Lunar and Planetary Institute






Twelfth Lunar and Planetary Science Conference

TABLE OF CONTENTS

no.

The Moon io and Serendipity
I. Adler, L. I. Yin, G. Coyle, T. Tsang
  1001

FO2 Estimates in 14 Mesosiderites from Silicate-Iron Equilibria of Proposed Parent Melts
W. N. Agosto
  1002

Where do we go from here in lunar research? Results of an opinion poll
A. L. Albee, R. A. Preston
  1003

Measurement of Small Quantities of Nitrogen by Neutron Activation
V. A. Alexeev, A. I. Ivliev, A. K. Lavrukhina
  1004

Electromagnetic Effects and the Structure of the Saturnian Rings
H. Alfven
  1005

Martian Soil and Terrestrial Palagonite
C. C. Allen, J. L. Gooding, M. Jercinovic, K. Keil
  1006

Hydrothermally Altered Impact Melt from Brent and Ries Craters
C. C. Allen, J. L. Gooding, K. Keil
  1007

Compositional Deviations in Lunar Pyroxenes: Analytical Error or Non-Stoichiometry
D. J. Andersen, D. H. Lindsley
  1008

Regional Chemical Setting of the Apollo 16 Landing Site and the Importance of the Kant Plateau
C. G. Andre, F. El-Baz
  1009

The Allende Pink Angel: its Mineralogy, Petrology and the Constraints of its Genesis
J. T. Armstrong, G. J. Wasserburg
  1010

Diaplectic Glass and Fusion-Formed Glass: Comparative Studies on Shocked Anorthosite from Manicouagan Crater, Canada
J. Arndt, I. Gonzalez-Cabeza
  1011

Effects of Lateral Resolution on the Interpretability of Geologic Features Sampled by the Pioneer-Venus Altimeter
R. E. Arvidson
  1012

Tentative Speculations on Lunar Sample Transport
M. G. Austin, B. R. Hawke
  1013

Gabbroic Anorthosite Impact Cratering Time Dependent Z Flow Fields for Two Different Impact Energies
M. G. Austin, J. M. Thomsen, D. L. Orphal, W. F. Borden, S. A. Larson, P. H. Schultz
  1014

Transient Cavity Calculations of Centrifuge Cratering Experiments at Two Different Values of Gravity
M. G. Austin, J. M. Thomsen, S. F. Ruhl
  1015

The Metal Chloride and Elemental Sulfur Condensates in the Venusian Troposphere - is it Possible?
V. L. Barsukov, I. L. Khodakovsky, V. P. Volkov, Yu. I. Sidorov, V. A. Dorofeeva, N. E. Andreeva
  1016

Azimuthal Variations in the Structure of Saturn's Rings
J. A. Bastin
  1017

On the Solar Wind Element Content and the Bulk Chemical Composition of Lunar Soils
A. Basu
  1018

Constraints on the Use of Aml Diagrams as a Tool to Monitor the Mineralogical Maturation of Lunar Regolith
A. Basu, S. A. Griffiths, D. S. McKay, G. Nace
  1019

The Temperature Profile of Venus Computed Using the Thermal Pressure, Pth = at + B
J. R. Baumgardner, O. L. Anderson
  1020

Silicon and Oxygen Isotopes in Some Selected Allende Inclusions
R. H. Becker, S. Epstein
  1021

Reiner Gamma: Preliminary Results from Telescopic Remote Sensing
J. F. Bell, B. R. Hawke
  1022

Induced Radioactivity, Tracks and Rare Gas Studies in South Ray Crater Rocks
N. Bhandari, M. B. Potdar, P. N. Shukla
  1023

Accumulation of Solar Wind Effects in Lunar Dust Grains: a Reappraisal of Solar Wind Simulation Experiments
J. P. Bibring, J. Borg, J. C. Dran, Y. Langevin, M. Maurette, J. C. Petit, F. Rocard
  1024

Automated Classification of Lunar Spectral Reflectance Data
M. J. Bielefeld, C. M. Pieters
  1025

Could Mixing of "pristine" Rocks have Produced the Observed Suite of Highland Rocks?
A. B. Binder
  1026

Thermoelastic Stress and Tectonic Evidence in Support of an Initially Totally Molten Moon - or, the "magma Ocean" was 1738KM Deep
A. B. Binder
  1027

Thermal Metamorphism of Feldspar Clasts in Impact Melt Rocks from Lappajarvi Crater, Finland
A. Bischoff, D. Stoffler
  1028

Leighton Gas-Rich Chondrite: Trace Element Contents and Mineralogy/petrology of Selected Inclusions
S. Biswas, H. Y. McSween, M. E. Lipschutz
  1029

Remnants from the Ancient Mare Crust Iii: Norite 78236
D. P. Blanchard, G. A. McKay
  1030

Electron Microscopic Observations of Micron-Sized Lunar Soil
G. E. Blanford, D. S. McKay, G. Nace, I. D. R. MacKinnon
  1031

Partitioning of Trace Elements among Coexisting Opaque Oxides in Apollo 17 Basalts Using a Proton Probe Microanalyzer
H. Blank, R. Nobiling, K. Traxel, A. El Goresy
  1032

Resetting of 40AR/39AR Ages in Suevite Ejecta from the Ries Crater
D. D. Bogard, F. Horz, P. Johnson, D. Stoffler
  1033

Depositional and Irradiational History of the 15008 Core
D. D. Bogard, R. V. Morris, P. Johnson, H. V. Lauer
  1034

Volatile Components in the Lunar Magmatic Processes
O. A. Bogatikov, D. I. Frikh-Khar, N. A. Ashikhmina, Yu. P. Dikov, E. E. Lazko, E. V. Sweshnikova
  1035

Accessory Minerals in North Ray Crater Breccias, Apollo 16
R. Borchardt, D. Stoffler
  1036

Shock-Release of Vapor from Calcite
M. B. Boslough, J. Vizgirda, T. J. Ahrens
  1037

Condensation of Refractory Lithophile Trace Elements in the Solar Nebula and in Supernovae
W. V. Boynton, C. C. Cunningham
  1038

The Evolution of Multi-Ringed Basins: Cooling, Subsidence and Thermal Stress
S. R. Bratt, S. C. Solomon, J. W. Head
  1039

Roaldite, a New Nitride in Iron Meteorites
V. F. Buchwald, H. P. Nielsen
  1040

Inversion of Lunar Geophysical Data
W. R. Buck, M. N. Toksoz
  1041

ALHA 77005: Uranium Content of Phosphates and Thermoluminescence Studies
R. K. Bull, S. A. Durrani
  1042

Troctolite 76535: a Study in the Preservation of Early Isotopic Records
M. Caffee, C. Hohenberg, B. Hudson
  1043

Thermal Evaporation of Giant Gaseous Protoplanets
A. G. W. Cameron, W. M. Decampli, P. H. Bodenheimer
  1044

Sm-Nd Age of Lunar Lherzolite 67667
R. W. Carlson, T. Tanaka, G. W. Lugmair
  1045

Meteorites from the Asteroid Belt: the Stony-Iron Connection
C. R. Chapman, R. Greenberg
  1046

Curium?
J. H. Chen, G. J. Wasserburg
  1047

Martian Regolith Properties: Viking IRTM Spectral Differencing Results
P. R. Christensen
  1048

Mega-Lahars (?) in the Elysium Region, Mars
E. H. Christiansen, R. Greeley
  1049

The Mercurian Regolith: an Evaluation of Impact Glass Production by Micrometeroid Impact
M. J. Cintala
  1050

