Lunar and Planetary Institute






Eighth Lunar Science Conference

TABLE OF CONTENTS

no.

Dynamic Properties of Ilmenite-Rich Mare Basalt and the Relative Ages of Lunar Cratered Surfaces
T. J. Ahrens, I. Jackson, R. Jeanloz
  1001

Petrographic Study of Luna 20 Samples 22012 and 22013
A. L. Albee, R. F. Dymek, A. A. Chodos
  1002

Source and Magnitude of Errors in "Broad-Beam Analysis" (DBA) with the Electron Probe
A. L. Albee, J. E. Quick, A. A. Chodos
  1003

40Ar-39Ar and Rare Gas Studies of Lunar Soils
E. C. Alexander Jr., K. Saito, J. C. Dragon, M. R. Coscio Jr., R. O. Pepin
  1004

Chemical Characterization of Apollo 17 Deep Dril Cores 70007-70009
M. Z. Ali, W. D. Ehmann
  1005

Chemical Characterization of Lunar Core 60010
M. Z. Ali, W. D. Ehmann
  1006

Chemical and Optical Properties of Apollo 15 and 16 Deep Drill Core Samples as Compared to those of Apollo 15 and 16 Surface Soils from the Same Sites
M. Z. Ali, W. D. Ehmann, T. Gold, E. Bilson, R. L. Baron
  1007

Volatile Metals--Mode of Transport
R. O. Allen Jr., S. Jovanovic, G. W. Reed Jr.
  1008

Fines Photoconductivity
R. Alvarez
  1009

On Charge Transport in the Terminator's Vicinity
R. Alvarez
  1010

An Improved Lunar Moment of Inertia Determination: A Proposed Strategy
M. P. Ananda, A. J. Ferrari, W. L. Sjogren
  1011

Magnetized Regions on the Lunar Farside Detected by Electron Reflection Techniques
K. A. Anderson, R. I. Bush, R. P. Lin
  1012

Chemical Character of the Partially Flooded Smythii Basin From Al/Si Orbital X-ray Data
C. G. Andre, I. Adler, R. W. Wolfe, J. R. Weidner, J. A. Philpotts
  1013

Phantom Craters
J. C. Anselmo, D. E. Rehfuss, N. K. Kincheloe, D. Michael, S. A. Wolfe
  1014

A Crater Depth/Diameter Basis Study
J. C. Anselmo, D. E. Rehfuss, N. K. Kincheloe, D. Michael, S. A. Wolfe
  1015

Computer-Generated Maps of Lunar Composition from Gamma Ray Data
J. R. Arnold, A. E. Metzger
  1016

Molecular and Isotopic Processes in Space Condensation
G. Arrhenius, C. F. Simpson
  1017

On the Constancy of the Lunar Cratering Flux Over the Past 3.3 Billion Years
R. Arvidson, E. Guinness, C. Hohenberg
  1018

Remanent Magnetization Stratigraphy of Lunar Cores
S. K. Banerjee, D. Gingrich, J. Marvin
  1019

A Comparison of ESCA-XPS and Auger Electron Spectroscopy for the Study of the Surface Chemical Composition of Lunar Soil Samples
R. L. Baron, E. Bilson, T. Gold, R. J. Colton, B. Hapke, M. A. Steggert
  1020

The Lunar Soil from Mare Crisium: Preliminary Data (Original Russian Version)
V. L. Barsukov, C. P. Florensky
  1021

The Lunar Soil from Mare Crisium: Preliminary Data (English Translation)
V. L. Barsukov, C. P. Florensky
  1022

Preliminary Description of the Regolith Core from Mare Crisium (Original Russian Version)
V. L. Barsukov, A. V. Ivanov, M. A. Nazarov, O. D. Rode, Yu. I. Stakeev, L. S. Tarasov, K. I. Tobelko, C. P. Florensky
  1023

Preliminary Description of the Regolith Core from Mare Crisium (English Translation)
V. L. Barsukov, A. V. Ivanov, M. A. Nazarov, O. D. Rode, Yu. I. Stakeev, L. S. Tarasov, K. I. Tobelko, C. P. Florensky
  1024

Photogeologic Study of Lunar Crater Rays: Nature of Rays and Age of Crater Kepler
A. T. Basilevsky, N. N. Grebennik, I. M. Chernaya
  1025

Exposure Age and Agglutinate Content of Lunar Soils
A. Basu
  1026

Optical Microscope and Electron Microprobe Studies of Apollo 15 Deep Drill Core
A. Basu, J. F. Bower
  1027

Petrographic Investigation of Sample 10003, the Oldest Mare Basalt
D. W. Beaty, R. F. Dymek, A. L. Albee
  1028

Solar Wind Nitrogen as an Indicator of Regolith History
R. H. Becker, R. N. Clayton
  1029

Crystal-Field Spectra of Fassaite from the Angra DOS Reis Meteorite
P. M. Bell, H. K. Mao
  1030

Optical Spectra of Thin Metallic Coatings with Application to the Spectra of Lunar Soil Samples
P. M. Bell, H. K. Mao
  1031

Iron and Magnesium Distribution in Orthopyroxenes as Cooling Rates Indicator; Application to Lunar Rocks
E. L. Belokoneva, M. A. Simonov, N. R. Khisina, V. I. Ivanov, E. S. Makarov
  1032

Laboratory Studies of Pu-U-Th Fractionation
T. M. Benjamin, D. S. Burnett, A. Ng, M. G. Seitz
  1033

Argon Ages for Imbrium Consortium Samples 14064 and 15405
T. Bernatowicz, C. M. Hohenberg, B. Hudson, B. M. Kennedy, C. J. Morgan, F. A. Podosek
  1034

Solar Flare Induced Al-26 in Short Exposure Age Rocks
N. Bhandari
  1035

Lunar Olivine Normative Basalts: Cooling Rate Experimentation
A. S. Bianco, L. A. Taylor
  1036

Solar Wind Erosion of Lunar Dust Grains: A Progress Report
J. P. Bibring, J. Chaumont, J. C. Dran, F. Lalu, Y. Langevin, M. Maurette, B. Vassent
  1037

Petrology of 78155: an Early, Thermally Metamorphosed Polymict Breccia
C. E. Bickel, J. L. Warner
  1038

Survey of Lunar Plutonic and Granulitic Lithic Fragments
C. E. Bickel, J. L. Warner
  1039

Lunar Surface Chemistry of Regions Common to the Orbital X-ray and Gamma-ray Experiments
M. J. Bielefeld
  1040

Fission Origin for the Moon: Accumulating Evidence
A. B. Binder
  1041

Effects on Composition of Maturation in a Well Documented, Isochemical Suite of Soils from Drive Tube 60009/10
D. P. Blanchard, J. C. Brannon
  1042

