Lunar and Planetary Institute






Ninth Lunar and Planetary Science Conference

TABLE OF CONTENTS

no.

Plagioclase Feldspars: Visible and Near Infrared Diffuse Reflectance Spectra as Applied to Remote Sensing
J. B. Adams, L. H. Goullaud
  1001

Thermal Structure of Impact Ejecta Blankets
T. J. Ahrens, J. D. O'Keefe
  1002

40AR-39AR Studies of Glasses from Lunar Soils
E. C. Alexander, M. R. Coscio, J. C. Dragon, K. Saito
  1003

From Dark Clouds to Planets and Satellites
H. Alfven
  1004

Viking Martian Seismology: a Summary of Current Status
D. L. Anderson, S. Cook, A. M. Dainty, F. K. Duennebier, N. R. Goins, R. L. Kovach, G. V. Latham
  1005

Fourth Order Equilibrium Figure for the Atmospheres of Jupiter and Saturn
J. D. Anderson
  1006

Distribution of Lunar Surface Magnetic Fields
K. A. Anderson
  1007

Orbital XRF Observations of the Lunar Subsurface Through Impact Craters
C. G. Andre, I. Adler, R. W. Wolfe
  1008

Cratering Equations: an Overview
J. C. Anselmo, D. E. Rehfuss, N. K. Kincheloe
  1009

Gamma Ray Maps of Lunar Titanium and Iron
J. R. Arnold, P. A. Davis, R. C. Reedy
  1010

Mid Infrared Spectra of Lunar and Analog Soils
J. R. Aronson, E. M. Smith
  1011

Kinetic Isotope Fractionation and the Composition of Meteorites
G. Arrhenius, R. W. Fitzgerald, S. Markus
  1012

Viking Lander Imaging during the Extended Mission
R. E. Arvidson, E. A. Guinness, C. E. Carlston, D. Pidek, K. L. Jones, C. Sagan, S. D. Wall
  1013

Morphological Mapping of Martian Outflow Channels
V. R. Baker, R. C. Kochel
  1014

A Preliminary Assessment of the Dynamic Erosional Processes that Shaped the Martian Outflow Channels
V. R. Baker
  1015

Petrology of Apollo 12 Olivine-Pigeonite Mare Basalts 12007, 12015, 12043 and 12072
W. S. Baldridge, A. L. Albee, A. A. Chodos
  1016

Mobile Trace Element Contents of Allende (C3V) Chondrite Heated at 400-1400 Degrees C
G. Bart, M. Ikramuddin, M. E. Lipschutz
  1017

Grain Size Distribution and Relative Length of Fragments in Allogene Breccias of the Meteoritic Craters Janisjarvi, Karelia, and Kara, the Polar Ural
A. T. Basilevsky, L. B. Granovsky, B. A. Ivanov
  1018

Impact Melt Origin of Luna 24 Olivine Vitrophyres
A. Basu, D. S. McKay, R. M. Fruland
  1019

Sm-Nd Systematics in Some Mantle-Derived Minerals and Their Implication for Basalt Evolution
A. R. Basu, M. Tatsumoto
  1020

Shock-Induced Deformation in Olivine from Polycrystalline Dunites and Particulate Samples
J. F. Bauer
  1021

Comparative Petrology of the Apollo 11 High-K Basalts
D. W. Beaty, A. L. Albee
  1022

A Textural Modal and Chemical Classification of the Apollo 11 Low-K Basalts
D. W. Beaty, A. L. Albee
  1023

Nitrogen Isotopes in Some Exceptional Apollo 12 and Apollo 17 Soils
R. H. Becker, R. N. Clayton
  1024

Experimental Investigations on the Spinel Cataclasites
A. E. Bence, T. L. Grove, D. H. Lindsley
  1025

Solar System Actinide Abundances: I. Laboratory Partitioning Between
T. Benjamin, R. Heuser, D. S. Burnett
  1026

Ureilites: Origin as Related Magmatic Cumulates
J. L. Berkley, G. J. Taylor, K. Keil
  1027

Excess Fission Xenon in Apollo 16 Samples
T. J. Bernatowicz, C. M. Hohenberg, B. Hudson, B. M. Kennedy, F. A. Podosek
  1028

Hvem and Hves Observations of U-2 Stratospheric Dust Grains
J. P. Bibring, D. E. Brownlee, M. Maurette
  1029

Textural-Mineralogical Relationships in a Population of ANT Samples
C. E. Bickel, J. L. Warner
  1030

Classification of the Lunar Surface Using Remote Sensing Data
M. J. Bielefeld, W. C. Shoup, L. G. Evans, J. I. Trombka
  1031