Evolution of Volatiles during Regolith Maturation: U-Pb Ages of Parent Rocks
E. H. Cirlin, R. M. Housley
  1051

Magnetic Properties of Shergotty and Zagami Meteorites
S. M. Cisowski
  1052

Compositional Variations in the Hadley Apennine Region
P. E. Clark, B. R. Hawke
  1053

Ubiquitous Titanium Isotopic Anomalies
D. D. Clayton
  1054

Redox Processes in Chondrules and Chondrites
R. N. Clayton, T. K. Mayeda, J. L. Gooding, K. Keil, E. J. Olsen
  1055

Mars: Ground Ice Replenishment from a Subpermafrost Groundwater System
S. M. Clifford
  1056

A Model for the Removal and Subsurface Storage of a Primitive Martian Ice Sheet
S. M. Clifford
  1057

A Study of the Makoia C3(V) Carbonaceous Chondrite and the Origins of Cai's
R. Cohen
  1058

The Olympus Mons Paradox: why Hasn't the Martian Lithosphere Failed Under the Load?
R. P. Comer, S. C. Solomon
  1059

Miniregoliths II: Anatomy of Lunar Surface Soil
G. M. Comstock
  1060

Dark-Ray Craters on Ganymede
J. Conca
  1061

Possible terrestrial analogs of Vahalla and other ripple-ring basins, Multi-ring Basins
C. A. Wood
  1062

An io Thermal Model with Intermittent Volcanism
G. J. Consolmagno
  1063

Can a Geophysically Reasonable Moon Make Mare Basalts?
G. J. Consolmagno, J. M. Harrigan, W. R. Buck
  1064

On the Formation of Regular Satellites of Giant Planets
A. Coradini, C. Federico, G. Magni
  1065

Non-Terrestrial Materials (ntm's) Utilization
D. R. Criswell
  1066

Cratering on Ganymede and Callisto: Comparisons with the Terrestrial Planets
S. K. Croft
  1067

Hypervelocity Impact Craters in Icy Media
S. K. Croft
  1068

The Modification Stage of Simple Craters
S. K. Croft
  1069

On the Origin of Pit Craters
S. K. Croft
  1070

Avoiding Close Encounters: Collisional Evolution of Trojan Asteroids
D. R. Davis, S. J. Weidenschilling
  1071

Lunar Nonelastic Scatter Iron Concentrations from Orbital Gamma-Ray Data: Analysis of Thermal Neutron Flux Depression by KREEP
P. A. Davis, M. J. Bielefeld
  1072

Selenographic Distribution of Apparent Crater Depths
R. A. de Hon
  1073

Metamorphism in Mesosiderites: Radical Chemical Changes in a Post-Igneous Silicate Regolith
J. S. Delaney, G. E. Harlow, M. Prinz, C. E. Nehru
  1074

A New Basalt Group from Howardites: Mineral Chemistry and Relationships with Basaltic Achondrites
J. S. Delaney, M. Prinz, C. E. Nehru, G. E. Harlow
  1075

Major-Element Chemistry of Apollo 11 Volcanic Glasses
J. W. Delano
  1076

Major-Element Composition of Volcanic Green Glasses from Apollo 14
J. W. Delano
  1077

Major-Element Compositions of High-Titanium Volcanic Glasses from Apollo 14
J. W. Delano
  1078

Glasses of Impact Origin from Apollo 11 and Apollo 12: Evidence for Volatile-Loss and Mare/highland Mixing
J. W. Delano, D. H. Lindsley, R. Rudowski
  1079

Mare Volcanic Glasses: a tale of Two Arrays
J. W. Delano, K. Livi
  1080

Zircon Saturation and REE Partition Coefficients in Lunar Basalts and Granites
J. E. Dickinson, P. C. Hess, M. J. Rutherford
  1081

Theory and Application of the Negative Branch of Polarization for Airless Planetary Objects
A. Dollfus, M. Wolff
  1082

Partitioning of SM Between Hibonite and Corundum and Silicate Melt
M. J. Drake
  1083

On the Differentiation of the Terrestrial Planets
M. J. Drake, C. J. Hostetler
  1084

On the Mobilization and Redistribution of AU and Other Siderophiles in Lunar Highland Materials
G. Dreibus, H. Palme, W. Rammensee, B. Spettel, H. Wanke
  1085

Temperature-Induced Spectral Variations of Lunar-Simulated Fe-Ti Silicate Glasses
M. D. Dyar, R. G. Burns
  1086

Plasma Synthesis of Carbonaceous Material with Noble Gas Tracers
M. Dziczkaniec, G. R. Lumpkin, K. Donohoe, S. Chang
  1087

Siderophile, Volatile, and Incompatible Trace Elements in Apollo Breccia 66095
M. Ebihara, R. Wolf, E. Anders
  1088

The "uweinat Desert" of Egypt, Libya and Sudan: a Fertile Field for Planetary Comparisons of Crater Forms
F. El-Baz
  1089

Sulfide-Rich Chondrule Rims in Bishunpur (L3) Chondrite: Types, Textures, Mineralogy and Genetic Implications
A. El Goresy, P. Ramdohr, E. R. Rambaldi
  1090

Irradiation Records of Acapulco and Other Meteorites Derived from 53MN and 26AL Measurements
P. Englert, U. Herpers, W. Herr
  1091

Martian Fretted Terrain
D. B. Eppler, M. C. Malin
  1092

Thorium in the Lunar Central Highlands
M. I. Etchegaray-Ramirez, E. L. Haines, A. E. Metzger
  1093

An In-Depth Study of Neon and Argon in Lunar Soil Plagioclases, Revisited: Implanted Solar Flare Noble Gases
Ph. Etique, P. Signer, R. Wieler
  1094

Chemical Abundances, Cosmic Ray Production Rates and Exposure History of Soils from 74001/2
O. Eugster, W. Kiesl, N. Grogler, P. Eberhardt, J. Geiss
  1095

Comparison of Spectral Reflectance Properties of Terrestrial and Martian Surfaces Determined from Landsat and Viking Orbiter Multispectral Images
D. L. Evans, J. B. Adams
  1096

Very Fine Iron in Apollo 16 Soils: Observations and Some Theoretical Aspects of Magnetic Response
A. E. Fallick, C. T. Pillinger, A. Stephenson
  1097

Variations in Thickness of Ganymede's Lithosphere Determined by Spacings of Lineations
J. H. Fink, R. C. Fletcher
  1098

Olivine Barometry: Application to Pressure Estimation for Terrestrial and Lunar Rocks
A. A. Finnerty, S. M. Rigden
  1099

14C Ages of Antarctic Meteorites and Ice and the Composition of the Air Trapped in the Ice
E. L. Fireman, T. Norris
  1100

Carbon and CARBON-14 in Lunar Soil 14163
E. L. Fireman, R. W. Stoenner
  1101

Granulometric and Chemical Compositions of Metallic Phase of Three Enstatite Chondrites
A. V. Fisenko, A. K. Lavrukhina, G. G. Ruchman
  1102

Transmission Electron Microscopy of Clinoenstatite "whiskers" in Stratosphere-Collected Interplanetary Dust
P. Fraundorf
  1103

Infrared Spectroscopy of Interplanetary Dust in the Laboratory
P. Fraundorf, J. J. Freeman, R. I. Patel
  1104

Martian Pseudocraters: Searching the Northern Plains
H. Frey, M. Jarosewich
  1105

Pseudocraters Near Hellas?
H. Frey, M. Jarosewich, K. Partridge
  1106

Study of Solar Wind Gases in a Young Lunar Soil
U. Frick, R. O. Pepin
  1107

Evidence from the ALUMINUM-26 Profile for Accretion of Apollo 15 Double Drive Tube 15010/15011
J. S. Fruchter, J. C. Evans, J. H. Reeves, R. W. Perkins
  1108

