., Room B Korotev R. L. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Kracher A. Iron Meteorites, Thu. p.m., Room B Kring D. A. Primary and Secondary SNC ... , Mon. a.m., Room B Kyte F. T. Cretaceous-Tertiary Impact(s), Wed. p.m., Room A Langenhorst F. Craters, Cratering and Tektites, Wed. p.m., Room B Lavielle B. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Lebofsky L. A. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Lee M. R. Refractory Inclusions, Tue. p.m., Room A Lee M.S. Chondrules, Thu. a.m., Room B LernerN. R. Interstellar/Meteorite Connections I .... , Wed. a.m., Room A Lewis R. S. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A LinY. T. Refractory Inclusions, Tue. p.m., Room A Lindstrom D. Primary and Secondary SNC ... , Mon. a.m., Room B Lindstrom M. M. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Lipschutz M. E. Carbonaceous Chondrites, Fri. a.m., Room B Lipschutz M. E. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Lodders K. Nebula and Parent Body Processing II, Tue. a.m., Room A Lofgren G. E. Enstatite Chondrites and Aubrites, Mon. p.m., Room B LuJ. Chondrules, Thu. a.m., Room B LuQ. Iron Meteorites, Thu. p.m., Room B Lugmair G. W. Achondrite Stew, Tue. a.m., Room B Marti K. Ordinary Chondrites, Thu. p.m., Room A Masaitis V. L. Plenary: Medal Winner Presentations, Thu. p.m., Room A McCoyT.J. Chondrules, Thu. a.m., Room B McGeeJ. J. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B McKay D. S. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B McKay G. Primary and Secondary SNC ... , Mon. a.m., Room B McSween H. Y. Jr. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A MelnikW. L. Craters, Cratering and Tektites, Wed. p.m., Room B Melosh H. J. Craters, Cratering and Tektites, Wed. p.m., Room B Metzler K. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Michel R. Primary and Secondary SNC ... , Mon. a.m., Room B Mittlefehldt D. W. Achondrite Stew, Tue. a.m., Room B Miura Y. Craters, Cratering and Tektites, Wed. p.m., Room B Morgan W. A. Jr. Interstellar/Meteorite Connections I .... , Wed. a.m., Room A Murty S. V. S. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Nagahara H. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A Nakamura N. Chondrules, Thu. a.m., Room B N:akamura T. Nebula and Parent Body Processing II, Tue. a.m., Room A Nehru C. E. Chondrules, Thu. a.m., Room B Nichols R. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Niedermann S. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Niemeyer S. Iron Meteorites, Thu. p.m., Room B NierA. O. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Nishiizumi K. Antarctic Meteorites, Mon. a.m., Room A Nolan M. lDPs: LDEF, Stratosphere, Greenland .•. , Thu. a.m., Room A Nyquist L. E. Primary and Secondary SNC ... , Mon. a.m., Room B Obradovic M. Interstellar/Meteorite ... II., Wed. a.m., Room B Ostro S. J. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Ott U. Interstellar/ Meteorite ... II. (cont'd), Wed. p.m., Room A OzimaM. Interstellar I Meteorite ... II. (cont'd), Wed. p.m., Room A Paime H. Nebula and Parent Body ... I (cont'd), Mon. p.m., Room A XXV

Pedroni A. Ordinary Chondrites, Thu. p.m., Room A Pellas P. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A Peterson E. Interstellar/Meteorite Connections I. ... ,Wed. a.m., Room A Podosek F. A. Refractory Inclusions, Tue. p.m., Room A Presper T. Chondrules, Thu. a.m., Room B Prinz M. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Prombo C. A. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Reedy R. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Rotaru M. Carbonaceous Chondrites, Fri. a.m., Room B RubinA. E. Nebula and Parent Body Processing II, Tue. a.m., Room A RussellS. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Ruzicka A. Achondrite Stew, Tue. a.m., Room B Ryder G. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Sandford S. Interstellar/Meteorite Connections I. ... , Wed. a.m., Room A Sargent A. Nebula and Parent Body Processing I, Mon. a.m., Room A Saxton J. M. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Schmidt G. Craters, Cratering and Tektites, Wed. p.m., Room B Schultz L. Carbonaceous Chondrites, Fri. a.m., Room B Schultz P. H. Craters, Cratering and Tektites, Wed. p.m., Room B Scott E. R. D. Nebula and Parent Body Processing II, Tue. a.m., Room A Sears D. W. G. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B ShengY. J. Refractory Inclusions, Tue. p.m., Room A Sisterson J. M. Meteorite Exposure Ages and Sizes, Tue. p.m., Room B Skinner W. R. Chondrules, Thu. a.m., Room B Stadermann F. IDPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A StOffler D. Nebula and Parent Body Processing II, Tue. a.m., Room A SwindleT. Achondrite Stew, Tue. a.m., Room B Symes S. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Takahashi K. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Takaoka N. Carbonaceous Chondrites, Fri. a.m., Room B Takeda H. Achondrite Stew, Tue. a.m., Room B Thakur A. N. Ordinary Chondrites, Thu. p.m., Room A Thiel K. Carbonaceous Chondrites, Fri. a.m., Room B Treiman A. H. Primary and Secondary SNC ... , Mon. a.m., Room B Verchovsky A. Interstellar/Meteorite ... II. (cont'd), Wed. p.m., Room A Vickery A. M. Craters, Cratering and Tektites, Wed. p.m., Room B Wacker J. F. Antarctic Meteorites, Mon. a.m., Room A WadhwaM. Primary and Secondary SNC ... , Mon. a.m., Room B Warren P. H. Lunar Origins, Processes and Meteorites, Wed. a.m., Room B Wasson J. Enstatite Chondrites and Aubrites, Mon. p.m., Room B Weisberg M. K. Carbonaceous Chondrites, Fri. a.m., Room B Welten K. C. Achondrite Stew, Tue. a.m., Room B Wetherill G. W. Nebula and Parent Body Processing II, Tue. a.m., Room A Wetherill G. W. S Asteroids Are Not Ordinary Chondrites?, Fri. a.m., Room A WolfS. F. Antarctic Meteorites, Mon. a.m., Room A Wood J. A. Chondrules, Thu. a.m., Room B Yamaguchi A. Achondrite Stew, Tue. a.m., Room B Yanai K. Achondrite Stew, Tue. a.m., Room B YiouF. lOPs: LDEF, Stratosphere, Greenland ... , Thu. a.m., Room A Zahnle K. Nebula and Parent Body Processing II, Tue. a.m., Room A Zhou Y. Craters, Cratering and Tektites, Wed. p.m., Room B Zinner E. Interstellar/ Meteorite ... II. (cont'd), Wed. p.m., Room A Zolensky M. E. Carbonaceous Chondrites, Fri. a.m., Room B The Meteoritical Society appreciates the financial support provided to this meeting by the following sponsors. VG PLASMAQUAD ICP-MS FlsoNSInstruments

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