Major and Trace Element Abundances in Anorthositic Gabbro Clasts and a Clast of K-Rich Felsite from Consortium Breccia 73215
D. P. Blanchard, J. C. Brannon, J. W. Jacobs, L. A. Haskin
  1043

Particle Track Densities in Double Drive Tube 60009
G. E. Blanford, D. S. McKay, G. C. Wood
  1044

Soil Maturation and Grain Size-Dependence of Trapped Solar Gases
D. D. Bogard
  1045

Ring-Moat Depressions on the Lunar Maria: Buried Impact Craters and Their Implications to Crater Erosion Models
J. M. Boyce, G. G. Schaber
  1046

Fractionation of Th, PU and CM in the Early History of the Solar System: Implications for Dating Techniques
W. V. Boynton
  1047

On the Amounts of Volatile Metals and Rare Gases Actually on Surfaces of Lunar Soil Grains
W. V. Boynton, C. E. McEwing, J. T. Wasson
  1048

New Evidence for Textural Magnetization (TXM) in Lunar Rocks Synthetic Analogs and Meteorites
A. Brecher
  1049

Interplanetary Dust; A New Source of Extraterrestrial Material for Laboratory Studies
D. E. Brownlee, D. A. Tomandl, E. Olszewski
  1050

He and NE Depths Profiles in Lunar Soil Particles
K. Buechler, J. Kiko, T. Kirsten, T. Plieninger, M. Warhaut
  1051

Geology of the Luna 24 Landing Site
P. Butler Jr., D. A. Morrison
  1052

Porosity, or Its Absence, in Lunar and Terrestrial Samples
D. A. Cadenhead, M. G. Brown
  1053

Palaeoatmospheric Argon in Rhynie Chert
P. H. Cadogan
  1054

Mercury Cratering: Physiographic Units Statistical Recognition and Their Evolutive History
A. Carusi, M. Fulchignoni, M. Poscolieri, C. Caputo, R. Casacchia, M. Parotto
  1055

Vertical Section of Ries Sedimentary Ejecta Blanket as Revealed by 1976 Drill Cores from Otting and Itzing
E. C. T. Chao, R. Huettner, H. Schmidt-Kaler
  1056

Petrology of Consortium Sample 67455, From a White-Matrix Breccia Boulder Near the Rim of North Ray Crater, Descartes
E. C. T. Chao, J. A. Minkin, C. L. Thompson
  1057

Abundance and Nature of Inclusions in Ries Impact Melt Glasses
E. C. T. Chao, C. L. Thompson, J. A. Minkin
  1058

Spectral Reflectance of Lunar Highland Rocks
M. P. Charette, J. B. Adams
  1059

The Detection of Fra Mauro Basalts in the Lunar Highlands by Remote Spectral Reflectance Techniques and Implications for Crustal Stratigraphy
M. P. Charette, S. R. Taylor, J. B. Adams, T. B. McCord
  1060

Moonquake and Tidal Stresses: A Further Look
C. H. Cheng, M. N. Toksoez
  1061

Interplanetary Comparisons of Fresh Crater Morphology: Preliminary Results
M. J. Cintala, C. A. Wood, J. W. Head, T. A. Mutch
  1062

An Atomic Absorption Study of Volatile Trace Metals in Lunar Samples
E. H. Cirlin, R. M. Housley
  1063

On the Intensity of Ancient Lunar Magnetic Fields
S. M. Cisowski, M. Fuller, C. Hale
  1064

Nitrogen Spallation Ages of Lunar Soil Samples
R. N. Clayton, R. H. Becker
  1065

Anomalous Anomalies in Carbonaceous Chondrites
R. N. Clayton, T. K. Mayeda
  1066

Sedimentary Structures and Depositional Sequences in Apollo 15 Mare and Highlands Cores
N. K. Coch
  1067

Rb-Sr Systematics in Clasts and Aphanites
W. Compston, J. J. Foster, C. M. Gray
  1068

New Techniques for Simulation of Lunar Surface Processes
G. M. Comstock
  1069

Found: Solar Iron Group Tracks in Microcrater Glass
G. M. Comstock, J. B. Hartung
  1070

Accretion Processes in a Protoplanetary Nebula: Collisions and Condensation of Melted Grains
A. Coradini, G. Magni, C. Federico
  1071

Photoelectric Charging and Pseudoconductivity of Localized Sunlit Areas on the Moon
D. R. Criswell, B. R. De
  1072

Volumetric Studies of Lunar Craters: Evidence for a Megaregolith
S. K. Croft
  1073

Irradiation History of Lunar Cores and the Accumulation of the Regolith
G. Crozaz, S. Dust
  1074

Thermal Annealing of Nuclear Particle Tracks in Minerals and the Chemical Composition of Very Heavy Cosmic Rays
E. Dartyge, J. C. Dran, J. P. Duraud, Y. Langevin, M. Maurette
  1075

Charged-particle Track and Micrometeorite-Crater Studies on Apollo 15 Green-Glass Spherules
I. W. Davie, R. K. Bull, S. A. Durrani
  1076

The Collisional Evolution of Asteroid Compositional Classes
D. R. Davis, C. R. Chapman
  1077

Thermal Physics Relevant to the Condensation of Meteoritic Solids
B. R. De
  1078

Mare Humorum and Mare Nubium: Basalt Thickness and Basin Formation History
R. A. de Hon
  1079

Small Asteroids and Collisional Fragments
J. Degewij
  1080

The Highlands Component in the Apollo 17 Soils
J. W. Delano
  1081

4.2-4.3 AE Soil Fragments: Equilibrated or Unequilibrated, Poly-Component Systems?
J. W. Delano, A. E. Bence
  1082

Are Some Asteroids Pieces of Metal?
A. Dollfus, M. Duseaux, J.-C. Mandeville
  1083

Applicability of P-T Diagrams to Mare Basalt Genesis
E. Dowty
  1084

Asteroid 4 Vesta: Possible Bulk Composition Deduced from Geochemistry of Eucrites
M. J. Drake, G. J. Consolmagno
  1085

Coschemical Constraints on Planetary Compositions: Earth, Moon, Eucrite Parent Body
G. Dreibus, H. Kruse, W. Rammensee, B. Spettel, H. Waenke
  1086

Cosmic Ray Exposure History at Taurus-Littrow
R. J. Drozd, C. M. Hohenberg, C. J. Morgan, F. A. Podosek, M. L. Wroge
  1087

Petrography and Petrology of Apollo 12 Ilmenite Basalts 12005 and 12045
M. A. Dungan, R. W. Brown, R. M. Meyers
  1088

Lyoluminescence and Surface Interaction Phenomena of Lunar Fines
S. A. Durrani, N. A. Atari, K. V. Ettinger
  1089