Howardites: Samples of the Regolith of the Eucrite Parent-Body Petrology of Bholgati, Bununu, and Kapoeta
M. Fuhrman, J. J. Papike
  1109

Vibrational Fracturing Rate: a New Strength Measure for Chondrites
N. Fujii, K. Ito, M. Miyamoto
  1110

On the Interpretation of the NRM of Stably Magnetized Mare Basalts
M. Fuller, D. Clauter
  1111

Characterization and Distribution of Pyroclastic Units in the Rima Bode Region of the Moon
L. R. Gaddis, J. B. Adams, B. R. Hawke, J. W. Head, T. B. McCord, C. M. Pieters, S. Zisk
  1112

Distribution and Volumes of Lava Ponds in the Orientale Region of the Moon
L. R. Gaddis, J. W. Head
  1113

Dust Cloud Observed in Venera 10 Panorama of Venusian Surface: Inferred Surface Processes
J. B. Garvin
  1114

Rock Morphology of Basalts in the Western Desert of Egypt: Implications for Viking Lander Sites on Mars
J. B. Garvin, J. W. Head, F. El-Baz
  1115

Tafoni in Basalt Boulders at South Point, Hawaii: Possible Analogs to Pitted Viking Lander Blocks on Mars
J. B. Garvin, P. J. Mouginis-Mark
  1116

Some Phase Relations Involving Chromous Pyroxenes and Other CR2+ Bearing Phases at Pressures Less than 1 Atmosphere
T. Gasparik
  1117

Luna 24: on the Nature of Mg-Rich Component
A. S. Gaverdovskaya, M. A. Nazarov, L. S. Tarasov
  1118

Planetary Surface Analogs in the Dry Valleys, South Victoria Land, Antarctica
E. K. Gibson
  1119

Soils and Weathering Processes in the Dry Valleys of Antarctica: Analogs of the Martian Regolith
E. K. Gibson, B. Ransom
  1120

The Nickel-Iron Meteorite in Pyarloya (lithuania) Impact Rocks
L. I. Glasovskaya, G. Motuza, R. Gailius
  1121

Density Constraints on the Composition of Venus
K. A. Goettel
  1122

Mineralogical Changes during Terrestrial Weathering of Antarctic Chondrites
J. L. Gooding
  1123

Estimated Viscosities and Implied Thermal Histories of Chondrule Droplets
J. L. Gooding, K. Keil
  1124

Pre-Compaction Solar Flare Irradiation Records in Antarctic Meteorites
J. N. Goswami
  1125

The Effects of Photometric Geometry on Spectral Reflectance: Color Light Curves of Asteroids
J. Gradie, J. Veverka
  1126

Brent Crater, Ontario: Observation and Theory
R. A. F. Grieve, M. J. Cintala
  1127

Petrology and Provenance of Apollo 15 Drill Core 15010/011
S. A. Griffiths, A. Basu, D. S. McKay, G. Nace
  1128

The Origin of the REE Characteristics of Kreep: the Critical Role of Pigeonite
L. P. Gromet, P. C. Hess, M. J. Rutherford
  1129

Compositional Study of Chondrules from the Highly Unequilibrated (LL3.0) Semarkona Chondrite
J. N. Grossman, J. T. Wasson
  1130

Controls of Compositional Variation in Apollo 15 Green Glass
T. L. Grove
  1131

Investigations of Pyroxferroite Stability in Lunar Basalts
T. L. Grove, D. H. Lindsley
  1132

Prediction of Isotopic Fractionation Effects in Sputtered Minerals
P. K. Haff, C. C. Watson, T. A. Tombrello
  1133

Are Basalts Adequate Probes to the Redox States of Planetary Mantles?
S. E. Haggerty
  1134

Central Peaks in Martian Craters: Comparisons to the Moon and Mercury
W. Hale, J. W. Head
  1135

Lunar Floor-Fractured Craters: Evidence for Viscous Relaxation of Crater Topography
J. L. Hall, S. C. Solomon, J. W. Head
  1136

Inclusions in Minerals in Howardite Clasts: Indicators of Processed and Unprocessed Clasts in Unmodified Regolith Breccias
G. E. Harlow, J. S. Delaney
  1137

Experimental Shock Metamorphism of Calcic Plagioclase
W. J. Harrison, F. Horz
  1138

Velocity Distribution of Ejecta from Impacts Into Powdery Regoliths: Preliminary Experimental Results
W. K. Hartmann
  1139

On the Occurrence of Giordano Bruno Ejecta on the Earth
J. B. Hartung
  1140

An Interpretation of Lunar Surface Compositions Based on Chemical Modeling of Apollo Samples
L. A. Haskin, R. L. Korotev
  1141

Some Observations on Compositional Characteristics of Lunar Anorthosites
L. A. Haskin, M. M. Lindstrom, P. A. Salpas
  1142

Trace Element Characteristics of Some Massif-Type Anorthosites
L. A. Haskin, K. E. Seifert
  1143

Spectral Studies of Lunar Dark-Halo Craters: Preliminary Results
B. R. Hawke, J. F. Bell
  1144

Geochemical Studies of the Apollo Orbital Gamma-Ray Data for the Imbrium Basin and Adjacent Regions
B. R. Hawke, M. I. Etchegaray-Ramirez, E. L. Haines, A. E. Metzger
  1145

High-Albedo Terrain on Ganymede: Origin as Flooded Graben
J. W. Head, M. L. Allison, E. M. Parmentier, S. Squyres
  1146

Topography of the Orientale Basin
J. W. Head, E. Robinson, R. Phillips
  1147

Impact Basins: Stages in Basin Formation and Evolution
J. W. Head, S. C. Solomon
  1148

Lunar Sinuous Rille Formation by Thermal Erosion: Conditions, Rates and Durations
J. W. Head, L. Wilson
  1149

Topography of Venus and Earth: a Test for the Presence of Plate Tectonics
J. W. Head, S. E. Yuter, S. C. Solomon
  1150

Martian Fractured Terrain: Coalescing Polygons
P. Helfenstein
  1151

Improved High Frequency Electromagnetic Sounding of the Lunar Mantle
F. Herbert, C. P. Sonett, L. D. Smith
  1152

Density Constraints on Models of the Structure and Differentiation of the Terrestrial Planets
C. T. Herzberg
  1153

Origin of Ti/sm Depletion in Mg-Rich Rocks and KREEP Basalts
P. C. Hess, M. J. Rutherford, L. P. Gromet
  1154

Fractionation and Equilibration in Diogenites
R. H. Hewins
  1155

Conditions of Formation of Pyroxene Excentroradial Chondrules
R. H. Hewins, L. C. Klein, B. V. Fasano
  1156

Migration of Volatiles on the Lunar Surface
R. R. Hodges
  1157

Sources of Lunar Magnetic Anomalies and Their Bulk Directions of Magnetization
L. L. Hood
  1158

The Deep Lunar Electrical Conductivity Profile: an Experimental Limit on the Radius of a Metallic Core
L. L. Hood, C. P. Sonett, F. Herbert, S. Cantrell, L. Smith
  1159

Rampart Craters on Ganymede: Implications for the Origin of Martian Rampart Craters
V. Horner, R. Greeley
  1160

Variability of Clast Mode and Grain Size in Continuous Crater Deposits
F. Horz, R. Ostertag, D. A. Rainey
  1161