Topographic Variance Spectra of the Moon, Mars, Venus and Earth: an Equilibriu Model
B. G. Bills
  1032

The Mare Basalt Magma Source Region
A. B. Binder, M. A. Lange
  1033

Mare Basalt Units and the Composition of Their Magmas
A. B. Binder, M. A. Lange, B. Nehl
  1034

The Moon's Internal Structure and its Compositional and Seismic Implications
A. B. Binder, J. Voss
  1035

Compositional Variations among Size Fractions in a Homogeneous, Unmatured Regolith: Drive Tube 74001/2
D. P. Blanchard, J. R. Budahn
  1036

Consortium Breccia 73255: Rare-Earth Light Element, and Rb-Sr Chemistry of Aphanitic Lithologies
D. P. Blanchard, J. R. Budahn, J. F. Kerridge, W. Compston
  1037

Irradiation Stratigraphy in Apollo 16 Cores
G. E. Blanford, G. C. Wood
  1038

Large Scale Erosive Flows Associated with Chryse Planitia, Mars: Source and Sink Relationships
K. R. Blasius, J. A. Cutts, W. J. Roberts
  1039

Noble Gas Contents and Irradiation History of Orange-Black Glass in the 74001-74002 Core
D. D. Bogard, W. C. Hirsch
  1040

Relative Abundances of Fine-Grained Metal and Noble Gases in Magnetic Separates of Crushed Agglutinate Particles
D. D. Bogard, R. V. Morris, D. S. McKay, R. Fuhrman, W. C. Hirsch
  1041

Ages of Flow Units in the Eastern Maria and Mare Humorum Based on Crater Density
J. M. Boyce, D. A. Johnson
  1042

Rare-Earth Elements as Indicators of Supernova Condensation
W. V. Boynton
  1043

Petrology of Apollo 16 Breccia 66075
B. S. Brock, A. L. Albee
  1044

Chondritic Meteor Debris in Abyssal Sediments
D. E. Brownlee, P. W. Hodge, M. B. Blanchard, T. E. Bunch, F. T. Kyte
  1045

A Two-Dimensional Computer Simulation of Hypervelocity Impact Cratering: Some Preliminary Results for Meteor Crater, Arizona
J. B. Bryan, D. E. Burton, M. E. Cunningham, L. A. Lettis
  1046

The Energy Spectrum of the VVH Cosmic Rays Averaged Over the Last 19 MYR.
R. K. Bull, P. F. Green, S. A. Durrani
  1047

Carbonaceous Chondrite (cm) Phyllosilicates: Condensation or Alteration Origin?
T. E. Bunch, S. Chang
  1048

Tidal Heating of the Moon: a Reappraisal
J. A. Burns, P. H. Schultz
  1049

Dielectric Measurements of Lunar Soil
H. E. Bussey
  1050

Recognition of Lunar Glass Droplets Produced Directly from Endogenous Melts: the Evidence from S-Zn Coatings
P. Butler
  1051

The Triggering Supernova and Isotopic Anomalies in Meteorites
A. G. W. Cameron, J. J. Cowan, J. W. Truran
  1052

Ilmenite Crystallization in Non-Mare Basalts
H. W. Campbell, P. C. Hess, M. J. Rutherford
  1053

The Role of Diffusion and Heterogeneous Target Characteristics in the Sputter Mechanism; Monte Carlo Simulations and Laboratory HE+ Ion Sputter Measurements
W. C. Carey, J. A. M. McDonnell
  1054

Planetary Cratering: Statistical Definition of an Equilibrium Surface
R. Casacchia, M. Fulchignoni, M. Poscolieri
  1055

Carbon Chemistry of Separated Phases of Murchison and Allende Meteorites
S. Chang, R. Mack, K. Lennon
  1056

Lead Isotope Systematics of Mare Basalt 75075
J. H. Chen, J. M. Mattinson, G. R. Tilton, P. Vidal
  1057

Fractionation of Siderophile Element Ratios in the Earth's Upper Mantle and Lunar Samples
C.-L. Chou
  1058

Characteristics of the Cratering Process on Small Bodies: PHOBOS and Deimos
M. J. Cintala, J. W. Head, J. Veverka
  1059

Flameless Atomic Absorption Studies of Volatile Trace Metals in Apollo 17 Samples
E. H. Cirlin, R. M. Housley
  1060

Unusual Surface Features on Volcanic Droplets from 74001 and 74002
U. S. Clanton, D. S. McKay, G. Waits, R. Fuhrman
  1061

Martian Surface Materials: Sample Chemical Differences and the Trace Element Problem
B. C. Clark, A. K. Baird, P. Toulmin, H. J. Rose, K. Keil
  1062

