Lunar and Planetary Institute






Tenth Lunar and Planetary Science Conference

TABLE OF CONTENTS

no.

Effects of Shock-Loading on the Reflectance Spectra of Plagioclase, Pyroxene, and Glass
J. B. Adams, F. Horz, R. V. Gibbons
  1001

Charged Particle Range Contraction in Solid State Nuclear Track Detectors
A. Aframian
  1002

Monte Carlo Simulation of the Lunar Regolith and Implications
H. R. Aggarwal, V. R. Oberbeck
  1003

Indicatrix Measurements of Lunar Samples from Landing Sites of Luna 24, Luna 16, and Luna 20
L. A. Akimov, I. I. Antipova-Karataeva, Tu. G. Shkuratov
  1004

Host Phases of Neon-E and S-Process Xenon in the Murchison c2 Chondrite
L. Alaerts, R. S. Lewis, E. Anders
  1005

Distribution of Bromine, Iodine, Barium, and Uranium in Four Lunar Soils
E. C. Alexander, M. R. Coscio, J. C. Dragon, K. Saito, R. O. Pepin
  1006

Volcano/ice Interactions on Mars
C. C. Allen
  1007

Olivine Vitrophyres in Apollo 14 Breccia 14321: Samples of the High MG Component of the Lunar Highlands
F. Allen, A. E. Bence, T. L. Grove
  1008

Mineralogical Study of an Isotopically-Unusual Allende Inclusion
J. M. Allen, L. Grossman, T. Lee, G. J. Wasserburg
  1009

Chondrule Rims: Composition and Texture
J. Allen, S. Nozette, L. L. Wilkening
  1010

Core 15010/15011: Description and Units Based on Lithology of Fragments >1 MM
J. H. Allton
  1011

The Olivine-Ilmenite Thermometer: Preliminary Data at 700-900 Degrees C
D. J. Andersen, D. H. Lindsley
  1012

Are Early Magnesium-Rich Basalts Widespread on the Moon?
C. G. Andre, R. W. Wolfe, I. Adler
  1013

Mare Basalt Depths from Orbital X-Ray Data
C. G. Andre, R. W. Wolfe, I. Adler, P. E. Clark
  1014

On the Thermal Evolution of Venus
J. Arkani-Hamed, M. N. Toksoz
  1015

Simulation Experiments of the Radiation Cooling of Lunar Glasses
J. Arndt
  1016

Infrared Emission Spectra of Lunar Soils
J. R. Aronson, A. G. Emslie, E. M. Smith
  1017

Mars Relative Altitudes from Shadows
D. W. G. Arthur
  1018

Changes at the Viking Landing Sites Over Short and Long Time Scales
R. E. Arvidson, E. A. Guinness
  1019

The First Finding of the Metal Aluminum Particles in the Lunar Soil
N. A. Ashikhmina, O. A. Bogatikov, A. I. Gorshkov, A. V. Mokhov, V. G. Obronov, D. I. Frikh-Khar
  1020

Sylvite and Halite in the Lunar Soil
N. A. Ashikhmina, A. I. Gorshkov, A. V. Mokhov, V. G. Obronov
  1021

Siderophile Element Fractionation in the Metal Phase of the Knyahinya Chondrite
P. A. Baedecker, J. W. Morgan, J. I. Goldstein
  1022

Cavitation Processes in Martian Water Flows
V. R. Baker
  1023

Streamlined Erosional Forms of Kasei and Maja Valles, Mars
V. R. Baker
  1024

Distribution and Shock Metamorphism of Crystalline Clasts in the Continuous Deposits of the Ries Crater, Germany
G. Banholzer, F. Horz
  1025

Volatile Trace Elements in Gas-Rich and Antarctic Meteorites
G. Bart, S. Biswas, N.-T. Hung, M. E. Lipschutz
  1026

Craters of PHOBOS and Deimos: Photogeologic Study
A. T. Basilevsky, I. M. Chernaya
  1027

Apollo 15 Soil Petrographic Provinces and the Plagioclase-Rich Paleosol
A. Basu, D. S. McKay
  1028

Apollo 15 Green Glass Vitrophyres
A. Basu, C. H. Moore, N. R. Shaffer
  1029

Effects of Diurnal Temperature Variations on Lunar Rocks
M. L. Batzle, G. Simmons
  1030

Experimental Shock Metamorphism of Mono- and Polycrystalline Olivine: a Comparative Study
J. F. Bauer
  1031

Comparative Petrology and Significance of the Apollo 11 High-K Vitrophyres
D. W. Beaty, S. M. R. Hill, A. L. Albee
  1032

Low-K Basaltic Fragments from Apollo 11 Soils
D. W. Beaty, S. M. R. Hill, A. L. Albee
  1033

Petrology of a New Rock Type from Apollo 11: Group D Basalts
D. W. Beaty, S. M. R. Hill, A. L. Albee
  1034

Light Elements in Lunar Soils Revisited: Carbon, Nitrogen, Hydrogen, and Helium
R. H. Becker
  1035

Crystal-Field Spectra of Lunar Pyroxenes and Glasses: a Comparison of the Effects of Composition, Oxygen Fugacity, and Meteorite Impact
P. M. Bell, H. K. Mao
  1036

Laboratory Partitioning Studies, Testing the Validity of 244PU-RARE Earth Chronology
T. A. Benjamin, J. H. Jones, D. S. Burnett
  1037

The Governador Valadares Nakhlite and its Relationship to Other Nakhlites
J. L. Berkley, K. Keil, M. Prinz, C. G. Gomes
  1038

Surface-Correlated Krypton and Xenon in Grain Size Separates from Breccia 14301
T. J. Bernatowicz, C. M. Hohenberg, F. A. Podosek
  1039

Production Profiles of Radionuclides in Chondrites and Their Solar Cycle Variation
N. Bhandari, S. K. Bhattacharya, M. B. Potdar
  1040

Meteorite Record of the Cosmic Rays during the Maunder Minimum Based on 39 AR
N. Bhandari, H. R. Prabhakara, T. Raman
  1041

Classification of the Lunar Surface Using Orbital Altimetry, Geochemistry and Geology Data
M. J. Bielefeld
  1042

Remote Sensing Chemistry of Geological Units
M. J. Bielefeld
  1043

Planetary Isostasy: Topographic and Gravitational Variance Spectra for the Moon, Mars, Venus and Earth
B. G. Bills
  1044

Devolatilization Mechanism for a Moon of Fission Origin
A. B. Binder
  1045

Critical Review of the Limits for the Thermally Induced Radius Change of the Moon and Mercury
A. B. Binder, M. A. Lange
  1046

A Model for the HFT Moonquakes Based on Thermoelastic Stresses in a Cooling Moon
A. B. Binder, M. A. Lange
  1047

A Possible Source Mechanism for Tidal Moonquakes
A. B. Binder, R. Meissner
  1048

Clasts from Consortium Breccia 73255; Remanents from the Early Lunar Crust?
D. P. Blanchard, J. R. Budahn
  1049

Irradiation Stratigraphy in Double Drive Tube 60009/10
G. E. Blanford, J. A. Hawkins
  1050

Erosion and Transport in Martian Outflow Channels
K. R. Blasius, J. A. Cutts
  1051

40AR/39AR Studies and Cooling Rate Determinations of Heavily Shocked Chondrites
D. D. Bogard
  1052

Noble Gases in 15010 Core Soils
D. D. Bogard
  1053

Nonaxisymmetric Models of Collapsing, Rotating Protostars
A. P. Boss, S. J. Peale
  1054

Emplacement of Permafrost Ice Layers in Young Martian Terranes: Evidence from Impact Craters
J. M. Boyce
  1055

Compositional Differentiation in Planetary Flood Basalts
J. C. Brannon, L. A. Haskin, J. C. Green
  1056

The Effect of Strain Rate on the Stiffness and Compressive Strength of Lunar Analogues
N. S. Brodsky, J. C. Getting, H. A. Spetzler
  1057

Meteorite Mining on the Ocean Floor
D. E. Brownlee, L. B. Pilachowski, P. W. Hodge
  1058

Calculational Comparisons of Explosion and Impact Cratering in Two-Dimensions Using Barringer Crater as a Phototype
J. B. Bryan, D. E. Burton, L. A. Lettis
  1059

Particle-Track Record of Some Antarctic Achondrites
R. K. Bull, S. A. Durrani
  1060

Thermal Metamorphism (SHOCK?) and Hydrothermal Alteration in C3V Meteorites
T. E. Bunch, S. Chang
  1061

How much are Early Terrestrial Anorthosites Analogues of Lunar Anorthosites?
K. Burke
  1062