Rare Gas Systematics on Venus, Earth, and Mars
C. J. Hostetler
  1162

Asteroidal Regolith Depths: does the Mean Mean what you Think it Means?
K. R. Housen
  1163

A Comparison of Current Asteroidal-Regolith Models
K. R. Housen
  1164

Considerations Concerning the Weathering History and Sulfur Content of the Martian Regolith
R. M. Housley
  1165

Oxidation of Allende Parent Material
R. M. Housley
  1166

Assessment of Diffusion in Pyroxenes: what we do and do not Know
J. S. Huebner, G. L. Nord
  1167

41K and 26MG in Allende Inclusions and a Hint of 41CA in the Early Solar System
J. C. Huneke, J. T. Armstrong, G. J. Wasserburg
  1168

Rusty Rock Consortium Allocations: Petrographic Framework
R. H. Hunter, J. R. Garrison, L. A. Taylor
  1169

The Mobility of Volatiles in Highland Rocks: Mineralogic Evidence
R. H. Hunter, L. A. Taylor
  1170

MG Isotopes, Mineralogy and Mode of Formation of Secondary Phases in c3 Refractory Inclusions
I. D. Hutcheon, R. C. Newton
  1171

Inversion, Decomposition and Exsolution Phenomena of Lunar Pyroxenes Observed in Breccia 73217
T. Ishii, S. Ghose, I. S. McCallum
  1172

Temperature and Density in a Cloud of Material Vaporized by Meteorite Impact
B. A. Ivanov, P. F. Korotkov, D. A. Sudakov
  1173

Sm-Nd Isotopic Systematics in Angra DOS Reis
S. B. Jacobsen, G. J. Wasserburg
  1174

40AR-39AR Ages of Apollo 16 Coarse-Fines Fragments and the Age of Nectaris
O. B. James
  1175

Tentative Classification of the Apollo 16 Breccias
O. B. James
  1176

Multispectral Mosaics of the Galilean Satellites
T. V. Johnson, L. A. Soderblom, J. A. Mosher, G. E. Danielson, P. Kupferman
  1177

Laboratory Trace Element Partitioning Studies Relevant to 244PU-RARE Earth Chronology
J. H. Jones, R. Heuser, D. S. Burnett, G. J. Fine
  1178

Chlorine Correlated 36AR in Allende Fine-Grained Inclusions
J. Jordan
  1179

Chlorine and Phosphorus-Bearing Phases in Lunar Samples: the Significance of CL/P2O5 Ratios: a Response
S. Jovanovic, G. W. Reed
  1180

Insights Regarding Rusty Rock 66095 Based on Trace Element Studies: the Vapor Consortium
S. Jovanovic, G. W. Reed
  1181

Mobility of Non-Gaseous Volatiles in the Lunar Regolith: 12027 Drive Tube Measurements
S. Jovanovic, G. W. Reed, J. L. Winkler, J. Warren
  1182

What is the Origin of 107AG and 109AG in Nickel-Rich Ataxites?
T. Kaiser, G. J. Wasserburg
  1183

Multielement Analytical Study of New and Unusual Carbonaceous Chondrites
G. W. Kallemeyn, J. T. Wasson
  1184

Abundance of Uranium in the Ultramafic Inclusions from the Yakutia Kimberlite Pipes
L. L. Kashkarov, A. S. Pavlenko, G. V. Baryshnikova
  1185

Compositions of Calcium, Aluminum-Rich Inclusions: Constraints on Models of Nebular Condensation
J. F. Kerridge
  1186

Refinement of the Crystal Structure of Pigeonite in Intergrown Lunar Clinopyroxene 2438 (luna 24)
N. R. Khisina, E. L. Belokoneva, L. V. Petushkova, N. V. Belov
  1187

Differentiation of Volatiles in the Planetary Formation and Evolution Processes
I. L. Khodakovsky
  1188

The Thermodynamic Properties and Origin of Osbornite, Sinoite, Carlsbergite and Daubreelite in Meteorites
I. L. Khodakovsky, M. I. Petaev
  1189

Global Maps of Martian Geophysical and Geologic Data
H. H. Kieffer
  1190

Particulate Mineral Mixtures: the Relation of Albedo and Absorption Band Strength
T. V. V. King, C. M. Pieters, D. L. Sandlin
  1191

Flow Behavior of Nine Iron-Containing Silicate Compositions
L. C. Klein, B. V. Fasano, J. M. Wu
  1192

Classification of the Rock Samples of the Apollo 14 Landing Site According to the Recommended Nomenclature of Lunar Highland Rocks
H.-D. Knoll
  1193

The Rock Samples at the Apollo 14 Site
H.-D. Knoll
  1194

Degradation of Martian Escarpments: Backwasting and Debris Accumulation
R. C. Kochel, V. R. Baker
  1195

Are Cai's Condensates or Distillation Residues? Evidence from a Comprehensive Survey of - to Medium-Grained Inclusions in the Allende C3(V) Carbonaceous Chondrite
A. S. Kornacki
  1196

Compositional Trends in Apollo 16 Soils
R. L. Korotev
  1197

Comparison of Geophysical Fields and Structures of the Earth and the Moon
E. D. Koryakin
  1198

Winona Meteorite: Fission Track Ages, and PU and U Distributions
B. K. Kothari
  1199

Spallation Reactions at the Poststellar Stage of Evolution of the Solar System Matter
R. I. Kuznetsova, A. K. Lavrukhina
  1200

Extraterrestrial Siderophiles and Geologic Extinctions
F. T. Kyte, Z. Zhou, J. T. Wasson
  1201

Shock Metamorphism: SEM Investigation
P. Lambert
  1202

Comparative Shock Metamorphism Study in 12 Chondrites
P. Lambert, C. Lewis, C. B. Moore
  1203

Primordial Thermal History of Growing Planetary Objects
P. Lanciano, C. Federico, A. Coradini
  1204

Flow Processes in Lunar and Planetary Interiors
T. G. Langdon, A. Dehghan, C. G. Sammis
  1205

Impact Experiments in Low-Temperature Ice
M. A. Lange, T. J. Ahrens
  1206

Grain Size and Maturity in Lunar and Asteroidal Regoliths
Y. Langevin, M. Maurette
  1207

Lunar Regolith: Comparative Chemistry of the Apollo and Luna Soils
J. C. Laul
  1208

Chemical Composition of Allende Chondrite Olivine
A. K. Lavrukhina, N. N. Korotkova
  1209

A MG Survey for More "fun" Isotopic Anomalies
T. Lee, M. L. Zeff
  1210

Enstatite Chondrites i: Mineralogy and Petrography
C. A. Leitch, J. V. Smith
  1211

Enstatite Chondrites II: Genesis
C. A. Leitch, J. V. Smith
  1212

Argon and Xenon Adsorption on Mineral Surfaces: the Cosmochemical and Geochemical Consequences
L. K. Levsky, A. B. Verchovski, A. N. Chorev
  1213

XE129 and the Origin of CCF Xenon in Meteorites
R. S. Lewis, E. Anders
  1214

Geochemical Studies of Breccias from North Ray Crater, Apollo 16
M. M. Lindstrom, P. A. Salpas
  1215

Highland Chemistry: Major and Trace Element Classification of Rock Types
K. J. Livi, S. O. Brande, A. E. Bence
  1216

Modeling Equilibrium Partial Melting: Implications for Early Lunar Differentiation
J. Longhi
  1217