68815 Revisited-The Track Profile
S. Dust, G. Crozaz
  1090

The Subsurface Structure of Large Young Lunar Craters
J. Dvorak, R. J. Phillips
  1091

Global Lunar Crust: Electrical Conductivity and Thermoelectric Origin of Remanent Magnetism
P. Dyal, C. W. Parkin, W. D. Daily
  1092

The Role of Silicate Immiscibility: Constraints from a Terrestrial Example
R. F. Dymek, J. E. Quick, A. L. Albee
  1093

Chemical Characterization of Lunar Core 60003
W. D. Ehmann, M. Z. Ali, T. I. M. Hossain
  1094

The 1973 Ries-Research Deep Drill Core: Metal Condensates from the Impacting Body Below the Crater Floor
A. El Goresy, E. C. T. Chao
  1095

Apollo 17 TiO2-Rich Basalts: Spinel Chemical Bimodality in the Two Major Basalt Types and Genetic Significance of Inverted Zoning of Chromian Ulvospinel
A. El Goresy, P. Ramdohr
  1096

Large Scale Geologic Trends in Lunar Bedrock--Fourier Analysis of Planimetric Crater Shape
D. T. Eppler, D. Nummedal, R. Ehrlich
  1097

The d18O, d17O, d30Si, and d29Si of Oxygen and Silicon in Stony Meteorites and Allende Inclusions
S. Epstein, H.-W. Yeh
  1098

Primary and Secondary Impact Crater Phenomena on an Apollo 12 Sample
H. Fechtig, K. Nagel, V. Staehle, E. Schneider, G. Neukum, N. Groegler
  1099

The Isostatic State of the Lunar Appennines and Regional Surroundings
A. J. Ferrari, D. L. Nelson, W. L. Sjogren, R. J. Phillips
  1100

Direct Measurement of Surface Carbon Concentrations
C. Filleux, T. A. Tombrello, D. S. Burnett
  1101

Carbon-14 in Lunar Soil (Temperature-Release and Size-Fraction Study)
E. L. Fireman, J. de Felice, J. D. Amico
  1102

First Panoramas of the Venusian Surface
C. P. Florensky, A. T. Basilevsky, G. A. Burba, O. V. Nikolaeva, A. A. Pronin, V. P. Volkov, L. B. Ronca
  1103

Negative Search for Fission Tracks from Superheavy Elements in Allende
G. Flynn, P. Fraundorf, J. Shirck, R. M. Walker
  1104

A Model of the Magnetic Field in the Solar Nebula
J. W. Freeman
  1105

Anomalous Krypton in the Allende Meteorite
U. Frick
  1106

Ancient Carbon and Noble Gas Fractionation
U. Frick, S. Chang
  1107

Planetary Noble Gas Components in Orgueil
U. Frick, R. K. Moniot
  1108

On the Host Phases for Planetary Noble Gases in Allende
U. Frick, J. H. Reynolds
  1109

Limits to Tidal Control on Lunar Asymmetry
S. Friedlander, J. V. Smith
  1110

The Relationship Between Lunar Metal Particles and Phosphate Minerals
J. J. Friel, J. I. Goldstein
  1111

The Effect of Carbon on Phosphate Reduction
J. J. Friel, J. I. Goldstein, A. D. Romig Jr.
  1112

Exposure Age and Other Information on Lunar Surface Material and Meteorites from 53Mn Measurements
J. S. Fruchter, J. C. Laul, L. A. Rancitelli, R. W. Perkins
  1113

Gardening of Lunar Regolith and Disturbances in the Upper Portion of Lunar Regolith Cores
J. S. Fruchter, L. A. Rancitelli, R. W. Perkins
  1114

Apollo 17 Roy Glasses
R. M. Fruland, R. V. Morris, D. S. McKay
  1115

Genesis of Howardites as Mixtures of Eucrites and Diogenites
T. Fukuoka, M.-S. Ma, R. A. Schmitt
  1116

Asteroid Surface Materials: Mineralogical Characterizations and Cosmological Implications
M. J. Gaffey, T. B. McCord
  1117

The Distribution of Zr and HF in Lunar Minerals and Rock 12013
A. N. Garg, M. Z. Ali, W. D. Ehmann
  1118

Structural Studies on Tranquillityite and Related Synthetic Phases
B. M. Gatehouse, I. E. Grey, J. F. Lovering, D. A. Wark
  1119

The Role of Sulfur in the Apollo 12 Basalts
E. K. Gibson Jr., F. Andrawes
  1120

The Structure of the Lunar Interior as Determined from Seismic Data
N. R. Goins, A. M. Dainty, M. N. Toksoez
  1121

Electrical Properties at 450 MHz of Apollo 15 and 16 Deep Drill Core Samples and Surface Soil Samples at the Same Sites
T. Gold, E. Bilson, R. L. Baron
  1122

Consequences of Possible Lunar FeS Distributions: Cores, Pods, or Interstitial Veins
B. E. Goldstein, R. J. Phillips
  1123

Solar Cosmic Ray Produced Noble Gas Isotopes and Fossil Tracks in Lunar Soil, 14163
K. Gopalan, J. N. Goswami, M. N. Rao, K. M. Suthar, T. R. Venkatesan
  1124

Microstratification in Apollo 15 and 16 Core Tubes: Implications to Regolith Dynamics
J. N. Goswami, J. Borg, Y. Langevin, M. Maurette, P. B. Price
  1125

Particle Track Correlation Studies in Lunar Soils: Long Term Fluctuations in Ancient Meteoritic Flux in Lunar Space
J. N. Goswami, D. Lal
  1126

Volcanic Features of the Smythii Basin
R. Greeley, P. H. Schultz, C. L. Wilbur
  1127

Orbital Resonances in the Planet-Building Process
R. Greenberg, W. K. Hartmann, C. R. Chapman
  1128

Chemical Studies of Condensates in the Murchison Type 2 Carbonaceous Chondrite
L. Grossman, A. M. Davis, E. Olsen, P. M. Santoliquido
  1129

Cooling Histories of Apollo 15 Quartz Normative Basalts
T. L. Grove
  1130

Pyroxenes as Recorders of Lunar Basalt Petrogeneis Revisited: an Experimental Study of Pyroxene-Liquid Interaction
T. L. Grove, A. E. Bence
  1131

Youngest and Oldest Mare Basalts: The Temporal Extent of Mare Filling
S. Guggisberg, P. Eberhardt, J. Geiss, N. Groegler, A. Stettler, G. M. Brown, A. Peckett
  1132

Refinement of the Ti-Cosmothermometer in the Allende Meteorite and the Significance of a New Mineral, R2+Ti3O7, in Association with Armalcolite
S. E. Haggerty
  1133