Open Circuited Coaxial Resonator for High Sensitivity Dielectric Measurementsapplication to Lunar Soil 70051-20
H. E. Bussey
  1063

Martian Lavas - Reconnaissance Experiments on a Model Ferro-Picrite Composition
G. Bussod, T. R. McGetchin
  1064

Spectral Reflectance Images of Lunar Cores: New Resources
P. Butler, A. Goldberg, C. Pieters, S. Waltz, S. Nagle
  1065

Sm-Nd Study of Pristine KREEP Basalt 15386
R. W. Carlson, G. W. Lugmair
  1066

Evolutions of the Fluxes of Planet-Crossing Objects due to Planetary Close Encounters
A. Carusi, G. B. Valsecchi
  1067

Runaway Tidal Heating of IO
P. Cassen, S. J. Peale, R. T. Reynolds
  1068

Similitude Requirements in Model Meteoritic Impact Experiments
A. J. Chabai
  1069

A Thermal Evolution Model for the Moon
S. Chacko, J.-Cl. de Bremaecker
  1070

Sub-Kilometer Lunar Craters: Origins, Ages, Processes of Degradation, and Implications for Mare Basalt Petrogenesis
C. R. Chapman, J. C. Aubele, W. J. Roberts, J. A. Cutts
  1071

Preliminary Studies of Uranium Isotopic Composition in Chondritic Meteorites
J. H. Chen, G. R. Tilton
  1072

Lead Isotope Systematics of Three Taurus-Littrow Mare Basalts
J. H. Chen, G. R. Tilton, J. M. Mattinson
  1073

Apollo 15 Deep Drill Core: Trace Element and Metallic Iron Abundances in Size Fractions of Sample 15002,170
C.-L. Chou, G. W. Pearce
  1074

The Activity of H2O in Supercritical Fluids: H20-CO2 at 600 Degrees and 700 Degrees at Elevated Pressures
I.-M. Chou, R. J. Williams
  1075

Mercurian Crater Rim Heights and Some Interplanetary Comparisons
M. J. Cintala, J. W. Head
  1076

Characteristics of the Cratering Process on Icy Bodies: Implications for Outer Planet Satellites
M. J. Cintala, E. M. Parmentier, J. W. Head
  1077

Scanning Auger Microporbe and Atomic Absorption Studies of Lunar Volcanic Volatiles
E. H. Cirlin, R. M. Housley
  1078

Hypervelocity Impact Craters Less than 1000 Angstroms Diameter
U. S. Clanton, D. A. Morrison
  1079

Chemical Analyses of Martian Surface Materials: Status Report
B. C. Clark, A. K. Baird
  1080

Primitive Troilite
D. D. Clayton
  1081

Oxygen Isotopic Compositions of Some Antarctic Meteorites
R. N. Clayton, T. K. Mayeda, N. Onama
  1082

Dynamic Tensile Strength of Analogs to Lunar Rocks
S. N. Cohn, T. J. Ahrens
  1083

Origin of Outer Rings around Lunar Basins
R. L. Cole, R. A. de Hon
  1084

Miniregoliths and Monte-Carlo Modeling
G. M. Comstock
  1085

Evidence for Early Volcanism in Mare Smythii
J. Conca, N. Hubbard
  1086

The Nucleosynthesis Components of Isotopic Anomalies in Allende Inclusions
G. J. Consolmagno, A. G. W. Cameron
  1087

On Protoplanets Formation via Gravitational Instabilities in a "dusty" Solar Nebula
A. Coradini, G. Magni, C. Federico
  1088

Results of the Examination of the Skylab/apollo Windows for Micrometeoroid Impacts
B. G. Cour-Palais
  1089

Viscosities and Nucleation Behaviors in the System Albite-Anorthite
D. Cranmer, C. A. Handwerker, R. Salomaa, H. Yinnon, D. R. Uhlmann
  1090

Interplanetary Basin Ring Spacing: Consequence of Gravity VS. Strength Scaling?
S. K. Croft
  1091

Proportional VS. Non-Proportional Growth of Basin-Sized Cavities: a Reconciliation
S. K. Croft
  1092

Amino Acids in the Allan Hills, Antarctica C-2 Carbonaceous Chondrite ALHA77306
J. R. Cronin, S. Pizzarello, C. B. Moore
  1093

Nuclear Particle Tracks and the Depositional and Irradiation Histories of the Apollo 17 Deep Drill Core
G. Crozaz, L. Ross
  1094

Martian Outflow Channels: Quantitative Comparison of Erosive Capacities for Eolian and Fluvial Models
J. A. Cutts, K. R. Blasius
  1095

Sulphur Solubility in Mare Basalts
P. A. Danckwerth, P. C. Hess, M. J. Rutherford
  1096

Lunar Multispectral Imaging at 2.25UM: a New Technique and First Results
D. Davies, T. V. Johnson, D. L. Matson
  1097

Collisional Physics and the Dynamical Evolution of Populations
D. R. Davis
  1098

Iron and Titanium Distribution on the Lunar Surface as Determined by Matrix Inversion of Gamma-Ray Orbital Data
P. A. Davis, J. R. Arnold
  1099

Structural Model of the Imbrium Basin
R. A. de Hon
  1100

Thickness of the Western Mare Basalt
R. A. de Hon
  1101

Mn/fe/mg Distribution Between Silicate Minerals from Upper-Mantle Peridotites: Complexities in Garnet/clinopyroxene Mn/mg Thermometer: Significance of Fe/mn Ratio in Meteorites and Moon
J. S. Delaney, R. L. Hervig, C. A. Leitch, I. M. Steele, J. V. Smith
  1102

Hydrous Minerals in Earth's Upper Mantle: Storage of Alkali Metals and Halogens: Speculations on Venus and Mars
J. S. Delaney, R. L. Hervig, J. V. Smith, J. B. Dawson, D. A. Carswell
  1103

Petrologic Heterogeneity in the Uppr Mantle of the Earth: Barren and Fertile Harzburgites: Mantle Section at Malaita. Solomon Islands: Implications for Venus and Mars
J. S. Delaney, R. L. Hervig, J. V. Smith, J. B. Dawson, P. H. Nixon
  1104

Chemistry and Possible Origin of the Apollo 15 Green Glass
J. W. Delano, A. E. Ringwood
  1105

"pristine" Highland Rocks: a Critical Evaluation
J. W. Delano, A. E. Ringwood
  1106

The Formation of Complex Impact Structures
M. R. Dence, R. A. F. Grieve
  1107

Vacuum Electroplating on the Surface of IO
A. J. Dessler, T. W. Hill
  1108

X-Ray Photoelectron Spectroscopy of Soil 74220
Yu. P. Dikov, O. A. Bogatikov, V. L. Barsukov, K. P. Florensky, A. V. Ivanov, V. V. Nemoshkalenko, V. G. Alyoshin
  1109

Some Features of Pyroxenes and Plagioclases...
Yu. P. Dikov, O. A. Bogatikov, I. A. Brytov
  1110

Remote Sensing of TIO2 on Planets and Satellites
A. Dollfus, A. Cailleux, C. T. Hoa
  1111

40AR-39AR Dating of Murchison, Allende and Leoville Whole Rock Samples
B. Dominik, E. K. Jessberger
  1112

The Predicted Irradiation Record of Asteroidal Regolith and the Origin of Gas-Rich Meteorites
J. C. Dran, J. P. Duraud, Y. Langevin, M. Maurette
  1113

A Preliminary Microanalysis of the Berkeley Gas-Rich Allende Residue
J. C. Dran, J. Klossa, M. Maurette
  1114

On the Chemical Composition of the Moon and the Eucrite Parent Body and a Comparison with the Composition of the Earth; the Case of mn, cr, and V
G. Dreibus, H. Wanke
  1115

Electrical Conductivity of Aluminous Orthopyroxene
A. Duba, M. Dennison, A. J. Irving, C. R. Thornber, J. S. Huebner
  1116

The Distribution of zr and nb Between Diopside and Coexisting Silicate Melt
J. T. Dunn, I. S. McCallum
  1117

An Analytical Model for the Regolith Evolution of Small Bodies in the Solar System
J. P. Duraud, Y. Langevin, M. Maurette
  1118

The Viking Imagery, the Early History of the Martian Satellites, and the Accretionary Tail
J. P. Duraud, Y. Langevin, M. Maurette
  1119

Analysis of Small Scale Lunar Gravity Anomalies: Implications for Crustal History
J. Dvorak, R. J. Phillips
  1120

Gravity and Magnetic Anomalies Associated with Volcanic Regions on the Moon
J. Dvorak, R. J. Phillips
  1121