Lunar X-Ray Fluorescence Al/si and Mg/si Geochemical Maps with Corrections for Variations in Solar Activity
P. E. Clark, I. Adler
  1063

Color Correlation of X-Ray Fluorescence Al/si Intensities with Other Lunar Data
P. E. Clark, E. Eliason, C. Andre, I. Adler
  1064

Nucleosynthetic Origin of 41K Excess in Soil Agglutinates
D. D. Clayton
  1065

Isotopic Fractionation of Silicon in Allende Inclusions
R. N. Clayton, T. K. Mayeda, S. Epstein
  1066

How Dusty are Lunar Rocks? Evidence from Track Profiles
G. M. Comstock
  1067

Model Derivation of Lunar Soil Track Parameters
G. M. Comstock
  1068

Hydordynamics of Grains in the Solar Nebula
A. Coradini, G. Magni, C. Federico
  1069

Rosiwal Principle and Exposure of Lunar Soil Grains
D. R. Criswell, A. Basu
  1070

Lunar Crustal Structure as Indicated by Ejected Crater Volumes
S. K. Croft
  1071

History of Regolith Deposition at the Apollo 17 and Luna 24 Landing Sites and at Shorty Crater
G. Crozaz
  1072

Chaotic Terrain and Channels Associated with Chryse Planitia, Mars, an Alternative Erosional Model
J. A. Cutts, K. R. Blasius, W. J. Roberts
  1073

Martian Channels Formed by Lava Erosion
J. A. Cutts, W. J. Roberts, K. R. Blasius
  1074

Physical Model of the Evolution of Meteoritic Craters
A. I. Dabizha, V. M. Gordin, M. S. Krass, V. O. Mikhailov, V. P. Myasnikov
  1075

Convection with Decaying Heat Sources: a Simple Thermal Evolution Model
S. F. Daly, F. M. Richter
  1076

A New Method for Investigating the Past Activity of Ancient Solar Flare Cosmic Rays. Part i: the Privileged Role of 1 Mm-Igneous Coarse Fines in the Luna Regolith
E. Dartyge, J. P. Duraud, Y. Langevin, M. Maurette
  1077

A New Method for Investigating the Past Activity of Ancient Solar Flare Cosmic Rays. Part II: a Thermal Annealing Method for Exploiting High Densities of Tracks in Lunar Minerals
E. Dartyge, J. P. Duraud, Y. Langevin, M. Maurette
  1078

A Hibonite-Rich Inclusion from Allende: Mineralogy, Texture and Trace Element Chemistry
A. M. Davis, J. M. Allen, I. D. Hutcheon, L. Grossman
  1079

Dispersive Effects of Gravitational Encounters
D. R. Davis
  1080

Grain Temperature in Protoplanetary Dust Clouds
B. R. De, G. Arrhenius
  1081

Maximum Thickness of Materials in the Western Mare Basins
R. A. Dehon
  1082

Stratigraphy and Crater Morphology
R. A. Dehon
  1083

Asteroid Surface Variegation
J. Degewij, B. H. Zellner
  1084

Indigenous Siderophile Element Component of the Lunar Highlands and its Significance
J. W. Delano, A. E. Ringwood
  1085

Geochemistry of Some Volatile Siderophile and Lithophile Elements in the Lunar Highlands
J. W. Delano, A. E. Ringwood
  1086

Ages, Evolution and Neutron Effects of Luna 24 Samples
D. J. Depaolo, M. T. McCulloch, D. A. Papanastassiou, J. C. Huneke, G. J. Wasserburg
  1087

Carbon Isotopes, Nitrogen and Sulfur in Lunar Rocks
D. J. Desmarais
  1088

Reduced Forms of Elements in the Surface Parts of Regolith Particles: ESCA Studies
Y. P. Dikov, O. A. Bogatikov, V. L. Barsukov, K. P. Florenskii, A. V. Ivanov, V. V. Nemoshkalenko, V. G. Alyoshin
  1089

Petrologic History of Apollo 16 Breccia 68815
J. R. Dixon, J. J. Papike
  1090

The Magnetosphere of Venus
S. S. Dolginov, L. N. Zhuzgov, V. A. Sharova, V. B. Buzin, Y. G. Yeroshenko
  1091

The Unsymmetrical Bombardment of Callisto
A. Dollfus, J. C. Mandeville, J. E. Geake
  1092

The Meteoroid Population Viewed from the Lunar Seismograph Network
J. Dorman, Y. Nakamura, G. V. Latham
  1093

Experimental Investigations of Trace Element Fractionation in Iron Meteorites. I. Preliminary Results for CR
M. J. Drake, R. W. Bild, C. J. Hostetler
  1094