Apollo 14: Oxide, Metal and Olivine Mineral Chemistries in 14072 with a Bearing on the Temporal Relationships of Subsolidus Reduction
S. E. Haggerty
  1134

X-ray Diffraction Studies of Shocked Materials
R. E. Hanss, B. R. Montague, C. Galindo, F. Hoerz
  1135

The Albedo of Lunar Soil
B. Hapke
  1136

The Effect of Tidal Friction on the Origin and Thermal Evolution of the Moon
A. W. Harris
  1137

Experiments on Early Growth of Moon and Planets
W. K. Hartmann
  1138

Microcrater Studies on 60015 Do Not Support Time Variation of Meteoroid Flux
J. B. Hartung, J. J. Breig, G. M. Comstock
  1139

Helium, Neon, and Argon on Sunlit and Shaded Surfaces of Lunar Rock 12054 by Laser Probe Mass Spectrometry
J. B. Hartung, T. Plieninger, H. W. Mueller, O. A. Schaeffer
  1140

Dispersions in REE Among Lunar and Terrestrial Basalts
L. A. Haskin, J. W. Jacobs, J. C. Brannon
  1141

Impact Melt in Lunar Crater Interiors
B. R. Hawke, J. W. Head
  1142

Lunar Mare Domes: Classification and Modes of Origin
J. W. Head, A. Gifford
  1143

Sample 74001 and Its Significance for Models for Eruption Behavior of a Volcanic Vent in Eastern Mare Serenitatis
G. H. Heiken, D. S. McKay
  1144

Thermal History of Lunar Magma Ocean
F. Herbert, M. J. Drake, C. P. Sonett, M. J. Wiskerchen
  1145

Observational Evidence for Supernova-Induced Star Formation
W. Herbst, G. E. Assousa
  1146

A Moon-Like Planetesimal and Other Antiquities at North Ray Crater, Apollo 16
J. Hertogen, M. J. Janssens, H. Takahashi, H. Palme, E. Anders
  1147

Fractionation of Lunar Feldspathic Magmas
P. C. Hess, M. J. Rutherford, H. W. Campbell, P. A. Dick
  1148

Cooling History of Apollo 16 Phosphide-Metal Assemblage
R. H. Hewins, J. I. Goldstein
  1149

Solar Origin of 'Planetary' Neon?
D. Heymann
  1150

Inert Gas Stratigraphy of the Lower Half of the Apollo 16 Drill Core
D. Heymann, J. Ray, A. Walker, M. Diziczkaniec, R. Palme
  1151

Lead-Lead Age and Rare Earth Element Determinations in Lunar Norite 78235
J. R. Hinthorne, R. L. Conrad, S. E. Church
  1152

Synodic Effects on the Escape of Helium and Hydrogen from the Moon
R. R. Hodges Jr.
  1153

Basaltic Ring Structures of the Columbia Plateau and Possible Extraterrestrial Analogs
C. A. Hodges
  1154

Evidence for a Direct Genetic Connection Between Apollo 15 KREEP and Apollo 12 and 15 Basalts
L. S. Hollister, M. L. Crawford
  1155

Thermal Conductivity of Two Apollo 17 Drill Core Samples 70002 and 70006: A preliminary Result
K. Horai, J. L. Winkler Jr., S. J. Keihm, M. G. Langseth Jr., J. A. Fountain, E. A. West
  1156

Shallow Drilling in the "Bunte Breccia" Impact Deposits, Ries Crater, Germany
F. Hoerz, H. Gall, R. Huettner, V. R. Oberbeck
  1157

An ESCA Study of Reduced Fe and Other Surface Chemical Alteration Profiles in Lunar Fines
R. M. Housley, R. W. Grant
  1158

Agglutinate Formation: Lack of Chemical Fractionation
H.-N. Hu, L. A. Taylor
  1159

A Re-examination of the Orbital X-ray Data from Apollo 15 and 16
N. J. Hubbard
  1160

High Resolution Orbital X-ray Results for the Mare Fecunditatis-Langrenus Crater Region
N. J. Hubbard, C. G. Andre
  1161

Orbital Gamma Ray Data and Early Differentiation
N. J. Hubbard, D. Woloszyn
  1162

Effect of Temperature and Composition on Superparamagnetic Clusters of Fe2+ Spins in Olivines-A Potential Thermal History Indicator
F. E. Huggins, G. P. Huffman
  1163

Mars: Surface Mineralogy from Reflectance Spectra
R. L. Huguenin, J. B. Adams, T. B. McCord
  1164

40Ar-39Ar Measurements on Lunar Highlands Rocks with Primitive 87Sr/86Sr
J. C. Huneke, F. R. di Brozolo, G. J. Wasserburg
  1165

Comparison of the Chronology of the Kapoeta Parent Planet and the Moon
J. C. Huneke, S. P. Smith, R. S. Rajan, D. A. Papanastassiou, G. J. Wasserburg
  1166

Micro-Mineralogy of Calcium-Aluminium-Rich Inclusions from Allende
I. D. Hutcheon
  1167

Monte Carlo Simulation of the Jet Stream
W.-H. Ip
  1168

Chemical and Experimental Constraints on the Genesis of Apollo 15 and Apollo 17 KREEP Basalts
A. J. Irving
  1169

On the Intensity of Sodium Vaporization from the Mare Regolith
A. V. Ivanov
  1170

The Simple Hydrodynamic Model of Cratering
B. A. Ivanov, L. I. Comissarova
  1171

Petrology of Four Clasts from Consortium Breccia 73215
O. B. James
  1172

Consortium Breccia 73255: Matrix Petrography and Exposure History
O. B. James, K. Marti
  1173

Electron Damage: A New Analytic Technique Applied to Plagioclase in Shocked Chondrites and Basalt
R. Jeanloz
  1174

New 40Ar-39Ar Ages of Apollo 16 Breccias and 4.42 AE Old Anorthosites
E. K. Jessberger, B. Dominik, T. Kirsten, Th. Staudacher
  1175

Lunar Spectral Units: A Northern Hemispheric Mosaic
T. V. Johnson, J. A. Mosher, D. L. Matson
  1176

Further Insights Into the Evolution of the Early Moon: I. Convection Cells, II. Ru-Os Partitioning and Mixing
S. Jovanovic, K. J. Jensen, G. W. Reed Jr.
  1177

Preliminary Results on Isotopic Measurments on Trace Elements in Lunar Breccias
S. Jovanovic, G. W. Reed Jr.
  1178

The Presence, Transport and Origins of Volatiles in the Lunar Regolith
S. Jovanovic, G. W. Reed Jr.
  1179