Mare Serenitatis Conductivity Anomaly Detected by Apollo 16 and Lunokhod 2 Magnetometers
P. Dyal, L. L. Vanyan, W. D. Daily
  1122

Effects of Static Oxygen Burning
M. Dzizkaniec, D. Heymann
  1123

Neon-E New Limits for Isotopic Composition. Two Host Phases?
P. Eberhardt, M. H. A. Jungck, F. O. Meier, F. Niederer
  1124

Studies on the Role of CO2 and CO in Magma Genesis in Planetary Interiors
D. H. Eggler
  1125

Consortium Breccia 73255: Preliminary 39Ar-40Ar Laser Dating of Aphanite Samples
G. Eichhorn, O. B. James, J. J. McGee, O. A. Schaeffer
  1126

Eolian Landforms in Southwestern Egypt: Implications for Surface Processes on Mars
F. El-Baz, T. A. Maxwell
  1127

Some Unique Textural Features of Spinels in Allende Cais: a Possible Key Evidence for the Formational History in the Solar Nebula
A. El Goresy, K. Nagel, P. Ramdohr
  1128

Crystallization Behaviour of Ilmenite in Lunar Rocks of Endogenic and Impact Origin
W. von Engelhardt
  1129

MG Isotopic Composition of Some Interplanetary Dust Grains
T. M. Esat, D. E. Brownlee, D. A. Papanastassiou, G. J. Wasserburg
  1130

The Trials and Tribulations of 26AL: Evidence for Disturbed Systems
T. M. Esat, D. A. Papanastassiou, G. J. Wasserburg
  1131

Implications of an In-Depth Study of Light Noble Gases in Plagioclases of Highland Soil 61501
Ph. Etique, H. Funk, P. Horn, P. Signer
  1132

History of Black and Orange Soil from Drive Tubes 74001 and 74002
O. Eugster, P. Eberhardt, J. Geiss, N. Grogler
  1133

Comparison of Viking Lander Multispectral Images and Laboratory Reflectance Spectra of Terrestrial Samples
D. L. Evans, J. B. Adams
  1134

Non-Destructive 26 AL Measurements on Antarctic Meteorites
J. C. Evans, L. A. Rancitelli
  1135

Silicate Inclusions in Weekeroo Station: Planetary Differentiates
N. M. Evensen, P. J. Hamilton, G. E. Harlow, R. Klimentidis, R. K. O'Nions, M. Prinz
  1136

Studies of the Hydrolysable Carbon and Finely Divided Iron in Separates from Highland Soil 68501
A. E. Fallick, L. R. Caroliner, A. J. T. Jull, C. T. Pillinger
  1137

Some Peculiarities of Geochemistry of Impactites of Janisjarvi, S-W Karelia, and Kara, Polar Ural, Astroblemes
V. I. Feldman, L. B. Granovsky, L. V. Sazaonova, N. N. Nikishina, T. G. Butenko, I. G. Naumova
  1138

CARBON-14 in Lunar Samples and in Stony Meteorites
E. L. Fireman
  1139

Modelling of Metallic Stalks Growth in Vacuum by the Vls-Growth Mechanism
A. V. Fisenko, A. K. Lavrukhina
  1140

Major Element and Petrographic Correlations in the Silicate Portions of Mesosiderites
R. J. Floran
  1141

Microcharacterization of "brownlee" Particles: Features which Distinguish Interplanetary Dust from Meteorites?
P. Fraundorf, J. Shirck
  1142

Bonding and Reactions during Accretion of Ordinary Chondrites: I. Bjurbole
K. Fredriksson, A. F. Noonan, J. Nelen, R. H. Beauchamp
  1143

Phreatic Eruptions on Mars
H. V. Frey, S. A. Chase, B. Lowry
  1144

Large Impact Basins on Mercury: Implications for Relative Crater Production Rates
H. V. Frey, B. L. Lowry
  1145

Noble Gas Fractionation during Synthesis of Carbonaceous Matter
U. Frick, R. Mack, S. Chang
  1146

History of the Apollo 17 Deep Drill String during the Past Few Million Years
J. S. Fruchter, L. A. Rancitelli, R. W. Perkins
  1147

Planetary Cratering: Statistical Recognition of Secondary Crater Fields
M. Fulchignoni, M. Poscolieri
  1148

The NRM of Certain Mare Basalts and the Intensity of the Fields in which NRM was Acquired
M. Fuller, E. Meshkov, S. Cisowski
  1149

Equation of State of Ice and Frozen Soils
E. S. Gaffney
  1150

The Effect of Kinetics on Crystal-Liquid Partitioning in Augite
R. P. Gamble, L. A. Taylor
  1151

Tsunami Generation by Pelagic Planetoid Impact
D. E. Gault, C. P. Sonett, J. A. Wedekind
  1152

Inorganic Gas Anaylsis of Phenocrysts and Glass from Apollo 12 Basalts 12009 and 12075
E. K. Gibson, F. F. Andrawes, D. G. Graham, J. R. Delaney
  1153

A Survey of Carbon and Sulfur Abundances in Antarctic Meteorites
E. K. Gibson, J. Karsten, K. Yanai
  1154

Topographic Effects on Slumped Craters in the Lunar Highlands
A. W. Gifford, T. A. Maxwell
  1155

The Lunar Interior: a Summary Report
N. R. Goins, M. N. Toksoz, A. M. Dainty
  1156

Mercury: Supply and Loss Rates of Atmospheric HE
B. E. Goldstein, S. T. Suess
  1157

Refractory and Siderophile Element Variations among Chondrules: Evidence for Primary Compositional Differences
J. L. Gooding, T. Fukuoka, K. Keil, R. A. Schmitt
  1158

Mineralogy and Petrology of the Chervony Kut Eucrite
J. L. Gooding, M. Prinz, K. Keil
  1159

A Scenario for the Formation of the Carbonaceous Chondrites Based on Cosmogenic Clues
J. N. Goswamin, D. Lal
  1160

Depositional History of the Apollo 17 Deep Drill Core Based on Particle Track Records
J. N. Goswami, D. Lal
  1161

Adsorption of CO and n2 by Samples with Large Surface Area
D. G. Graham, D. W. Muenow, E. K. Gibson
  1162

A Study of Biotites from Allogene Breccia of Impact Crater Janisjarvi
L. B. Granovsky, V. I. Fel'Dman, N. N. Nikishina, L. V. Sazonova, T. V. Malysheva, N. P. Polyakova, A. T. Basilevsky
  1163

Mars: Preliminary Estimates of Rates of Wind Erosion Based on Laboratory Simulations
R. Greeley, S. Williams
  1164

Compositional and Petrographic Constraints on the Origin of Chainpur Chondrules
J. N. Grossman, A. Kracher, J. T. Wasson
  1165

An Experimental Calibration of Submicroscopic Textures in Lunar Pyroxenes: a Transmission Electron Microscope Study
T. L. Grove
  1166

An Experimental Study of the Crystallization of Pyroxferroite
T. L. Grove, D. H. Lindsley
  1167

The Partitioning of fe, mg, and CA Between Pigeonite and Liquid
T. L. Grove, D. H. Lindsley
  1168

A Comparison of Nucleation and Growth Behavior in Experimental and Lunar Quartz Normative Systems
T. L. Grove, G. E. Lofgren
  1169

Elgygytgyn Impact Crater, Chucotka: Shock Metamorphsim of Volcanic Rocks
E. P. Gurov, A. A. Valter, E. P. Gurova, F. I. Kotlovskaya
  1170

Magnetite-Sulfide Complexes in the Allende Meteorite
S. E. Haggerty, B. M. McMahon
  1171

Antarctic Meteorites: Petrology and Chemistry of 77001, 77002, and 77299
S. E. Haggerty, S. B. Simon, J. M. Rhodes
  1172

The Variation of Iron Concentration in the Lunar Highlands
E. L. Haines, A. E. Metzger
  1173

Central Peaks in Lunar Craters: Morphology and Morphometry
W. Hale, J. W. Head
  1174

Chronology and Chemistry of Parnallee (LL-3) Chondrules
P. J. Hamilton, N. M. Evenson, R. K. O'Nions
  1175

Minor Elements in Plagioclase and Mafic Minerals from Lunar Plagioclase-Rich Rocks
E. C. Hansen, I. M. Steele, J. V. Smith
  1176

Are M-Type Asteroids Metal Cores? Evidence from Lightcurve Data
A. W. Harris
  1177

A New Class of Planetesimal Collisions and a Possible Confirmation
W. K. Hartmann
  1178