Terrain Map of Europa
B. K. Lucchitta, L. A. Soderblom
  1218

Electron Microscopy of Carbon in Allende Acid Residues
G. R. Lumpkin
  1219

Analogous and Complementary Rare Earth Element Patterns on Meteorite Parent Bodies and the Earth Inferred from a Study of the Achondrite ALHA 77005, Other Unique Achondrites and the Shergottites
M.-S. Ma, J. C. Laul, R. A. Schmitt
  1220

Chemistry of Individual Green Glasses and Brown Glasses from 15426
M.-S. Ma, Y.-G. Liu, R. A. Schmitt
  1221

Chemical and Petrographic Study of Spinel Troctolite in 67435: Implications for the Origin of Mg-Rich Plutonic Rocks
M.-S. Ma, R. A. Schmitt, G. J. Taylor, R. D. Warner, K. Keil
  1222

Refractory ABC
J. D. MacDougall, J. F. Kerridge, D. Phinney
  1223

Clastic Rims on Inclusions: Clues to the Accretion of the Allende Parent Body
G. J. MacPherson, L. Grossman
  1224

Origin of Rims on Coarse-Grained Inclusions in the Allende Meteorite
G. J. MacPherson, L. Grossman, J. R. Beckett, J. M. Allen
  1225

C Chondrites: Low-Temperature Metamorphism
T. V. Malysheva, K. I. Tobelko, D. A. Khramov, T. P. Kuznezova, L. M. Satarova
  1226

Apollo 16 Breccia 67015: First Observations on a Consortium Rock
U. B. Marvin
  1227

High-Ferruginous Tagamites from the Terny Astrobleme (ukrainian Shield)
V. L. Masaitis, M. S. Mashchak, V. A. Ezersky
  1228

Dynamics of Clastic Material Distribution in Allogenic Breccias and Suevites of the Kara Astrobleme
V. L. Masaitis, M. S. Mashchak, T. V. Selivanovskaya, V. A. Ezersky
  1229

Venus: a First Geologic Map Based on Radar Altimetric and Image Data
H. Masursky, A. L. Dial, G. G. Schaber, M. E. Strobell
  1230

Io's Atmosphere: Pressure Control by Subsurface Regolith Coldtrapping
D. L. Matson, D. B. Nash
  1231

Conditions Required for Runaway Accretion of the Earth
T. Matsui
  1232

The Balmer Basin: Identification of an Ancient Basin on the Lunar East Limb
T. A. Maxwell, C. G. Andre
  1233

Ridge Patterns of Large Craters and Basins on Mars
T. A. Maxwell, A. W. Gifford
  1234

Fractionation Trends in the Lunar Crust and the Stillwater Complex Trace Element Data
I. S. McCallum, L. D. Raedeke, H. Wiesmann
  1235

Remote Detection of Olivine, Pyroxene and Plagioclase: Analysis of Three Lunar Sites
T. B. McCord, R. N. Clark, B. R. Hawke, L. A. McFadden, P. D. Owensby, C. M. Pieters, J. B. Adams
  1236

Lunar Microcrater Records: where is the Cometary Efflux?
J. A. M. McDonnell, R. J. Allison
  1237

The Layered Crust Model and the Surface of Vesta
L. A. McFadden, M. J. Gaffey, H. Takeda
  1238

Petrography of Core 15008 and a Comparison to Core 15010/11
D. McKay, A. Basu, G. Nace
  1239

The Origin of Apollo 16 Dimict Breccias
J. P. McKinley, G. J. Taylor, K. Keil, M.-S. Ma, R. A. Schmitt
  1240

Tectonic Deformation of Galileo Regio and Limits to the Planetary Expansion of Ganymede
W. B. McKinnon, J. Spencer
  1241

Bulk Compositional Variations, Viscosities, and the Effects of Oxidation and Sulfide Abundances on the Formation of Chondrules in the Allende Meteorite
B. M. McMahon, L. A. Tompkins, S. E. Haggerty
  1242

Measurements of Xenon Diffusion in Feldspar
C. L. Melcher, D. S. Burnett, T. A. Tombrello
  1243

A Bingham Plastic Model of Crater Collapse
H. J. Melosh
  1244

Problems in Spectral Emittance Theory
W. W. Mendell
  1245

Spectral REFLECTANCE(250-2500NM) of Powdered Samples of Olivines and Some Meteorites
M. Miyamoto, A. Mito, H. Takeda
  1246

10BE in Stony Meteorites by Accelerator-Based Mass Spectrometry
R. K. Moniot, T. H. Kruse, W. Savin, G. S. Hall, T. Milazzo, G. F. Herzog
  1247

Strangway's Crater: Trace Elements in Melt Rocks
J. W. Morgan, G. A. Wandless, R. K. Petrie
  1248

Microstructures of Pyroxenes from Two Eucrites and a Lunar Monzodiorite
H. Mori, H. Takeda, R. Sadanaga
  1249

On the Stability of Ferric Oxyhydroxides (feooh) to Dehydration by UV Radiation: Implications for the Hydration State of the Martian Surface
R. V. Morris, H. V.. Lauer
  1250

Diffuse Reflectance Spectra of Pigmentary-Sized Iron Oxides, Iron Oxyhydroxides, and Their Mixtures: Implications for the Reflectance Spectra of Mars
R. V. Morris, S. C. Neely
  1251

Late-Stage Summit Activity of Martian Volcanoes
P. J. Mouginis-Mark
  1252

An Unusual Volcanic Center in Western Elysium Planitia, Mars
P. J. Mouginis-Mark, S. H. Brown
  1253

Martian Large Crater and Basin Deposits: Implications for the Thickness of a Subsurface Volatile Layer and Site Geology at Viking Lander 2
P. J. Mouginis-Mark, B. R. Hawke
  1254

Hypsometry of Martian Terrains from Earth-Based Radar Measurements
P. J. Mouginis-Mark, S. H. Zisk
  1255

On the Mechanism of the Enrichment of the Venus Atmosphere with Noble Gases
L. M. Mukhin, M. V. Gerasimov
  1256

Actinide Microdistributions in Enstatite Chondrites
M. T. Murrell, D. S. Burnett
  1257

Rare-Earths in the Allende Inclusion, EK 1-4-1 and the Origin of Allende Inclusions
H. Nagasawa, D. P. Blanchard, H. Shimizu, A. Masuda
  1258

The Composition of Natural Remanent Magnetization of an Antarctic Chondrite, ALHA76009(L6)
T. Nagata, M. Funaki
  1259

Apollo 15 Green Glass: a Mare Margin Deposit
J. S. Nagle
  1260

Solar and Galactic Cosmic Ray Records of Noble Gases in Lunar Rock 79215
C. M. Nautiyal, J. T. Padia, M. N. Rao, T. R. Venkatesan
  1261

Luna 20: Modal Mineralogy of Highland Rocks
M. A. Nazarov
  1262

The Luna 20 P-Rich Metal Particle: Bulk Composition and Trace Element Pattern
M. A. Nazarov, G. M. Kolesov, I. D. Shevaleevsky
  1263

Cumberland Falls Chondritic Inclusions: a Primative Forsterite Chondrite Suite
C. W. Neal, M. E. Lipschutz
  1264

Orthopyroxenite Clasts in Mesosiderites and Howardites: Relationships with Diogenites and Orthopyroxene Cumulate Eucrites
C. E. Nehru, J. S. Delaney, G. E. Harlow, S. Frishman, M. Prinz
  1265

TI Isotopes in Allende Inclusions and Unequilibrated Chondrite Chondrules
S. Niemeyer, G. W. Lugmair
  1266

Cosmogenic Nuclides in Antarctic Meteorites
K. Nishiizumi, J. R. Arnold
  1267

53MN Profiles and Gardening Processes in Lunar Cores 60010 and 15011
K. Nishiizumi, J. R. Arnold
  1268