Planetesimal Interactions in the Earth-Venus Zone
W. M. Kaula
  1180

Why is the Moon Different From the Earth in Bulk Composition?
W. M. Kaula
  1181

Lunar Thermal Regime to 500 KM
S. J. Keihm, M. G. Langseth
  1182

Apollo 11 Revisited: New Determinations of Radionuclide Contents of Apollo 11 Samples
J. E. Keith, L. J. Bennett
  1183

Solar Wind Nitrogen: Mechanisms for Isotopic Evolution
J. F. Kerridge, I. R. Kaplan, R. E. Lingenfelter, W. V. Boynton
  1184

Luna-16 and Luna-20 Exsolved Clinopyroxenes: Estimation of Subsolidus Cooling Rates
N. R. Khisina, E. S. Makarov
  1185

The Role of Volatiles in the Impact Process
S. W. Kieffer
  1186

Data Accuracy Considerations for Lunar Permeability Studies
J. H. King, N. F. Ness
  1187

The Chromium Concentration of Ilmenite and Its Possible Application as a Lunar Thermometer
B. Knecht, B. Simons, E. Woermann, A. El Goresy
  1188

53Mn in Lunar Cores: Evidence for the Time Scale of Surface Gardening
C. P. Kohl, G. P. Russ, J. R. Arnold, K. Nishiizumi, M. Imamura, M. Honda
  1189

Recent Lunar Cratering: Absolute Ages of Kepler, Aristarchus, TYCHO
B. Koenig, G. Neukum, H. Fechtig
  1190

Experimental Approach to the Condensation in a Solar Nebula
B. K. Kothari, J. P. Stephens
  1191

Distribution of Volatile and Non-Volatile Elements in Grain-Size Fractions of Apollo 17 Lunar Soils
U. Kraehenbuehl, A. Gruetter, H. R. V. Gunten, G. Meyer, F. Wegmuller, A. Wyttenbach
  1192

Lunar Gravity and Flexure of a Thin Elastic Lithosphere
A. F. Kuckes
  1193

On Possible Structure of the Martian Cryolithosphere
R. O. Kuzmin
  1194

The Influence of Solid State Convection Processes on Thermal History Models of the Moon
M. Lange, R. Meissner
  1195

Galactic Cosmic Rays Induced Isotopes, Meteoritic Gardening, and the Deposition History of Lunar Core Tubes
Y. Langevin, M. Maurette
  1196

Anomalous Acquisition of Thermoremanence at 130 C in Iron and Paleointensity of Meteorites
M. Lanoix, D. W. Strangway, G. W. Pearce, Y. M. Wu, L. Taylor
  1197

Primordial Noble Gases in Five LL Chondrites: Host Phases, Abundance Patterns, Origin
R. S. Lewis, H. Takahashi, L. Alaerts, E. Anders
  1198

Age Distribution of Lunar Surface Magnetic Fields
R. P. Lin, K. A. Anderson, R. Bush
  1199

Geochemical Studies of the White Breccia Boulders at North Ray Crater, Descartes Highlands
M. M. Lindstrom, D. F. Nava, S. R. Winzer, D. J. Lindstrom, R. K. L. Lum, P. J. Schuhmann, S. Schuhmann, J. A. Philpotts
  1200

The Effect of Chromium on Model Lunar Highland Compositions
B. R. Lipin
  1201

Dynamic Crystallization Experiments Bearing on the Origin of Textures in Impact Generated Liquids
G. E. Lofgren, T. M. Usselman
  1202

Magma Oceanography: 2. Chemical Evolution
J. Longhi
  1203

Mare Ridges, Topography, and Structure in Southern Imbrium and Northern Procellarum
B. K. Lucchitta
  1204

Evolution of the Lunar Interior: Sm-Nd Systematics of A15 Green Glass and the Question of the Lunar Initial 143Nd/144 Nd
G. W. Lugmair, K. Marti
  1205

Evidence for Spinel in the Primordial Bulk Moon
M.-S. Ma, A. V. Murali, R. A. Schmitt
  1206

Major, Minor and Trace Element Compositions of Two Petrologically Significant Lithologies in 12013
M.-S. Ma, A. V. Murali, R. A. Schmitt, J. E. Quick, A. L. Albee
  1207

Noble Gases and Particle Tracks in Olivine Crystals from Murchison and Cold Bokkeveld
D. MacDougall, D. Phinney
  1208

Is the Moon a Captured Body?
R. J. Malcuit, R. R. Winters, M. E. Mickelson
  1209

Early Evolution of Planetary Surfaces
M. C. Malin
  1210

Impact Microcraters on 12054 Rock
J. C. Mandeville
  1211

Optical Properties of Lunar and Terrestrial Rock Samples Submitted to Micrometeoroid Bombardment
J. C. Mandeville, A. Dollfus
  1212

Sm-Nd-Pu Systematics in the Early Solar System
K. Marti, G. W. Lugmair, N. B. Scheinin
  1213

Impactites and Breccias of the Astroblemes of the USSR
V. L. Masaitis
  1214

Soil Maturity and Planetrary Regoliths: The Moon, Mercury and Asteroids
D. L. Matson, T. V. Johnson, G. J. Veeder
  1215

Retention of Eleven Trace Elements in Murchison C2 Chondrite Heated from 400-1000 C
S. D. Matza, M. E. Lipschutz
  1216

Mare Stratigraphy of Southeastern Serenitatis
T. A. Maxwell, F. El-Baz
  1217

Analysis of Low Altitude X-ray Flurescence Data from Mare Crisium and Mare Smythii
T. A. Maxwell, P. L. Strain, F. El-Baz
  1218

Partitioning of Zr Between Crystals and Coexisting High-Ti Mare Basalt Melt
I. S. McCallum, M. P. Charette
  1219

Magnetic Modeling of the Rima Sirsalis Lunar Magnetic Anomaly
J. E. McCoy, R. P. Lin, K. A. Anderson
  1220

Accretionary Particles: Production and Equilibrium on 12054
J. A. M. McDonnell
  1221

Maturity of Soil in Drive Tube 60009/10 and Implications for Regolith Evolution
D. S. McKay, R. V. Morris, M. A. Dungan, D. D. Bogard, R. M. Fruland
  1222

KREEP
G. A. McKay, D. F. Weill
  1223

The Bulk Composition of Refractory Inclusions in Carbonaceous Chondrites
H. Y. McSween Jr.
  1224

Comparative Calculations of Temperatures and Viscosities in Terrestrial Planets
R. Meissner, M. Lange
  1225

The Role of Slumping in Crater Modification
H. J. Melosh
  1226

Ion Microprobe Study of Glass Particles from Lunar Sample 15101
C. Meyer Jr., E. Schonfeld
  1227

The Apollo 16 Deep Drill Core
H. O. A. Meyer, R. H. McCallister
  1228

Opaque Oxides in Lunar Igneous Rocks: Compositional Changes by Thermal Metamorphism
K. C. Misra, L. A. Taylor
  1229