Silicate "fog" from Lunar Impact Cratering Events
J. B. Hartung
  1179

Helium, Neon, and Argon on an Exposed Lunar Surface by Laser Probe Mass Spectrometry
J. B. Hartung, G. Eichhorn, H. W. Muller, O. A. Schaeffer
  1180

Impact Melt Volumes Associated with Lunar Craters
B. R. Hawke, J. W. Head
  1181

Multispectral Mapping of the Apollo 15-APENNINE Region: the Identification Distribution, and Characterization of Regional Pyroclastic Deposits
B. R. Hawke, D. Maclasky, T. B. McCord
  1182

Lava Flooding of Early Planetary Crusts: Geometry, Thickness, and Volumes of Flooded Impact Basins
J. W. Head
  1183

Lava Flooding of Early Planetary Crusts: Geometry Thickness, and Volumes of Flooded Lunar Highland Terrain
J. W. Head
  1184

Serenitatis Multi-Ringed Basin: Regional Geology and Basin Ring Interpretation
J. W. Head
  1185

Alphonsus-Type Dark-Halo Craters: Morphology, Morphometry, and Eruption Conditions
J. W. Head, L. Wilson
  1186

Archean Ultramafic Pyroclastic Deposits: the Use of Lunar Deposits to Resolve Some Terrestrial Problems
G. Heiken
  1187

Secular Resonances and the Origin of Eccentricities of Mars and the Asteroids
T. A. Heppenheimer
  1188

Electromagnetic Thermal Evolution in the Early Solar System
F. Herbert, C. P. Sonett
  1189

Identification of Pristine Lunar Highland Rocks: Criteria Based on Mineral Chemistry and Stability
C. T. Herzberg
  1190

Solubility of Olivine in Lunar and Eucritic Basalts: an Ionic Model
C. T. Herzberg
  1191

The Composition and Origin of Metal in Howardites
R. H. Hewins
  1192

The Pyroxene Chemistry of Four Mesosiderites
R. H. Hewins
  1193

Isotopic Compositions of Xenon from Explosive Carbon Burning: a Global Look
D. Heymann, M. Dzizkaniec
  1194

184 OS/190 OS from Supernovae
D. Heymann, M. Dzizkaniec
  1195

Effects of Orbit Recession of the Moon on the Escape of Materials from the Lunar Surface
R. R. Hodges
  1196

A Material Strength Model for Apparent Crater Volume
K. A. Holsapple, R. M. Schmidt
  1197

A Study of Lunar Nearside Magnetic Anomalies
L. L. Hood, P. J. Coleman
  1198

Loose and Compacted Soils: Two Basic Units Composing the Martian Surface?
K.-I. Horai
  1199

Near-Surface Shear Wave Velocities at the Apollo Landing Sites
P. Horvath, G. V. Latham, H. J. Dorman
  1200

The Transient Cavity of the Ries-Crater Germany
F. Horz, R. Ostertag
  1201

Glass Production in Massive Versus Porous Basalt
F. Horz, R. B. Schaal
  1202

Predicting Major Element Mineral/melt Equilibria
C. J. Hostetler, M. J. Drake
  1203

A Comparison of Regolith Evolution on Asteroids and the Moon
K. R. Housen, R. Greenberg, C. R. Chapman, L. L. Wilkening
  1204

Early Irradiation of Asteroidal Material: an Absorbing Problem
K. R. Housen, L. L. Wilkening
  1205

X-Ray Photoemission Studies of the Surface Composition of Lunar Impact Glass Samples Including 12054
R. M. Housley, R. W. Grant
  1206

On the Bounds of the Heat Production Rate Within the Moon
A. T. Hsui
  1207

The Diverse AL Concentrations of Mare Basalts
N. Hubbard
  1208

An Error Analysis of Orbital X-Ray Fluorescence Data
N. Hubbard, J. E. Keith
  1209

Mars: Possible Occurrence of Near-Surface Liquid H2O Brines in the SOLIS Lacus Region (-25 Degrees, 85 Degrees)
R. L. Huguenin
  1210

Sliva IZ Piroga: K/ar Evidence from Luna 20 Rocks for Lunar Differentiation Prior to 4.51 AE ago
J. C. Huneke, G. J. Wasserburg
  1211

a Three-Pyroxene Achondrite from Allan Hills, Antarctica dn its Pyroxene Geothermometry
T. Ishii, H. Takeda, K. Yanai
  1212

Luna 24 Regolith Core: Magnetic Susceptibility as a Stratigraphy Indicator
A. V. Ivanov, E. S. Gorshkov
  1213

On the Problem of Central Mounds/peaks Formation in Impact Craters: Observations and Simulation
B. A. Ivanov, A. T. Basilevsky
  1214

The Abundances of Major, Minor and Trace Elements in the Earth's Mantle as Derived from Primitive Ultramafic Nodules
E. Jagoutz, H. Palme, H. Baddenhausen, K. Blum, M. Cendales, G. Dreibus, B. Spettel, V. Lorenz, H. Wanke
  1215

The History of an Atmosphere of Impact Origin
B. M. Jakosky, T. J. Ahrens
  1216

Consortium Breccia 73255: Genesis and History of Two Coarse-Grained "norite" Clasts
O. B. James, J. J. McGee
  1217

Ringwoodite: Complex Aggregate Misidentified as a High-Pressure Spinel Structure
R. Jeanloz
  1218

Equation of State of Lunar Anorthosite and Anorthite, Criteria for Impact Melting and Vaporization
T. Ahrens, R. Jeanloz
  1219

Ancient Pink-Spinel Troctolitic Basalt in Apollo 17 Breccia 73215
E. K. Jessberger
  1220

Further K-Ar Ages of Allende Inclusions
E. K. Jessberger, B. Dominik
  1221

Inert Gases in Apollo 17 Soils
J. L. Jordan, S. Lakatos, D. Heymann
  1222

CL and P2O5 in Mineral Separates from a Lunar Basalt
S. Jovanovic, G. W. Reed
  1223

Lunar Regolith Evolution: a Low-Temperature Volatile-Element Perspective
S. Jovanovic, G. W. Reed
  1224

Trace Elements in Allende Carbon-Residue Related Phases-A Contamination Control Experiment
S. Jovanovic, G. W. Reed
  1225

Ion Microprobe Study of Sputtering Rates of Minerals
A. J. T. Jull, G. C. Wilson, J. V. P. Long, S. J. B. Reed, C. T. Pillinger
  1226

Unusual Chondritic Meteorites Anc Clasts: Elemental Fractionations and Relationships to the Carbonaceous Chondrite Groups
G. W. Kallemeyn, J. T. Wasson
  1227

Relative Velocities of Planetesimals
W. M. Kaula
  1228

Comparison of Theoretical and Observed Microwave Brightness Temperature Maps of the Moon
S. J. Keihm, B. L. Gary
  1229

Evidence of 107PD in the Early Solar System
W. R. Kelly, G. J. Wasserburg
  1230

Fractionation of Refractory Elements in Chondritic Meteorites
J. F. Kerridge
  1231

Carbon, 13C, N and he in Grain Size Fractions Sieved in Liquid Argon
J. F. Kerridge, I. R. Kaplan
  1232

The Role of Volatiles in the Cratering Process
S. W. Kieffer, C. H. Simonds
  1233

Solar Wind Noble Gas Distribution in Lunar Ilmenites and Correlated Element Fractionation
J. Kiko, M. Warhaut, T. Kirsten
  1234

Provenance of Metal and Melt Rock Textures in the Bununu Howardite
L. C. Klein, R. H. Hewins
  1235

Element Distributions among Spinel and Ilmenite Phases in the Systems FEO-CR2O3-TIO2, FEO-AL203-TIO2 and FEO-MGO-TIO2
B. Knecht, E. Woermann, A. El Goresy
  1236

Characterization of the Basic Types of Lunar Highland Breccias by Quantitative Textural Analysis
H.-D. Knoll, D. Stoffler
  1237

Iron Group Cosmic Ray Tracks in the Allende Olivines-Evidence of Complex Exposure History
N. N. Korotkova, A. K. Lavrukhina, V. P. Perelygin
  1238

Laser Vaporization of Chondrites
B. K. Kothari, J. Herndon
  1239

Noble Gass Trapping during Condensation: a Laboratory Study
B. K. Kothari, K. Marti, S. Niemeyer, S. Regnier, J. R. Stephens
  1240

Re-Examination of the Lunar Seismic Velocity Structure Based on the Complete Data Set
J. Koyama, Y. Nakamura
  1241

Trace and Major Elements in Grain Size Fractions of Two Strata of Drive Tube 74001
U. Krahenbuhl, H. R. von Gunten, D. Jost, G. Meyer, F. Wegmuller
  1242