Petrography of Feldspathic Fragmental Breccia 67016: Analog of Terrestrial Suevite?
M. D. Norman
  1269

The Role of Salt in Aggregate Formation on Mars
D. Nummedal
  1270

SR and nd Cooling Ages of Cumulate Norite 78236
L. E. Nyquist, W. U. Reimold, J. L. Wooden, B. M. Bansal, H. Weismann, C.-Y. Shih
  1271

Impact Mechanics of the Cretaceous-Tertiary Extinction Bolide
J. D. O'Keefe, T. J. Ahrens
  1272

How much Zenon in Shales?
L. L. Oliver, O. K. Manuel
  1273

Silicate Inclusions in the Elga Octahedrite Ii: Shock Metamorphism
Eu. G. Osadchii
  1274

Silicate Inclusions in the Elga Octahedrite i: Mineralogy and Structure
Eu. G. Osadchii, I. N. Romanenko, G. V. Baryshnikova
  1275

Tungsten and Some Other Siderophile Elements in Meteoritic and Terrestrial Basalts
H. Palme, W. Rammensee
  1276

Interpretation of Phase Curves of io and Ganymede: Nature of Surface Particles
K. D. Pang, K. A. Lumme, E. Bowell
  1277

Microchrons: the 87RB-87SR Dating of Microscopic Samples
D. A. Papanastassiou, G. J. Wasserburg
  1278

The Lunar Regolith: Significance of the Chemistry of the <10 um Fraction and a Model for Agglutinate Formation Involving Fusion of the Finest Fraction (F3)
J. J. Papike
  1279

The Lunar Regolith: Calculated Chemistry and Major Element Partitioning among the Regolith Components
J. J. Papike, C. White
  1280

Potassium Concentrations in the Lunar Surface
R. E. Parker, E. L. Haines, A. E. Metzger
  1281

Viscous Degradation of Impact Craters on Icy Planetary Surfaces: Viscosity Variation with Depth
E. M. Parmentier, J. W. Head
  1282

Regional Variation of Crater Density and Model Ages of Callisto's Crust
Q. R. Passey, E. M. Shoemaker
  1283

The Hafnium Isotopic Evolution of Lunar Basalts
P. J. Patchett, M. Tatsumoto
  1284

Lu/hf in Chondrites and Definition of a Chondritic Hafnium Growth Curve
P. J. Patchett, M. Tatsumoto
  1285

Early Thermal Histories of L Chondrites
P. Pellas
  1286

Hebes Chasma - Martian Pyroclastic Sink
C. M. Peterson
  1287

Implications of Archean Anorthosites for Crust-Mantle Evolution
W. C. Phinney, D. A. Morrison, L. D. Ashwal
  1288

Copernicus' Peak: Possible Cumulate Olivine
C. M. Pieters, J. B. Adams, T. B. McCord
  1289

Multispectral Images for Core 15008: a Stratigraphic Tool
C. M. Pieters, A. Meloy, B. R. Hawke, J. S. Nagle
  1290

Crater Depths on Mars: New Data from Viking Photogrammetry
R. J. Pike
  1291

Meteorite Craters: Rim Height, Circularity, and Gravity Anomalies
R. J. Pike
  1292

Target-Dependence of Crater Depth on the Moon
R. J. Pike
  1293

The Role of Adsorption in the Excess Fission xe Effect
F. A. Podosek, T. J. Bernatowicz, F. E. Kramer, C. M. Hohenberg
  1294

The Effect of Shock on Remanence in Multi-Domain Iron Grains and Implications for Palaeointensity Measurements
J. Pohl, A. Eckstaller
  1295

Observations of Silicate Reststrahlen Bands in Lunar Infrared Spectra
A. E. Potter, T. H. Morgan
  1296

A Reexamination of the Evidence in Lunar Sample 12013 for Highly Fractionated Rocks at 4.5 AE
J. E. Quick, A. L. Albee
  1297

Chilling Products of Superheated Impact Melts from Some Astroblemes of the U.S.S.R. Territory
A. I. Raikhlin, A. N. Danilin, V. S. Kozlov, N. B. Reshetnyak
  1298

Evidence for 244PU Fission Tracks in Hibonites from Murchison Carbonaceous Chondrite
R. S. Rajan, A. S. Tamhane
  1299

The Nebular Record in Krymka, a Highly Unequilibrated LL Chondrite
E. R. Rambaldi
  1300

Lunar Isotopic Variations: Reflections of Changes in Solar Wind Composition or Flow?
J. Ray, D. Heymann
  1301

Cosmic-Ray Stable Nuclides: Various Production Rates and Their Implications
R. C. Reedy
  1302

A Structural Analysis of Valhalla Basin, Callisto
A. R. Remsberg
  1303

Apollo 11 Breccias: Aluminous Mare Basalts or Multi-Component Mixtures?
J. M. Rhodes, D. P. Blanchard
  1304

Chemistry of Some Antarctic Meteorites
J. M. Rhodes, C. R. Fulton
  1305

Phenomenological Theory of Attenuation and Propagation Velocity of Elastic Waves in Rocks
J. M. Richardson, B. R. Tittmann, M. Abdel-Gawad
  1306

Impact Vaporization and Lunar Origin
S. M. Rigden, T. J. Ahrens
  1307

Siderophile Elements in Mare Basalts Revisited
A. E. Ringwood, S. E. Kesson
  1308

Rhenium Depletion in Mare Basalts and Redox State of the Lunar Interior
A. E. Ringwood, S. E. Kesson, W. Hibberson
  1309

Haughton Impact Structure - a Terrestrial Multi-Ring Basin?
P. B. Robertson, J. F. Sweeney, R. A. F. Grieve
  1310

Comparisons of Field Observations, Experimental Results, and Numerical Code Calculations for Large-Scale Impact and Explosion Cratering Events: Meteor Crater and Middle Gust III
D. J. Roddy, K. Kreyenhagen, S. Schuster
  1311

A Survey of Compositions of Clear Glass Particles in Apollo 16 Soils, and the Source of Clear Glasses in the Lunar Regolith
H. R. Rogers
  1312

Equilibrium Conditions in a Terra and a Mare Region
L. B. Ronca, A. T. Basilevsky, V. P. Kryuchkov, B. A. Ivanov
  1313

Radar Altimetry of the Large Martian Craters
L. E. Roth, G. S. Downs, R. S. Saunders, G. Schubert
  1314

A New Kind of Unequilibrated Ordinary Chondrite with a - Magnetite Matrix
A. E. Rubin, S. McKinley, E. R. D. Scott, G. J. Taylor, K. Keil
  1315

Implications of Lunar Palaeomagnetism
S. K. Runcorn, D. W. Collinson, A. Stephenson
  1316

Magnetic Evidence for a Lunar Core
C. T. Russell, P. J. Coleman, B. E. Goldstein
  1317

Granite Genesis in a Planetary Context: Processes and Important Variables for Mars
M. J. Rutherford, P. C. Hess
  1318

The Apollo 17 Highlands: the South Massif Soils
G. Ryder
  1319

On the Gravitational Field of PHOBOS
M. U. Sagitov, B. O. Mikhailov, Kh. G. Tadjidinov
  1320

The Ridged Plains of Mars
R. S. Saunders, T. G. Bills, L. Johanson
  1321

Planetary Phase Equilibria at 600 and 800K
S. K. Saxena
  1322

Large-Scale Equatorial and Mid-Latitude Surface Disruptions on Venus: Preliminary Geologic Assessment
G. G. Schaber, H. Masursky
  1323