Movements of Materials on the Surface of an Achondrite Parent Body as Inferred from Its Crust Model and the Yamato Achondrites
M. Miyamoto, K. Yanai, H. Takeda
  1230

The Effect of Outgassing Upon the Closure of Cracks and the Strength of Lunar Analogues
H. Mizutani, H. Spetzler, I. Getting, R. J. Martin III, N. Soga
  1231

A "Chondritic" Eucrite Parent Body: Inference from Trace Elements
J. W. Morgan, H. Higuchi, H. Takahashi, J. Hertogen
  1232

The Age of Shorty Crater
M. Moergeli, P. Eberhardt, O. Eugster, J. Geisse, N. Groegler, M. Jungck
  1233

Fine-Grained Metal Distribution in Grain-Size Separates of Lunar Soils: Production and Evolution of the Fine-Grained Metal
R. V. Morris
  1234

Surface and Near-Surface Exposure Ages of Lunar Soils: Exposure Ages Based on the Fine-Grained Metal and Cosmogenic 21Ne
R. V. Morris
  1235

Ferromagnetic Resonance and Magnetic Studies of the Apollo 16 Deep Drill Core: Surface Exposure and Compositional Stratigraphy
R. V. Morris, W. A. Gose
  1236

Microcraters and Solar Cosmic Ray Tracks
D. Morrison, E. Zinner
  1237

Comparison of Structural Style Between Northern Mare Tranquillitatis and Southern Mare Serenitatis
W. R. Muehlberger
  1238

Laser Probe 40Ar-39Ar Dating of Materials from Consortium Breccia 73215
H. W. Mueller, T. Plieninger, O. B. James, O. A. Schaeffer
  1239

Chemical Composition of Breccias, Feldspathic Basalt and Anorthosites from Apollo 15 (15308, 15359, 15382 and 15362), Apollo 16 (60618 and 65785), Apollo 17 (72435, 72536, 72559, 72735, 72738, 78526 and 78527), and Luna 20 (22012 and 22013)
A. V. Murali, M.-S. Ma, J. C. Laul, R. A. Schmitt
  1240

Chemistry of 30 Apollo 17 Rake Basalts; 71597 A Product of Partial Olivine Accumulation
A. V. Murali, M.-S. Ma, R. A. Schmitt, R. D. Warner, K. Keil, G. J. Taylor
  1241

Rb-Sr Isotopic Systematics and Initial SR Considerations for Some Lunar Samples
V. R. Murthy, M. R. Coscio Jr.
  1242

Possible Sources of Immature Soil at the Apollo 16 ALSEP Site
J. S. Nagle
  1243

Evolution History of Lunar Mare Basalts: Apollo 15 Samples Revisited
N. Nakamura, D. M. Unruh, R. Gensho, M. Tatsumoto
  1244

Seismic Indications of Broad-Scale Lateral Inhomogenieties in the Lunar Interior
Y. Nakamura, G. V. Latham, H. J. Dorman, P. Horvath, A. K. Ibrahim
  1245

Lunar Highland Melt Rocks: Major Element Chemistry and Comparisons with Lunar Highland Glass Groups
M. T. Naney, J. J. Papike, D. T. Vaniman
  1246

Rind Glass and Breccia: A Study of Lunar Sample 15255
D. F. Nava, S. R. Winzer, D. J. Lindstrom, M. Meyerhoff, R. K. L. Lum, P. J. Schuhmann, M. M. Lindstrom, J. A. Philpotts
  1247

Different Ages of Lunar Light Plains
G. Neukum
  1248

Pyroxene-Melt Equilibria and a Possible Pyroxene Geothermometer for Low-Alkali Basaltic Rocks: Preliminary Results
R. L. Nielsen, M. J. Drake
  1249

Exposure Histories of Lunar Rocks 71135 and 71569
S. Niemeyer
  1250

Structure, Composition and Significance of "G-P" Zones in 76535 Orthopyroxene
G. L. Nord Jr., J. S. Huebner, M. Ross
  1251

Sr-Isotopic Constraints on the Petrogenesis of Apollo 12 Ilmenite Basalts
L. E. Nyquist, B. M. Bansal, J. L. Wooden, H. Wiesman
  1252

REE and Rb-Sr Analysis of 15405 Quartz-Monzodiorite (Super-KREEP)
L. E. Nyquist, H. Wiesmann, C.-Y. Shih, B. M. Bansal
  1253

Partitioning of Energy and the Degree of Melting and Vaporization in Planetary Impact Processes
J. D. O'Keefe, T. J. Ahrens
  1254

Topography of Lunar Secondary Craters and Implications
V. R. Oberbeck, H. R. Aggarwal
  1255

Trace Element Fractionation During Crystallization of Lunar Rock 75035
H. Palme, F. Wlotzka
  1256

An Isotopic Triptych on Mare Basalts: Rb-Sr, Sm-Nd, U-Pb
D. A. Papanastassiou, D. J. Depaolo, F. Tera, G. J. Wasserburg
  1257

The Apollo 17 Drill Core: Modal Data (Sections 70007, 70008, 70009)
J. J. Papike, S. F. Lellis, R. Becker, D. T. Vaniman
  1258

Thorium Concentrations in the Lunar Surface
R. E. Parker, E. L. Haines, A. E. Metzger
  1259

Chemical Compositions and Magnetic Properties in Separated Glass and Breccia Fractions of 70019
G. W. Pearce, C. L. Chou, Y. Wu
  1260

Cooling Histories of Stony Meteorites
P. Pellas, D. Storzer
  1261

Thermal Inertia of the Elysium Region of Mars
A. R. Peterfreund, H. H. Kieffer, F. D. Palluconi
  1262

Matrix Glass vs. Intruded Glass in Lunar Sample 15286
C. H. Pettyjohn, L. C. Klein, D. R. Uhlmann
  1263

Petrologic Evidence for Formation and Solidification of Impact Melts
W. C. Phinney, J. L. Warner, C. H. Simonds
  1264

Geology and Geochemistry of the Flamsteed Region of Oceanus Procellarum: A Preliminary Report Based on Remote Sensing and Lunar Sample Information
C. Pieters, J. B. Adams, R. Bryan, J. W. Head, T. B. McCord, S. Zisk
  1265

Carbon Systematics of Lunar Soils: 1. Studies on Agglutinates Separated from 15601
C. T. Pillinger, L. R. Gardiner, A. J. T. Jull, M. R. Woodcock, A. Stephenson
  1266

Thermoluminescence and Lunar Heat Flow
A. L. Plachy, R. M. Walker, D. W. Zimmerman
  1267

244Pu Geochemistry and Geochronology
F. A. Podosek, J. R. Shirck, G. J. Taylor
  1268