The Apollo 17 Drill Core. Part II: Comparative Modal Petrology of the >20 Micrometer and 20-10 Micrometer Size Fractions
T. C. Labotka, D. T. Vaniman, J. J. Papike, S. Simon
  1243

Estimation of Shock Pressure in Minerals of Shocked Rocks
P. Lambert
  1244

Impact Activity at the Present Surface of the Moon
M. A. Lange, T. J. Ahrens
  1245

Impact Melting during the First 1.5 B.Y. of Lunar History
M. A. Lange, T. J. Ahrens
  1246

Refractory Element Fractionation
J. W. Larimer
  1247

Chemical Study of Size Fractions of Apollo 17 Deep Drill Cores 70005, 70004, and 70003
J. C. Laul
  1248

On Results of Investigation of Pre-Atmospheric Sizes and Orbits of Meteorites
A. K. Lavrukhina, G. K. Ustinova
  1249

The Intercrater Plains of Mercury
M. A. Leake
  1250

A New Member of the "fun" Family
T. Lee, W. A. Russell, G. J. Wasserburg
  1251

Minor Elements in Pallasites: Zoning in Springwater Olivine
C. A. Leitch, I. M. Steele, I. D. Hutcheon, J. V. Smith
  1252

On the Core of the Moon
B. J. Levin
  1253

Dynamo Amplification of Ambiant Magnetic Fields
E. H. Levy
  1254

Ferrichromite: a Major Host Phase of Isotopically Anomalous Noble Gases in Primitive Meteorites
R. S. Lewis, L. Alaerts, E. Anders
  1255

Isotopic Anomalies in the Orgueil Meteorite: Neon-E S-Process xe, and Ccfxe
R. S. Lewis, L. Alaerts, E. Anders
  1256

Observations of Regions of Strong Surface Magnetic Field in the Lunar Mare
R. P. Lin
  1257

Electrochemical Characteristics of Molten Lunar Basalt Analogs
D. J. Lindstrom, L. A. Haskin
  1258

The Effect of Nucleation Kinetics on the Composition of Pyroxene Grown in Cooling Experiments on Apollo 15 Quartz Normative Basalts
G. E. Lofgren, R. W. Brown, D. P. Smith, T. L. Grove
  1259

Pyroxene Liquidus Fields in Basaltic Liquids
J. Longhi, A. E. Boudreau
  1260

REE in the Magma Ocean: Magma Mixing; the Anorthosite Trend
J. Longhi, A. E. Boudreau
  1261

Refractory Oxide, Titanate, Niobate, and Silicate Accessory Mineralogy of Some Type B Ca-Al Inclusions in the Allende Meteorite
J. F. Lovering, D. A. Wark, D. K. B. Sewell
  1262

Mare Elevations and Ages
B. K. Lucchitta, J. M. Boyce
  1263

Ridges and Scarps in the Equatorial Belt of Mars
B. K. Lucchitta, J. L. Klockenbrink
  1264

A Chemical Review of the Various Types of Lunar Low K Basalt
M.-S. Ma, R. A. Schmitt
  1265

Chemistry of Lithic Fragments from the Apollo 17 Drill Sections 70004 and 70006-I
M.-S. Ma, R. A. Schmitt
  1266

Chemistry of a New Type of Apollo 11 Low-K Mare Basalt
M.-S. Ma, R. A. Schmitt
  1267

Luna 16 Basalts and Breccias: New Chemical and Petrologic Data
M.-S. Ma, R. A. Schmitt, R. L. Neilsen, R. D. Warner, G. J. Taylor, K. Keil
  1268

Composition, Petrography, and Genesis of Apollo 17 High-Ti Mare Basalts
M.-S. Ma, R. A. Schmitt, R. D. Warner, G. J. Taylor, K. Keil
  1269

High Resolution Transmission Electron Microscopy of the Murchison Carbonaceous Chondrite and the Kenna Ureilite
I. D. R. MacKinnon, P. R. Buseck
  1270

Preliminary Results on the Petrography and Rb-Sr Isotope Geochemistry of the Lappajarvi Impact Melt
U. Maerz, W. U. Reimold, D. Stoffler
  1271

Geology of Venus
M. C. Malin
  1272

To the Problem of the Origin of Enstatite Chondrites
T. V. Malysheva, K. I. Tobelko, D. A. Khramov, O. A. Matveeva
  1273

The Edge of the Early Solar System: Source Region for Isotopic Anomalies in Meteorites
S. H. Margolis, S. W. Falk, D. N. Schramm
  1274

Relative Ages of Martian Volcanic Centers Channels and Uplands Compared with the Moon, Mercury, PHOBOS and Deimos
H. Masursky, A. L. Dial, M. E. Strobell
  1275

Collisional Evolution of Mass-Distribution Spectrum of Planetesimals II
T. Matsui
  1276

Fluvial Landforms in Southwestern Egypt: Implications for Surface Processes on Mars
T. A. Maxwell, F. El-Baz
  1277

The Mercury Soil: Presence of fe 2
T. B. McCord, R. N. Clark
  1278

Newly Defined IR Electronic Absorption Features in Telescopic Reflectance Spectra: the Lunar Case
T. B. McCord, R. N. Clark, L. A. McFadden, C. Pieters
  1279

Kinetic Isotope Fractionation in Interstellar Medium Upper Atmosphere and Meteorites, Inferred from Model Experiments
J. L. McCrumb, N. Friedman, R. Fitzgerald, G. Arrhenius
  1280

Luna Core Spherules: Microparticle Impact Crater and Accreta Populations as Indicators of the Past Surface Environment
J. A. M. McDonnell, R. J. Allison
  1281

Regolith Maturity at the Apollo 15 Site
D. S. McKay, A. Basu, G. Waits
  1282

The Kreep-Magma Ocean Connection
G. McKay, H. Wiesmann, B. Bansal
  1283

Matrix Materials of Carbonaceous Chondrites
T. R. McKee, C. B. Moore, S. Chang
  1284

Matrix Variations in CM Chondrites
H. Y. McSween
  1285

Petrogenesis of the Allan Hills 77005 Achondrite
H. Y. McSween, L. A. Taylor, E. Stolper, R. A. Muntean, G. D. O'Kelley, J. S. Eldridge
  1286

Analytical Electron Microscopy Study of Submicroscopic Metal Particles in Glassy Constituents of 15015 and 60095 Lunar Breccias
S. Mehta, J. I. Goldstein
  1287

Submicron Sized Metal Particles in Glass Coatings of Lunar Breccia 15286
S. Mehta, J. I. Goldstein, J. J. Friel
  1288

Viscosity Limits and Possible Origin of Tidal Moonquakes
R. Meissner, J. Voss
  1289

Thermoluminescence Measurements of Antarctic Meteorites
C. L. Melcher
  1290

The Thickness of the Ancient Lunar Lithosphere
H. J. Melosh
  1291

Theoretical and Experimental Study of Crater Collapse
H. J. Melsoh, W. B. McKinnon
  1292

Thorium Concentrations in the Apenninus Region of the Moon
A. E. Metzger, E. L. Haines
  1293

A Comparison of Mare Surface Chemistry Obtained by Spectral Reflectance and Gamma-Ray Spectroscopy
A. E. Metzger, T. V. Johnson, D. L. Matson, J. R. Arnold
  1294

Grain-Size Distribution and Origin of Trace and Major Elements in Agglutinates and Minerals of Soil 75080
G. Meyer, H. R. von Gunten, A. Grutter, D. Jost, U. Krahenbuhl, F. Wegmuller
  1295

Thermal Models of Asteroids
J. W. Minear, G. Clow, C. R. Fletcher
  1296

The Nature of Asteroidal Differentiation Processes
D. W. Mittlefehldt
  1297

Eucritic Polymict Breccias from Allan Hills and Yamato Mountains, Antarctica
M. Miyamoto, H. Takeda, K. Yanai
  1298

Extinct Plutonium in the Phosphates of the Olivenza Chondrite
P. Mold, R. K. Bull, S. A. Durrani
  1299

Siderophile and Volatile Trace Elements in Breccias 73215 and 73255, and in Core 74001
J. W. Morgan, R. K. Petrie
  1300

Terrestrial Upper Mantle: Siderophile and Volatile Trace Element Abundances
J. W. Morgan, G. A. Wandless
  1301

Feo and Surface Exposure (maturity) Depth Profiles for the Apollo 11 Cores 10004 and 10005 and the Apollo 14 Cores 14211 and 14230
R. V. Morris, H. V. Lauer
  1302

Feo and Surface Exposure (maturity) Depth Profles of Cores 15010/11 (hadley Rille) and 76001 (north Massif)
R. V. Morris, H. V. Lauer
  1303