39AR-40AR Study of Allan Hills Meteorite 77005, a Unique Achondrite
O. A. Schaeffer, R. Warasila
  1324

An Experimental Investigation of Transient Crater Size
R. M. Schmidt, K. A. Holsapple
  1325

High Spatial Resolution Mg/al Maps of the Western Crisium and Sulpicius Gallus Regions
E. Schonfeld
  1326

Uranium Redox Equilibria in Interaction with Chromium in Molten Silicates
H. D. Schreiber, G. B. Balazs
  1327

The Chemistry of Uranium in Synthetic Silicate Liquids
H. D. Schreiber, G. B. Balazs, B. J. Williams
  1328

Equatorial Paleo-Poles on Mars
P. H. Schultz, A. B. Lutz-Garihan
  1329

Impact Crater Growth and Ejecta Characteristics: Results from Computer Simulations
P. H. Schultz, D. L. Orphal, B. Miller, W. F. Borden, S. A. Larson
  1330

Mars: a Highland Volcanic Province
D. H. Scott, K. L. Tanaka
  1331

Graphite - Magnetite Inclusions in Ordinary Chondrites: an Important Constituent in the Early Solar System
E. R. D. Scott, G. J. Taylor, A. E. Rubin, A. Okada, K. Keil, B. Hudson, C. M. Hohenberg
  1332

Dark Inclusions in the Abbott, Cynthiana and Abee Chondrites
D. W. Sears, J. T. Wasson
  1333

The Origin of Mare Ridges: Evidence from Basalt Stratigraphy and Substructure in Mare Serenitatis
V. L. Sharpton, J. W. Head
  1334

Subsurface Basalt Stratigraphy of Mare Serenitatis
V. L. Sharpton, J. W. Head
  1335

Sm-Nd and Rb-Sr Isotopic Systematics of Australasian Tektites
H. F. Shaw, G. J. Wasserburg
  1336

Assessment of Ferric Iron Oxide Minerals Likely to Occur on Mars
D. M. Sherman, R. G. Burns, V. M. Burns
  1337

REE, SR and nd Isotopic Studies on Shocked Achondrites-Shergotty Zagami and ALHA 77005
C.-Y. Shih, L. E. Nyquist, B. M. Bansal, H. Wiesmann, J. L. Wooden, G. McKay
  1338

U-Isotopic Abundances
T. Shimamura, G. W. Lugmair
  1339

The Importance of Magma Density in the Evolution of KREEP
D. N. Shirley
  1340

An Attempt at Mapping the Parameter of Surface Microporosity of Lunar Regolith: Correlation Between Albedo and Polarization Properties of the Moon
Yu. G. Shkuratov, A. T. Basilevsky
  1341

The Lunar Regolith: Comparative Petrology of the Apollo and Luna Soils
S. B. Simon, J. J. Papike
  1342

The Lunar Regolith: Petrology of Three Apollo 17 Surface Soils
S. B. Simon, J. J. Papike
  1343

Apollo 14 Regolith Breccia 14301: Petrology and Chemistry of Grain Size Separates and the Nature of the Fused Soil Component
S. B. Simon, J. J. Papike, J. C. Laul
  1344

Petrochemistry of Apollo 16 and 17 Samples
C. H. Simonds, J. L. Warner
  1345

Spectral Constraints on Iron-Rich Smectites as Abundant Constituents of Martian Soils
R. B. Singer
  1346

Spectral Variety of Martian Surface Materials: Comparison of Earth-Based and Viking Lander Data
R. B. Singer, E. L. Strickland
  1347

Should Enstatite Chondrites BE Considered when Modeling the Chemical Composition of the Earth?
J. V. Smith
  1348

Was a Hydrous and Carbonated Magma Present on the Moon?
J. V. Smith
  1349

Eucritic and Al-Rich Clasts in the Kapoeta Howardite: Chemical Data
M. R. Smith, R. A. Schmitt
  1350

Petrogenesis of Continental Flood Basalts from the Siberian Platform and a Model of Mantle Evolution
M. R. Smith, R. A. Schmitt
  1351

Preliminary Chemical Data for Some Allan Hills Polymict Eucrites
M. R. Smith, R. A. Schmitt
  1352

Carbynes in Carbonaceous Chondrites: a Cautionary Comment
P. P. K. Smith, P. R. Buseck
  1353

The Effect of Crystallization of Ice on Cometary Outbursts
R. Smoluchowski
  1354

The Evolution of Multi-Ringed Basins: Viscoelastic Relaxation of Topographic Relief
S. C. Solomon, J. W. Head
  1355

Cosmogenic Nuclide Production in Small Spherical Meteoroids
M. S. Spergel, R. C. Reedy, O. W. Lazareth, P. W. Levy
  1356

Chemical Mixing Model Studies of Lunar Orbital Geochemical Data: Apollo 16 and 17 Highlands Compositions
P. D. Spudis, B. R. Hawke
  1357

Origin of Grooves on Ganymede
S. W. Squyres, E. M. Parmentier, J. W. Head
  1358

Ion Probe Analysis of Stillwater Plagioclase and Comparison with Lunar Analyses
I. M. Steele, J. V. Smith, L. D. Raedeke, I. S. McCallum
  1359

Ion Probe Analysis of Plagioclase in Eucrites and Howardites
I. M. Steele, J. V. Smith, J. Wyszynski
  1360

The Behavior of Water in the Giant Planets
D. J. Stevenson, E. Fishbein
  1361

A Fluid Outer Core for the Moon and its Implications for Lunar Dissipation, Free Librations and Magnetism
D. J. Stevenson, C. F. Yoder
  1362

Distribution and Provenance of Rock Types from North Ray Crater, Apollo 16
D. Stoffler, R. Ostertag, W. U. Reimold
  1363

Experimental Study of the Crystallization Sequences of Ca-Al Inclusions in Allende
E. Stolper
  1364

Furrowed and Pitted Terrain on the Lunar East Side: X-Ray Fluorescence Data
P. L. Strain, F. El-Baz
  1365

Cratering Records of Ganymede and Callisto
R. G. Strom, A. Woronow, M. C. Gurnis
  1366

Magnetic Properties of Antarctic Meteorite AH77304
N. Sugiura, D. W. Strangway
  1367

Preliminary Report on the Magnetic Properties of the Abee Meteorite
N. Sugiura, D. W. Strangway
  1368

Natural Radioactivity of the Moon and Planets
Yu. A. Surkov
  1369

On Dilatancy of Rocks by Explosive Effects
N. M. Syrnikov, V. M. Tsvetkov, I. A. Sisov
  1370

Thermal and Impact Histories of Pyroxenes in Lunar Eucritic Gabbros and Eucrites
H. Takeda, H. Mori, T. Ishii, M. Miyamoto
  1371

Yamato Polymict Eucrites: Regolith Breccias Excavated from a Layered Crust
H. Takeda, K. Yanai
  1372

A Model for Synthesis of Methane in Lunar Soil
A. S. Tamhane
  1373

The Occurrence and Implications of Carbide-Magnetite Assemblages in Unequilibrated Ordinary Chondrites
G. J. Taylor, A. Okada, E. R. D. Scott, A. E. Rubin, G. R. Huss, K. Keil
  1374

- and Phosphorus-Bearing Phases in Lunar Samples: the Significance of CL/P2O5 Ratios
L. A. Taylor, R. H. Hunter
  1375

Chlorine and Sulfur Abundances in Mars and the Moon: Implications for Bulk Composition
S. R. Taylor, R. R. Hodges
  1376