Pattern Recognition: A Valuable Tool in Lunar Data Interpretation and Its Application to Apollo 16 Chemical Data
D. D. Pratt, C. B. Moore, M. L. Parsons
  1269

Pattern Recognition Studies on Apollos 11, 15, 16, and 17 Data
D. D. Pratt, C. B. Moore, M. L. Parsons, D. Anderson
  1270

Pattern Recognition Techniques Applied to Chemical Classifications of Apollo 17 Mare Basalts
D. D. Pratt, C. B. Moore, M. L. Parsons
  1271

The Moon's Post-Accretional Temperature Distribution
G. A. Ransford
  1272

Wind-Transport of Ejecta and the Fragmentation Parameter
D. E. Rehfuss, D. Michael, J. C. Anselmo, N. K. Kincheloe
  1273

Non-Mare "Igneous" Clasts in Apollo 15 Breccias
A. M. Reid, S. H. Richardson, A. R. Duncan
  1274

Chemistry, Classification and Petrogenesis of Apollo 12 Mare Basalts
J. M. Rhodes, D. P. Blanchard, J. C. Brannon, K. V. Rodgers, M. A. Dungan
  1275

Siderophile and Volatile Elements in the Moon and the Earth's Mantle: Implications for Lunar Origin
A. E. Ringwood, S. E. Kesson
  1276

Cratering Subsurface Motion Sequences and Structural Deformation: Experimental Techniques
D. J. Roddy, G. W. Ullrich
  1277

Differentiation Trends in Mare Lavas, as Indicated by Silicate Melt Inclusions
E. Roedder, P. W. Weiblen
  1278

Equipotential Doming in Flooded Circular Basins
L. E. Roth, C. Elachi, R. J. Phillips
  1279

Concerning the Early Melting of the Moon
S. K. Runcorn
  1280

On the Formation of Satellites Near Giant Planets
E. L. Ruskol, V. S. Safronov
  1281

Search for CA Isotopic Fractionation and Correlation of CA and O Effects
W. A. Russell, D. A. Papanastassiou, T. A. Tombrello, S. Epstein
  1282

Serenitatis and Imbrium Impact Melts: Implications for Lunar Crustal Composition and Stratigraphy
G. Ryder, J. A. Wood
  1283

Characteristics of Lunar Maria: Earth-Based Data
R. S. Saunders, T. W. Thompson, J. A. Mosher
  1284

Primary Chemical Composition in the Highland Crust
S. R. Taylor, A. E. Bence
  1285

Shock Effects in Some Lunar Basalts
R. B. Schaal, F. Hoerz
  1286

The Cratered Surfaces of Mars, Venus, Mercury and the Moon: Evidence of Similar Average Crustal Viscosities Over the Past 4+ Aeons
G. G. Schaber, J. M. Boyce
  1287

Laser 39Ar-40Ar Study of Apollo 17 Basalts
O. A. Schaeffer, H. W. Mueller, T. L. Grove
  1288

Laser 39Ar-40Ar Ages of Lunar Rocks
O. A. Schaeffer, G. A. Schaeffer
  1289

Martian Volcanism
E. Schonfeld
  1290

Comparative Study of Orbital and Lunar Sample Geochemistry
E. Schonfeld
  1291

Ti(IV) Ti(III), Eu(III)-Eu(II), and Cr(III)-Cr(II) Redox Equilibria in Synthetic Silicate Melt Analogs of Lunar Basaltic Magmas
H. D. Schreiber
  1292

Agglutinates: Noble Gas and Element Distribution in Grain Size Fractions of the Apollo 15 Soil 15601
L. Schultz, H. W. Weber, B. Spettel, H. Hintenberger, H. Waenke
  1293

Ejecta Interactions from major Lunar Impacts
P. H. Schultz
  1294

Interpreting Statistics of Small Lunar Craters
P. H. Schultz, R. Greeley, D. E. Gault
  1295

Electron Petrography of Shock-Induced Crystallographically Controlled Planar Features in Quartz
C. B. Sclar, J. F. Bauer
  1296

Lunar Farside Tectonics and Volcanism
D. H. Scott, J. M. Diaz, J. A. Watkins
  1297

Mare Basalts in Sinus Aestum and Sinus Medii
J. B. Sharp, N. Gilbert, R. A. de Hon
  1298

Light Noble Gas Records of Lunar Soil Evolution
P. Signer, H. Baur, U. Derksen, P. Etique, H. Funk, P. Horn, R. Wieler
  1299

Microcracks in Shocked Rock
G. Simmons, R. W. Siergried, D. Richter, F. Hoerz
  1300

Effect of Water on Cratering: A Review of Craters and Impactities on the Earth, Moon and Mars
C. H. Simonds, W. C. Phinney, J. L. Warner
  1301

ALSEP-Quasar VLBI Observations
M. A. Slade, R. A. Preston, A. W. Harris, L. J. Skjerve, D. J. Spitzmesser
  1302

Tidal Stress Concentrations in a Laterally Heterogeneous Moon
J. C. Smith, W. B. Banerdt, C. G. Sammis, S. S. Alexander
  1303

Chemical Evidence on Origin of Earth and Moon
J. V. Smith
  1304

Magma Oceanography: 1. Thermal Evolution
S. C. Solomon, J. Longhi
  1305

Surficial Geologic Mapping of Mars
P. Spudis, R. Greeley
  1306

Geology of the Imbrium Basin Apennine Mountains and the Origin of Pre-Imbrian Topography
P. Spudis, J. W. Head
  1307

Spontaneous Magnetic Field Generation in Hypervelocity Impacts
L. J. Srnka
  1308

40Ar-39Ar Age Systematics of Consortium Breccia 73215. II
Th. Staudacher, E. K. Jessberger, T. Kirsten
  1309

Apollo 15 Breccia Rake Samples-Description and Mineralogy of Lithic Clasts and Exsolved Pyroxene Grains
I. M. Steele, J. V. Smith
  1310

A Preliminary Palaeointensity Result for Sample 10017
A. Stephenson, S. K. Runcorn, D. W. Collinson
  1311

Compressional and Shear Wave Velocities in Fine-Grained Powders Under Vacuum and Low Loads
R. M. Stesky, B. Renton
  1312

Structure of the Ries Crater and Distribution of Target Rocks Within Different Types of Impact Breccias
D. Stoeffler
  1313

Provenance of the Clast Population of Some Fra Mauro Breccias
D. Stoeffler, H. D. Knoell
  1314

Origin and Relative Age of Lunar and Mercurian Inter-Crater Plains
R. G. Strom
  1315

A Chemical Study of Apollo 15 Glass-Coated Rock 15465 and Green Glass from Soil 15301
W. B. Stroube Jr., M. Z. Ali, W. D. Ehmann
  1316