Depositional and Exposure History of the Apollo 17 Deep Drill Core
R. V. Morris, H. V. Lauer, W. A. Gose
  1304

Melt Water Generation on Mars as a Product of the Thermal Evolution of Ejecta Blankets
P. J. Mouginis-Mark
  1305

Emplacment of Martian Rampart Crater Ejecta Blankets: a Morphological Analysis
P. J. Mouginis-Mark, J. W. Head
  1306

Photoclinometric Measurements of Mercurian Landforms
P. J. Mouginis-Mark, L. Wilson
  1307

Model of the Earth's Accretive Differentiation
L. M. Mukhin, M. V. Gerasimov, Yu. P. Dikov
  1308

Chemical Trends in the Abundances of Potassium, Thorium, and Uranium in Calcium-Rich Achondrites
R. A. Muntean, G. D. O'Kelley, J. S. Eldridge
  1309


M. T. Murrell, K. Nishiizumi, J. R. Arnold
  1310

High Temperature Heating of the Allende Meteorite II. Fractionation of the Rare Earth Elements
H. Nagasawa, N. Onuma
  1311

Magnetic Properties and Paleointensity of Achondrites in Comparison with those of Lunar Surface Rocks
T. Nagata
  1312

Did Long-Term Continuous Accumulation Form 76001?
J. S. Nagle
  1313

Preliminary Description and Interpretation of Apollo 14 CORES.14211/10
J. S. Nagle
  1314

Sedimentary Petrology of the Apollo 17 Deep Drill String
J. S. Nagle, S. R. Waltz
  1315

Shallow Moonquakes: Depth, Distribution and Implications as to the Present State of the Lunar Interior
Y. Nakamura, G. V. Latham, H. J. Dorman, A. K. Ibrahim, J. Koyama, P. Horvath
  1316

Iron Phosphates in Metal Particle 2004-0I6 from Luna 20 Sample
M. A. Nazarov, L. S. Tarasov, A. V. Ivanov, I. D. Shevaleevsky
  1317

Olivine Coronas in Mesosiderites: Implications and Petrogenesis
C. E. Nehru, J. W. Snellenburg, S. Zucker, M. Prinz
  1318

Surface Ages of Martian Shield Volcanoes and Channels
G. Neukum, K. Hiller, J. Henkel, J. Bodechtel
  1319

Metal Depletion in the Eucrites: Evidence for a Core or for a Heterogeneous Mantle in the Eucrite Parent Body
H. E. Newsom, M. J. Drake
  1320

CA Isotopes in Allende and Leoville Inclusions
F. R. Niederer, D. A. Papanastassiou
  1321

Spectra of Heated Fe-Ti Silicate Classes: Implications to Remote Sensing Measurements of Planetary Surfaces
D. A. Nolet, R. G. Burns, S. L. Flamm, J. R. Besancon
  1322

Thermal and Mechanical History of Granulated Norite and Pyroxene Anorthosite Clasts in Breccia 73255
G. L. Nord, J. J. McGee
  1323

Luna 24 VLT Basalts: Case against Near-Surface Fractionation
M. D. Norman, G. Ryder
  1324

Chemistry and Petrology of Luna 24 Glass Chips
M. D. Norman, L. A. Taylor
  1325

Considerations of an Olivine Vitrophyre as the Parent Magma at Luna 24
M. D. Norman, L. A. Taylor
  1326

The SR and nd Isotopic Record of Apollo 12 Basalts
L. E. Nyquist, C.-Y. Shih, J. L. Wooden, B. M. Bansal, H. Weismann
  1327

The Effect of Gravity on Impact Crater Excavation Time and Maximum Depth; Comparison Wth Experiment
J. D. O'Keefe, T. J. Ahrens
  1328

Chemical Constraints on the Evolution of the Earth's Crust and Mantle
R. K. O'Nions, N. M. Evensen, P. J. Hamilton
  1329

U-Pb and K-Ar Systematics of Cataclysm and Precataclysm Lunar Impactites
F. Oberli, J. C. Huneke, G. J. Wasserburg
  1330

Impulse Radar Studies of Near Surface Geological Structure
G. R. Olhoeft
  1331

Experimental Measurements of Surface and Volume Scattering Processes at Microwave Wavelengths
G. R. Olhoeft, B. Schaefer, G. R. Johnson
  1332

Depth, Thickness and Volume of the Breccia Lens for Simple Explosion and Impact Craters
D. L. Orphal
  1333

Noble Gases in Fine-Grained Olivine-Carbon Assemblages from an Allende Dark Inclusion
U. Ott, S. Chang, T. Bunch
  1334

Effects of Lift Force on the Ejecta Transport
S. I. Pai, S. Menon, P. H. Schultz
  1335

The Distribution of Volatile and Siderophile Elements in the Impact Melt of Clearwater East (quebec)
H. Palme, E. Gobel, R. A. F. Grieve
  1336

Endogenic Proceses on Low-Density Satellites: Ganymede and Callisto
E. M. Parmentier, J. W. Head
  1337

Tidal Dissipation in the Galilean Satellites
S. J. Peale, P. Cassen, R. T. Reynolds
  1338

On Extraterrestrial Magnetic Minerals and Their Possible Remanent Moments
G. W. Pearce
  1339

PU-244/U-238 Ratios in Whitlockites of Ordinary Chondrites: a Possible Chronological Tool
P. Pellas, D. Storzer, T. Kirsten, J. Jordan, H. Richten
  1340

Fission and Fractionation in Lunar Xenon and the Composition of Solar Wind Xenon
R. O. Pepin, D. Phinney
  1341

Magnesium Isotopes in Hibonite-Bearing Inclusions from CM Meteorites
D. Phinney, J. D. MacDougall, B. Whitehead
  1342

Anorthosite Inclusions in Northeastern Minnesota: Remnants of Early Terrestrial Crust?
W. C. Phinney, D. Morrison, L. Ashwal, A. Cochran
  1343

Highland Basalts? Spectral Data for a Southern Highland Plains Unit
C. M. Pieters
  1344

Origin of Circular Ring Features in the Wetlands of Ontario
W. H. Pinson
  1345

Styles of Faulting and Tectonics of Thorsis
J. B. Plescia, R. S. Saunders
  1346

Geologic Evolution of the Tharsis Volcanoes
J. B. Plescia, R. S. Saunders, T. Gregory
  1347

Comminution of Agglutinates
E. W. Porter, A. Basu
  1348

Interelement Refractory Siderophile Fractionation in Ordinary and Enstatite Chondrites
E. R. Rambaldi, H. Wanke
  1349

A Comparison of Accretional Heating Models
G. A. Ransford, W. M. Kaula
  1350

Plutonium and Heavy Actinide Isotopes in Allende Inclusions
M. N. Rao, T. R. Venkatesan
  1351

Solar Cosmic Ray Produced Neon and Argon Isotopes and Particle Tracks in Apollo 16 Soils and Rocks and Their Solar Flare Exposure Ages
M. N. Rao, T. R. Venkatesan, J. N. Goswami, C. M. Nautiyal
  1352

Origin of C2, Al-Rich Meteoritic Inclusions: Implications of Isotopic Fractionations
J. Ray, D. Heymann
  1353

Sulphur Isotopes in Lunar and Meteorite Samples
C. E. Rees, H. G. Thode
  1354

Production of KR Isotopes by Spallation on Y Targets and Implications for Kr-Kr Dating
S. Regnier
  1355

Predicted Versus Observed Cosmic-Ray Produced Noble Gases in Lunar Samples: Improved KR Production Ratios
S. Regnier, C. M. Hohenberg, K. Marti, R. C. Reedy
  1356

Unequilibrated and Equilibrated Eucrites
A. M. Reid, B. M. Barnard
  1357

Petrogenetic Models for Eucrite Genesis
A. M. Reid, A. R. Duncan, A. Le Roex
  1358

One Atmosphere Melting Experiments on Ilmenite Basalt 12008
J. M. Rhodes, G. E. Lofgren, D. P. Smith
  1359

Aubrites: are they Direct Nebular Condensates?
G. Richter, R. Wolf, E. Anders
  1360

Current Drilling and Structural Studies at the Flynn Creek Impact Crater Tennessee
D. J. Roddy
  1361

Melt Inclusions in 75075--THE Problem of Anomalous Low-K Inclusions in Ilmenite Revisted
E. Roedder
  1362

Changes in the Geometric Shapes of Lunar and Mercurian Surface Features and of Asteroids
L. B. Ronca, R. B. Furlong
  1363

An Iron Core in the Moon Generating an Early Magnetic Field?
S. K. Runcorn
  1364