Element Correlations and Their Significance for the Determination of the Bulk Composition of Planetary Objects
G. Dreibus, K. Blum, H. Spettel, H. Wanke
  1095

Lunar Bouguer Gravity Anomalies: Imbrian Age Craters
J. Dvorak, R. J. Phillips
  1096

Crustal Magnetic Scale Sizes Measured at Apollo Landing Sites
P. Dyal, W. D. Daily
  1097

Core 70004; Chemical Stratigraphy
W. D. Ehmann, Z. Ali-Rumana, T. I. M. Hossain
  1098

Laser-Probe 39AR-40AR Dating of Two Clasts from Consortium Breccia 73215
G. Eichhorn, O. B. James, O. A. Schaeffer, H. W. Muller
  1099

The Allende Meteorite: Fremdlinge and Their Noble Relatives
A. El Goresy, K. Nagel, P. Ramdohr
  1100

Some Comparisons of Eolian Features on Earth and Mars
F. El-Baz
  1101

Textural Characterization of Impact Melt Rocks
W. V. Engelhardt
  1102

Classification of Lunar Igneous Rocks; a Statistical Evaluation of Chemical Data
W. V. Engelhardt, R. Stengelin
  1103

Structural Implications of Lunar Crater Elongation
D. T. Eppler, D. Nummedal, R. Ehrlich
  1104

Light Noble Gases in Agglutinates: a Record of Their Evolution?
P. Etique, H. Baur, U. Derksen, H. Funk, P. Horn, P. Signer, R. Wieler
  1105

Solar-Wind Gas and Solar-Flare Track Correlations in Lunar Soils; Revisited
P. Etique, H. Funk, G. Poupeau, P. Romary, P. Signer, R. Wieler
  1106

A Refined Method for the Calculation of Residence Times and Shielding Depths for Two-Stage Irradiation Models and the Determination of the Depth Dependency of Cosmogenic 131XE/126XE and 83KR/78KR
O. Eugster
  1107

The Solar Wind and Cosmic-Ray Exposure History of Soil from Drive Tube 74001, a Unmixed Lunar Regolith
O. Eugster, P. Eberhardt, J. Geiss, N. Grogler
  1108

Grain Formation in Supernovae and Isotopic Anomalies in the Early Solar System
S. W. Falk, J. M. Lattimer, S. H. Margolis, D. N. Schramm
  1109

Meteoritic Crater Shunak, the Central Kazakhstan, USSR
V. I. Fel'Dman, L. B. Granovskii
  1110

The Magnetic Properties of Lunar Soils and Soil-Breccias Analogs: to b, or not to B?
B. Fielder, A. Brecher
  1111

Carbon Depth Distributions for Soil Breccias
C. Filleux, R. Spear, T. A. Tombrello, D. S. Burnett
  1112

CARBON-14 in Lunar Soil
E. L. Fireman, J. Defelice, J. D'Amico
  1113

Primary, Secondary and Tertiary Microcraters Populations on Lunar Rocks; Effect of Hypervelocity Impact Microejecta on Primary Populations
R. P. Flavill, R. J. Allison, J. A. M. McDonnell
  1114

Impact-Melt Origin for the Simondium, Hainholz and Pinnaroo Mesosiderites
R. J. Floran, J. B. D. Caulfield, G. E. Harlow, M. Prinz
  1115

Silicate Petrography and Classification of the Mesosiderites
R. J. Floran, M. Prinz
  1116

The Floor of Crater le Mouier: a Study of Lunokhod 2 Data
C. P. Florenskii, A. T. Basilevskii, N. N. Bobina, G. A. Burba, N. N. Grebennik, R. O. Kuzmin, B. P. Polosukhin, V. D. Popovich, A. A. Pronin, L. B. Ronca
  1117

on the Nature of Surficial Layer of Mars: Evidences of Hypsometric Control of Eolian Processes
C. P. Florenskii, A. T. Basilevskii, V. P. Polosukhin
  1118

Chemical and Structural Studies of Brownlee Particles
G. Flynn, P. Fraundorf, J. Shirck, R. M. Walker
  1119

An Evaluation of Evidence for Superheavy Elements in Nature
G. Flynn, P. Fraundorf, J. Shirck, R. M. Walker
  1120

Thermal Conductivity, Thermal Diffusivity, and Specific Heat of Lunar Sample 15031,38
J. A. Fountain, E. A. West
  1121

Rift Valleys of Mars and Earth: Structural Comparisons and Implications
H. Frey
  1122