Concerning Pb-U in Chondrites
F. Tera
  1377

Congruency of Conformable Galenas - Age of the Earth
F. Tera
  1378

Young Lunar Crater Ejecta Characteristics from Radar, Infrared and Visual Observations
T. W. Thompson, J. A. Cutts, P. H. Schultz, R. W. Shorthill, S. H. Zisk
  1379

Frequency Dependence of Seismic Dissipation Q-1
B. R. Tittmann, M. Abdel-Gawad, C. Salvado, J. Bulau, H. Nadler, L. Ahlberg, T. W. Spencer
  1380

Tidal Triggering of Earthquakes
M. N. Toksoz, D. S. Sawyer, C. H. Cheng
  1381

Sweeping of Jovian Commensurability Resonances in the Early Solar System and the Origin and Evolution of the Asteroids
M. Torbett, R. Smoluchowski
  1382

Support of Topographic and Other Loads on the Moon and Mars
D. L. Turcotte, R. J. Willemann
  1383

Simplified Model Evaluation of Cooling Rates for Glass-Containing Lunar Compositions
D. R. Uhlmann, H. Yinnon, C.-Y. Fang
  1384

The Vaporization of the Basaltic Melt in Vacuum at the Constant Temperature: Experimental Results
A. A. Ulyanov, O. I. Yakovlev, M. A. Nazarov, E. J. Sherbovsky
  1385

U-Pb Study of l3 Chondrites: Old Ages or Young Disturbances?
D. M. Unruh, M. Tatsumoto, R. Hutchinson
  1386

Compositional Characteristics of Solar Wind and Solar Flare Neon in the Past Using Lunar Soils and Rocks
T. R. Venkatesan, C. M. Nautiyal, J. T. Padia, M. N. Rao
  1387

The Allende Pink Angel: Chronological Constraints from xe, ar, and MG
I. M. Villa, J. C. Huneke, D. A. Papanastassiou, G. J. Wasserburg
  1388

A Study of Crater Morphology in Volatile-Containing Rock
J. Vizgirda, T. J. Ahrens
  1389

Rare Gas Systematics in Abee Clasts
J. Wacker, K. Marti
  1390

Micrometeorites and Possible Cometary Dust from Antarctic Ice Cores
J. Wagstaff, E. A. King
  1391

Drainage in Gobi Terrain: a Mars Analog
A. S. Walker
  1392

Soret Separation of Lunar Liquid
D. Walker, C. E. Lesher, J. F. Hays
  1393

The Apollo 15 Regolith: Comparative Petrology of Cores 15003 and 15010/ 15011 and an Assessment of the Nature of the Agglutinate Component
R. J. Walker, J. J. Papike
  1394

Multielement Analysis of Samples from Highland Breccia 66095: a Contribution to the "rusty Rock" Consortium
H. Wanke, K. Blum, G. Dreibus, H. Palme, B. Spettel
  1395

Chemistry of the Earth and the Significance of Primary and Secondary Objects for the Formation of Planets and Meteorite Parent Bodies
H. Wanke, E. Dreibus, G. Jagoutz, H. Palme, W. Rammensee
  1396

An Estimate of Atmospheric Contamination of Allende Coarse Grain Inclusions
R. Warasila, O. A. Schaeffer, K. Frank
  1397

Alteration and Metasomatism of Allende Ca-Al Materials
D. A. Wark
  1398

The Pre-Alteration Compositions of Allende Ca-Al Condensates
D. A. Wark
  1399

Similarities in the Igneous Development of the Feldspathic Crust of Earth and Moon
J. L. Warner
  1400

Additional Pristine Nonmare Rocks from the Western Hemisphere of the Moon - Implications for Petrogenetic Models
P. H. Warren, G. J. Taylor, K. Keil, C. Marshall, J. T. Wasson
  1401

Possible Experimental Verification of the Butler-Banerjee Prediction: no Stable Single Domain Size Range for Iron Spheres
P. J. Wasilewski
  1402

Magnetic Properties of Ordering Alloys in Meteorites
P. J. Wasilewski, C. Saralkar
  1403

Stable NRM and Mineralogy in Allende: Chondrules
P. J. Wasilewski, C. Saralkar
  1404

Characteristics of a Sputter-Induced Atmosphere on IO
C. C. Watson, P. K. Haff, T. A. Tombrello
  1405

Effect of Partitioning in Determining the Composition of Planetary Mantles
J. P. Watt, T. J. Ahrens
  1406

Aspects of Accretion in a Circumplanetary Nebula
S. J. Weidenschilling
  1407

Impact Accretion Experiments
V. Werle, H. Fechtig, E. Schneider
  1408

Can One Find Tranquility in the Lunar Highlands?
G. W. Wetherill
  1409

Characteristics of Lunar Extra-Mare Basaltic Volcanism
J. L. Whitford-Stark
  1410

Lunar Basalt Distribution and the Number of Vents
J. L. Whitford-Stark
  1411

On the Source of Liquid H2O in the Carbonaceous Chondrite Parent Bodies
L. L. Wilkening
  1412

The Revision of Metallographic Cooling Rate Curves for Chondrites
J. Willis, J. I. Goldstein
  1413

Io Volcanic Eruptions: Mass Eruption Rate Estimates
L. Wilson, J. W. Head
  1414

Volcanic Eruption Mechanisms on Mars: Some Theoretical Constraints
L. Wilson, J. W. Head
  1415

Meteorites from Mars: Prospects, Problems and Implications
C. A. Wood, L. D. Ashwal
  1416

On the Nature of the Pallasite Parent Body: Midcourse Corrections
J. A. Wood
  1417

Chemical and Isotopic Studies of the Allan Hills Polymict Eucrites
J. Wooden, A. Reid, R. Brown, B. Bansal, H. Wiesmann, L. Nyquist
  1418

Proton-Probe Analysis of Planetary Materials
D. S. Woolum, P. Boisseau
  1419

Bi, pb, CR and Si-Rich Metals in Hallingeberg (L3)
D. S. Woolu, J. Conca, D. S. Burnett
  1420

Water Content of Rampart Ejecta Deposits from Pre-Flow Stresses
A. Woronow
  1421

Cratering Record in the Inner Solar System
A. Woronow, R. Strom, M. C. Gurnis
  1422

New Global Topographic Mapping of the Moon
S. S. C. Wu
  1423

Single Crystal Investigation of Deformation in Naturally Shocked Quartz - a Restudy
X. Xiande, E. C. T. Chao
  1424

The Selective Condensation of Vapor Enriched with Alkalies and its Implication to the Ultrapotassium Impactites: Experimental Results
O. I. Yakovlev, O. V. Parfenova, K. I. Ignatenko
  1425

Isotopic Ratios of Rare Gases and the Role of Nuclear Reactions in Solar Flares
A. Yaniv, T. Kirsten
  1426

Porosity of Ordinary Chondrite -- is it a Good Measure of a Consolidation State of Composite Materials of Chondrite?
K. Yomogida, T. Matsui
  1427

High Resolution Visual, Thermal, and Radar Observations in the Northern Syrtis Major Region of Mars
J. Zimbelman, R. Greeley
  1428

Simulated Mantled Surfaces on Cratered Terrain
J. Zimbelman, R. Greeley
  1429

Characterization of Martian Geological Units by Multivariate ("cluster") Analysis of Earth-Based Radar Data
S. H. Zisk, P. J. Mouginis-Mark
  1430

Oases Revisited: Further Analysis of the SOLIS Lacus Radar Anomaly on Mars
S. H. Zisk, P. J. Mouginis-Mark
  1431

On a New Model for the Generation of Chondrites
H. A. Zook
  1432