Thermal Effect of the Collision of Two Massive Bodies and the Initial Temperature of the Moon
E. L. Ruskol
  1365

Initial Pioneer Venus Magnetometer Observations
C. T. Russell, R. C. Elphic, J. A. Slavin
  1366

Mixing the Lunar Crust: the Components of Highlands Rocks
G. Ryder
  1367

40AR-39AR Studies of Lunar Soil 74001
K. Saito, E. C. Alexander
  1368

Reexamination of Diffusion Processes in 77115 and 77215
R. F. Sanford, J. S. Huebner
  1369

Experimentally Shocked Lunar Basalt: Massive and Particulate
R. B. Schall, T. D. Thompson, F. Horz, J. F. Bauer
  1370

Viking Photography: Assessment of Mars Radar Roughness
G. G. Schaber, K. C. Horstman, D. A. Johnson
  1371

Effects of Micrometeorite Bombardment on Cosmic Ray Ages of Stony and Iron Meteorites: Evidence for a Long Term Temporal Change in Cosmic Ray Intensity
O. A. Schaeffer, K. Nagel, G. Neukum, H. Fechtig
  1372

Estimated Viscosities of Arsia Mons Lava Flows
E. Schonfeld
  1373

Origin of Valles Marineris
E. Schonfeld
  1374

Redox Interactions in Synthetic Lunar Magmas
H. D. Schreiber
  1375

Redox Equilibria of Iron in Synthetic Basaltic Melts
H. D. Schreiber, T. Thanyasiri, H. V. Lauer
  1376

Concentration of Radioactive Heat Sources in the Moon
G. Schubert, P. Cassen
  1377

Intrusive Melting of Water/ice on Mars
P. H. Schultz, H. Glicken, T. R. McGetchin
  1378

On the Formation of Basin Secondary Craters by Ejecta Complexes
P. H. Schultz, M. H. Mendenhall
  1379

Effects of Substrate Strength on Crater Statistics: Implications for Surface Ages and Gravity Scaling
P. H. Schultz, J. Spencer
  1380

Evidence for Ancient Lunar Basalts
P. H. Schultz, P. D. Spudis
  1381

Iron in Anorthite: an Experimental Study
C. B. Sclar, R. L. Kastelic
  1382

Subsolidus Shock-Induced Reduction of FE+2 on the Moon: Evidence from Experimentally Shocked Ulvospinel
C. B. Sclar, R. L. Kastelic, J. F. Bauer
  1383

Geologic Problems in the Northern Plains of Mars
D. H. Scott
  1384

Thermal History of the Shaw Chondrite
E. R. D. Scott, R. S. Rajan
  1385

Geochemical Characterization of the Lunar Nearside Using the SKYLAB S-192 Multispectral Scanner Data
C. R. Seeger, A. E. Potter, R. H. Wolfe
  1386

Dispersion and Deposition of Volcanic Aerosols on Mars
M. Settle
  1387

Lava Rheology: Newtonian Suspension Model for Lava Flow Behavior at High Shear Rates
M. Settle
  1388

Lava Rheology: Thermal Buffering Produced by the Latent Heat of Crystallization
M. Settle
  1389

Production of Volcanic Sulfate Aerosols on Mars
M. Settle
  1390

Volume of Impact Crater Fallback Ejecta on the Earth, Moon and Venus
M. Settle
  1391

Progress Towards the Measurement of Optical Absorption in Small Particles
J. R. Shirck, W. H. Smith
  1392

Petrography and Olivine Mineral Chemistry of Chondrules and Inclusions in the Allende Meteorite
S. B. Simon, S. Haggerty
  1393

The Apollo 17 Drill CORE.PART I. Modal Petrology of the >20MM Size Fraction
S. B. Simon, J. J. Papike, D. T. Vaniman
  1394

Petrology of Impactites, Lake ST. Martin, Manitoba Impact Structure
C. H. Simonds, P. E. McGee
  1395

Mars: Large Scale Mixing of Bright and Dark Materials and Properties of Dark Material
R. B. Singer, T. B. McCord
  1396

A New Heterogeneous Accretion Model for the Inner Planets Especially the Earth
J. V. Smith
  1397

Significance of Granulite Metamorphism for Stabilization of Planetary Crust: Charnockite Formation at Kabbaldurga, S. India: Roles of CO2 and H2O; Speculations on Venus and Mars
J. V. Smith, R. C. Newton, A. S. Janardhan
  1398

Petrology of Temperature and Oxygen Fugacity Indicating Mineral Assemblages in Four Low-Grade Mesosiderites
J. W. Snellenburg, C. E. Nehru, J. B. D. Caulfield, S. Zucker, M. Prinz
  1399

Characteristics and Evolution of the Lunar Lithosphere from the Deformation of Mascon Mare Basins
S. C. Solomon, J. W. Head
  1400

Compressional Velocity Measurements for a Highly Fractured Lunar Anorthosite
C. H. Sondergeld, L. A. Granryd, H. A. Spetzler
  1401

On the Continued Search for a Metallized Lunar Core Metallized Lunar Core
C. P. Sonett, M. J. Wiskerchen
  1402

The High Frequency Electromagnetic Response of the Moon and the Shallow Bulk Electrical Conductivity
C. P. Sonett, M. J. Wiskerchen
  1403

A Technique for Determining Planetary Composition Utilizing Galactic Cosmic Ray and Solar Flare Induced Secondaries i: Characteristic Neutrons from the Lunar Surface
M. S. Spergel, O. W. Lazareth, P. W. Levy
  1404

A Technique for Determining Planetary Composition Utilizing Galactic Cosmic Ray and Solar Flare Induced Secondaries II: Characteristic Gamma Rays from the Lunar Surface
M. S. Spergel, O. W. Lazareth, P. W. Levy
  1405

Crack Growth in Lunar Analogue Glass
H. Spetzler, N. Soga, H. Mizutani
  1406

Models of an Early Lunar Dynamo
L. J. Srnka, M. H. Mendenhall
  1407

Ilmenite/armalcolite: Effects of Rock Composition, Oxygen Fugacity, and Cooling Rate
F. T. Stanin, L. A. Taylor
  1408

New 40AR-39AR Ages for Aphanites and Clasts of Consortium Breccia 73255
Th. Staudacher, B. Dominik, I. Flohs, E. K. Jessberger, T. Kirsten
  1409

Anatomy of Allende Inclusions: Mineralogy and MG Isotopes in Two Ca-Al Inclusions
I. M. Steele, I. D. Hutcheon
  1410

Thermal Alteration of Magnetic Properties of Iron and the Effect on Palaeointensity Determinations
A. Stephenson, D. W. Collinson, S. K. Runcorn
  1411

Structural Analysis of Shatter Cones from Slate Islands, Northern Lake Superior
R. M. Stesky, H. C. Halls
  1412

A Physical Model of the Lunar Near-Surface Structure
R. M. Stesky, G. W. Pearce
  1413

Genetic Classification and Nomenclature of Lunar Highland Rocks Based on the Texture and Geological Setting of Terrestrial Impact Breccias
D. Stoffler, H.-D. Knoll, U. Maerz
  1414

Topography of the Smythii Basin
P. Strain, F. El-Baz
  1415

Magnetic Fields in Solid Objects of the Solar System did they Become Magnetized in a Solar Dipole Field?
D. W. Strangway, N. Sugiura
  1416

Meteorite Impact in the Ocean
R. A. Strelitz
  1417

Stress Amplification by Weak Inclusions and the Source of Deep Moonquakes
R. Strelitz
  1418

Soil Stratigraphy and Rock Coatings Observed in Color Enhanced Viking Lander Images
E. L. Strickland
  1419

Paleointensity Studies on 70019, a Young Glass Sample from Apollo 17
N. Sugiura, Y. M. Wu, D. W. Strangway, G. W. Pearce, L. A. Taylor
  1420

Application of a Surface Explosion Cratering Model to Impact Cratering
R. P. Swift
  1421

Pyroxenes in Early Crustal Cumulates Found in Achondrites and Lunar Highland Rocks
H. Takeda, T. Ishii, M. Miyamoto
  1422

Chemical Study of an Isotopically-Unusual Allende Inclusion
T. Tanaka, A. M. Davis, L. Grossman, J. M. Lattimer, J. M. Allen, T. Lee, G. J. Wasserburg
  1423

Petrology of Apollo 17 Deep Drill Core-Iii Stratigraphy and Depositional History
G. J. Taylor, R. D. Warner, K. Keil
  1424

An Effective Sample Preparation Technique for Paleointensity Determinations at Elevated Temperatures
L. A. Taylor
  1425