Temperature Dependencies of Crystal Field Transition Energies and Their Effect on the Mineralogical Mapping of the Lunar Surface
C. M. Sung, R. B. Singer, K. M. Parkin, B. M. Leoffler, R. G. Burns
  1317

Inverted Pigeonites from Lunar Breccia 76255 and Pyroxene-Crystallization Trends in Lunar and Achondritic Crusts
H. Takeda, M. Myamoto
  1318

Petrology of Apollo 17 Deep Drill Core-I. Depositional History Based on Modal Analyses of 70009, 70008 and 70007
G. J. Taylor, K. Keil, R. D. Warner
  1319

Fe-Mg Diffusion in Olivine: A Cooling Rate Indicator
L. A. Taylor, B. M. Walker, P. I. K. Onorato, D. R. Uhlmann
  1320

Geochemical Evolution of the Moon: Taylor-Jake-Bence Models Revisited
S. R. Taylor, P. Jakes
  1321

Quality Factor Q Under Confining Pressure
B. R. Tittmann, L. Ahlberg, H. Nadler
  1322

Thermal Evolution of Planetary Size Bodies
M. N. Toksoez, A. T. Husi
  1323

Implications of the Occurrence of Fe3+ and FeO in Lunar Samples
F. D. Tsay, A. J. Bauman
  1324

Numerical Calculations of the Cross Section for the Accretional Capture of the Moon by the Earth
D. L. Turcotte, J. C. Nordmann
  1325

Evidence for a Limited Duration to the Volcanism at Hadley Rille
G. Turner
  1326

Crystallization Kinetics, Viscous Flow and Thermal History of Lunar Breccia 67975
D. R. Uhlmann, L. C. Kelin, J. C. H. Petty
  1327

The Apollo 17 Drill Core: Chemistry and Stratigraphy of Monomineralic Fragments and the Discovery of a New Very Low TI (VLT) Mare Basalt
D. T. Vaniman, J. J. Papike
  1328

The Apollo 17 Drill Core: Glass Chemistry and Intracore Distributions (Sections 70007, 70008, and 70009)
D. T. Vaniman, J. J. Papike
  1329

An Estimate of the Lunar Frontside Moho Depth from Gravimetric and Topographic Data
J. Voss
  1330

Crystallization Histories Based on Pyroxene Interface Morphologies
B. M. Walker, L. A. Taylor
  1331

Slowly Cooled Microgabbros 15065 and 15555
D. Walker, J. Longhi, E. M. Stolper, T. L. Grove, J. F. Hays
  1332

Depth-Integrated Production Rates of He, Ne and Ar Produced by Solar Cosmic Ray Protons in Lunar Material and Elements
J. R. Walton, D. Heymann, A. Yaniv
  1333

Case Studies Concerning the Role of Solar Cosmic Ray Proton Production of Inert Gases in Lunar Samples
J. R. Walton, D. Heymann, A. Yaniv
  1334

Primary Matter in the Lunar Highlands: A Reevaluation
H. Waenke, K. Blum, G. Dreibus, H. Hofmeister, H. Kruse, B. Spettel
  1335

Marker Events in the Early Evolution of the Solar System: Evidence from Rims on Calcium-Aluminium-Rich Inclusions in Carbonaceous Chondrites
D. A. Wark, J. F. Lovering
  1336

Feldspathic, Granulitic Impactites that Pre-Date the Final Lunar Bombardment
J. L. Warner, C. E. Bickel, W. C. Phinney, C. H. Simonds
  1337

Petrology and Crystallization History of Apollo 14 Impactites
J. L. Warner, C. H. Simonds, W. C. Phinney, J. H. Geeslin, C. E. Bickel
  1338

Petrology of Breccias from Apollo 17 Rake Samples
R. D. Warner, G. J. Taylor, K. Keil
  1339

In Quest of Primary Highlands Rocks
P. H. Warren, D. W. Mittlefehldt, W. V. Boynton, J. T. Wasson
  1340

MG and CA Isotopic Study of Individual Microscopic Crystals from the Allende Meteorite by the Direct Loading Technique
G. J. Wasserburg, T. Lee, D. A. Papanastassiou
  1341

Classification and Elemental Fractionation Among Carbonaceous Chondrite Classes
J. T. Wasson, W. V. Boynton, G. W. Kallemeyn
  1342

Relative Ages of Lunar Upland Plains Based on Crater Size-Frequency Distributions
J. A. Watkins, J. M. Boyce, J. M. Diaz
  1343

Structural Chemistry of Armalcolite and Ilmenite at High Temperatures
B. A. Wechsler, C. T. Prewitt
  1344

The Cratered-Shell Model of the Lunar Permanent Magnetic Field: Multipolar Analysis
H. Weiss, L. Hood, P. J. Colemam Jr.
  1345

Evolution of the Earth's Planetesimal Swarm Subsequent to the Formation of the Earth and Moon
G. W. Wetherill
  1346

The Procellarum Volcanic Complexes: Contrasting Styles of Volcanism
J. L. Whitford-Stark, J. W. Head
  1347

Oceanus Procellarum: Volcanic and Tectonic Evolution
J. L. Whitford-Stark, J. W. Head
  1348

Nuclear Particle Track Studies of the Pasamonte Eucrite
L. L. Wilkening, S. R. Parker
  1349

Petrography and Petrology of Clasts from Consortium Breccia 61175
S. R. Winzer, M. Meyerhoff
  1350

A Lunar Metal Core?
M. J. Wiskerchen, C. P. Sonett
  1351

Degradation Trends of Mercurian Craters and Correlation with the Moon
C. A. Wood, J. W. Head, M. J. Cintala
  1352

The Apollo 15 Green Clouds and the Green Glass Enigma
J. A. Wood, G. Ryder
  1353

BI Microdistributions in Chondrites
D. S. Woolum, L. Bies-Horn, D. S. Burnett, L. S. August
  1354

A Simulation of the Lunar Highlands Crater Population
A. Woronow
  1355

On Possible Effects of Selective Evaporization of Impact Melts Produced in Lunar Craters
O. I. Yakovlev, O. V. Parfenova
  1356

The Lunar Impact Flux, Radiometric Age Correlation, and Dating of Specific Lunar Features
R. A. Young
  1357

Polarimetry of Meteorites and the Asteroid Albedo Scale
B. Zellner, M. Leake, T. Lebertre, A. Dollfus
  1358

Surface Enhanced Elements and Microcraters in Lunar Rock 76215
E. Zinner, R. M. Walker, J. Chaumont, J. C. Dran
  1359

Mass Fractionation by Solar Wind Sputtering
Z. E. Zwitkowski, P. K. Haff, T. A. Tombrello, D. S. Burnett
  1360