Effects of Kinetics on the Crystallization Sequence of Basalts
L. A. Taylor, P. I. Nabelek
  1426

Nickel Abundances in Lunar Mare Basalts
S. R. Taylor
  1427

Relative Refractory and Volatile Element Contents of the Earth and the Moon
S. R. Taylor
  1428

Chemical Similarity Between Irghizites and Javan Tektites
S. R. Taylor, S. M. McLennan
  1429

Ancient Solar Wind in Lunar Microbreccias
M. H. Theimens, R. N. Clayton
  1430

Lunar Megaregolith Properties from Blocky Crater Studies
T. W. Thompson, W. K. Hartmann, W. J. Roberts, R. W. Shorthill, S. H. Zisk
  1431

Investigation of the Mechanics of Impact Cratering
J. M. Thomsen, M. G. Austin, S. F. Ruhl, P. H. Schultz
  1432

Seismic Q and Velocity at Depth
B. R. Tittmann, L. Ahlberg, H. Nadler, I. B. Goldberg
  1433

Simulation Experiments and Planetary Sputtering Phenomena
T. A. Tombrello
  1434

Oxygen -> Metal Charge Transfer Energies in Minerals
J. A. Tossell
  1435

A Numerical Solution to Isotopic Anomalies in Rare Gases
B. M. P. Trivedi
  1436

Sand Dunes of the North Polar Region of Mars: Mapping and Analysis
H. Tsoar, R. Greeley, R. Papson, S. Squyres
  1437

Parameterized Convection Within the Moon and the Terrestrial Planets
D. L. Turcotte
  1438

Dating Heavenly Bodies and Monte-Carlo Models
G. Turner, M. C. Enright, J. Hennessy
  1439

A Simplified Model of Glass Formation
D. R. Uhlmann, P. I. K. Onorato
  1440

Partitioning as a Cooling Rate Indicator
D. R. Uhlmann, P. I. K. Onorato, H. Yinnon, L. A. Taylor
  1441

U-Th Systematics and Uranium Isotopic Composition of Chondrites
D. M. Unruh, R. Hutchison, M. Tatsumoto
  1442

A Self-Consistent Tidal Theory for Imperfectly Elastic Bodies
W. E. van Arsdale, J. A. Burns
  1443

The Apollo 17 Drill Core. Part Iii: Comparative Mineral Chemistry of the >20 Micrometer and 20-10 Micrometer Size Fractions
D. T. Vaniman, T. C. Labotka, J. J. Papike
  1444

Deformation Maps of the Moon
R. A. Verrall, R. J. O'Connell
  1445

Vacuum Ultraviolet Reflectance Spectra of Group H Chondrites
J. K. Wagner, A. J. Cohen, B. W. Hapke, W. D. Partlow
  1446

Analysis of Craters on the Floor of Aitken
A. S. Walker, F. El-Baz
  1447

Terrestrial Basalts Revisted: the Importance of Planet Size
D. Walker, E. M. Stolper, J. F. Hays
  1448

Evidence of Solar Cosmic Ray Proton Production of Neon and Argon in Luna 20 Single Particles
J. R. Walton, D. Heymann, A. Yaniv
  1449

Non-Meteoritic Siderophile Elements in Lunar Highland Rocks: Evidence from Pristine Rocks
H. Wanke, G. Dreibus, H. Palme
  1450

Marginal Stability in Variable Viscosity Fluids
A. Warford, J.-Cl. de Bremaecker
  1451

High Resolution Depth Profiles of Solar Wind Implanted Rare Gases in Lunar Minerals and Glasses
M. Warhaut, J. Kiko, T. Kirsten
  1452

Total U-Th Mineral Ages of Three Ca-Al Inclusions in the Allende Meteorite
D. A. Wark, D. K. B. Sewell
  1453

Structural Features of Some Allende Coarse-Grained Ca-Al Inclusions: Chondrules Within Chondrules
D. A. Wark, G. J. Wasserburg, J. F. Lovering
  1454

A Model for the Lithosphere of Venus
J. L. Warner
  1455

Composition of Glasses in Apollo 17 Soil Breccias
R. D. Warner, G. J. Taylor, K. Keil
  1456

The Quest for Pristine Nonmare Rocks: a New Crop of Toisons D'or
P. H. Warren
  1457

Effects of Pressure on the Crystallization of a Moon-Sized Chondritic Magma Ocean
P. H. Warren, J. T. Wasson
  1458

I-Xe Dating of I-Bearing Phases in Allende
G. J. Wasserburg, J. C. Huneke
  1459

Formation of the Moon from Differentiated Planitesimals of Chondritic Composition
J. T. Wasson, P. H. Warren
  1460

The Relation of Lunar Highland Plains and Terra to Basin Forming Events
J. A. Watkins, S. M. Skirvin, J. M. Boyce
  1461

Solar Wind Sputtering of Planetary Atmospheres and Surfaces
C. C. Watson, P. K. Haff, T. A. Tombrello
  1462

Aubrites: Their Origin and Relationship to E Chondrites
T. R. Watters, M. Prinz
  1463

On the Fractionation of Heavy Noble Gases during the Agglutination Process
H. W. Weber, L. Schultz
  1464

Significance of the Origin of the Intracratonic Basins of North America for the Heat Budget of the Earth
P. W. Weiblen, J. L. Warner
  1465

Behavior of Dust in the Solar Nebula
S. J. Weidenschilling
  1466

Melting Relations of Portions of the System Fe-S at High Pressure and Applications to the Composition of the Earth's Core
R. F. Wendlandt, J. S. Huebner
  1467

The Unique Nature of Apollo 17 VLT Mare Basalts
S. Wentworth, G. J. Taylor, R. D. Warner, K. Keil, M.-S. Ma, R. A. Schmitt
  1468

Steady-State Velocity Distribution of a Protoplanetary Swarm
G. W. Wetherill
  1469

Magnesium and Boron Isotopes in an Allende Coarse Grained Inclusion
B. Whitehead, D. Phinney
  1470

Charting the Southern Seas: the Evolution of the Lunar Mare Australe
J. L. Whitford-Stark
  1471

The Solar Wind Half an Aeon Ago; Light Noble Gases in 15002 Core Soil Constituents
R. Wieler, H. Funk, P. Horn, P. Signer
  1472

Star and Planetary System Formation in Disks
P. J. Wiita, D. N. Schramm
  1473

Classification of Planet Crossing Asteroids
J. G. Williams
  1474

Ascent of Magma with Volatiles on the Earth and Moon
L. Wilson, J. W. Head
  1475

Lunar Volcanic Cones and Dark Mantling Deposits: Consequences of Patterns of Volatile Release
L. Wilson, J. W. Head
  1476

Anorthositic Complexes in the Early Crust of the Earth: Comparison of Mineralogy with Lunar Anorthosites
B. F. Windley, F. C. Bishop, J. V. Smith, I. M. Steele, R. C. Newton, J. S. Delaney
  1477

Comparison of Explorer 33 and Explorer 35 Magnetometers
M. J. Wiskerchen, C. P. Sonett
  1478

Siderophile and Volatile Elements in the Earth and Moon: Similar or Not?
R. Wolf, A. Woodrow, E. Anders
  1479

Orientation of Eolian Features in the North Polar Region of Mars: a Preliminary Assessment
R. W. Wolfe
  1480

Backscatter Measurements and Impacted Surfaces
M. Wolff
  1481

Cindercones on Earth, Moon and Mars
C. A. Wood
  1482

Crater Degradation Through Lunar History
C. A. Wood
  1483

Bulk Iron Contents of Highland Agglutinates
M. R. Woodcock, D. M. Fabian, C. T. Pillinger
  1484

Radiometric Ages for the Achondrites Chervony Kut, Governador Valadares and Allan Hills 77005
J. L. Wooden, L. E. Nyquist, D. D. Bogard, B. M. Bansal, H. Weismann, C.-Y. Shih, G. A. McKay
  1485

Chondritic Siderophiles: BI Confirmed and the Case for Lead
D. S. Woolum, R. Mascitelli, D. S. Burnett
  1486

Lunar and Martian Crater Classes
A. Woronow
  1487

Effects of the Orientale Impact on the Pre-Existing Crater Population
A. Woronow, R. G. Strom
  1488

Erosion on Lunar Highland Slopes: Implications for Planetary Landform Analysis
R. A. Young
  1489

I-Xe Chronology of Allende Inclusions
A. Zaikowski
  1490

An Iodine-Xenon Study of Laboratory-Synthesized Enstatite
A. Zaikowski, P. M. Jeffery, J. H. Reynolds
  1491

The Spacecraft Determined Micrometeoroid Flux and its Application to Problems in Lunar Research
H. Zook
  1492