Lunar Surface Processes and Cosmic Ray Histories Over the Past Several Million Years
J. S. Fruchter, J. C. Evans, L. A. Rancitelli, R. W. Perkins
  1123

SEM Study of Allende Dark Inclusions
R. M. Fruland
  1124

Lodran: the Residue of Limited Partial Melting of Matter like a Hybrid Between H and E Chondrites
T. Fukuoka, M.-S. Ma, H. Wakita, R. A. Schmitt
  1125

Chemical Compositions of Silicate Inclusions in IAB Iron Meteorites
T. Fukuoka, R. A. Schmitt
  1126

Optical and Spectral Properties of the Low Albedo Meteorites: Applications to the Interpretation of the Spectra of Dark Asteroids
M. J. Gaffey
  1127

Effects of Gravity on Explosion Craters
E. S. Gaffney
  1128

The Oldest Mare Basalts: Mineralogy and Petrology
R. P. Gamble, R. A. Coish, L. A. Taylor
  1129

Interpretation of Ground-Based Microwave Measurements of the Moon Using a Detailed Regolith Properties Model
B. L. Gary, S. J. Keihm
  1130

Experimental Studies of Oblique Impact
D. E. Gault, J. A. Wedekind
  1131

Carbon and Sulfur Abundances in 74001/74002 Drive Tubes from Shorty Crater
E. K. Gibson, F. Andrawes
  1132

Nature of the Gas Phases Released from Lunar Rocks and Soils upon Crushing
E. K. Gibson, F. Andrawes
  1133

Thickness of Mare Flow Fronts
A. W. Gifford, F. El-Baz
  1134

Constraints on the Structure of the Lunar Upper Mantle
N. R. Goins, M. N. Toksoz, A. M. Dainty
  1135

Temperature Dependence of the Quantitative Ferromagnetic Resonance of Size Separated Fines Samples
I. B. Goldberg, R. M. Housley, H. R. Crowe
  1136

Time Dependent Electromagnetic Response of the Moon and Conical Plasma Cavity
B. E. Goldstein, L. Hood, C. T. Russell
  1137

Fractional Crystallization of a Liquid Iron Core, an Experimental Study
J. I. Goldstein, J. J. Friel
  1138

Solar Cosmic Ray Produced Noble Gases and Tracks in Mineral Separates from Lunar Fines
K. Gopalan, J. N. Goswami, M. N. Rao, T. R. Venkatesan
  1139

Particle Tracks and Microcraters in LUNA-24 Drill Core Soil Samples
J. N. Goswami, D. Lal
  1140

Some Peculiarities of Geologic Setting of Janisjarvi Impactites, South-West Karelia, USSR
L. B. Granovsky, V. I. Fel'Dman
  1141

An XPS Study of Apollo 17 Orange and Black Glasses
R. W. Grant, R. M. Housley
  1142

Mare Volcanism in the Herigonius Region of the Moon
R. Greeley, P. D. Spudis
  1143

Ridges in Western Columbia Plateau, Washington - Analogs to Mare-Type Ridges?
R. Greeley, P. D. Spudis
  1144

Growth of Planets from Planetesimals
R. Greenberg, J. F. Wacker, W. K. Hartmann, C. R. Chapman
  1145

Principal Characteristics of the Impactites at Brent Crater, Ontario, Canada
R. A. F. Grieve, M. R. Dence
  1146

Simulation Experiments and Solar Wind Sputtering
J. E. Griffith, D. A. Papanastassiou, W. A. Russell, T. A. Tombrello, R. A. Weller
  1147

Chemical-Petrographic Study of Chondrules
J. N. Grossman, A. Kracher, Kallemeyn, J. T. Wasson
  1148

Cooling Histories of Luna 24 Low-Ti Ferrobasalts and Ferrogabbros
T. L. Grove
  1149

Quartz Normative Basalt 15597: the Departure of Residual Liquids and Coexisting Minerals Produced during Dynamic Crystallization from Equilibrium
T. L. Grove
  1150

Compositional Variation and Origin of Lunar Ultramafic Green Glasses
T. L. Grove, D. H. Lindsley
  1151

Magnetic Fields Associated with a Probable Late Cretaceous Astrobleme at Dumas, Saskatchewan
A. Gubins, D. W. Strangway
  1152

On the Partition of Volatile Trace Elements Between Minerals and Agglutinates I. Grain-Size Fractions of Apollo 17 Soils
V. H. R. Gunten, U. Krahenbuhl, G. Meyer, F. Wegmuller, A. Grutter, K. Peng, A. Wyttenbach
  1153

The Allende Meteorite: Solid Solution Characteristics of a New Titanate
S. E. Haggerty
  1154

Apollo 16 Deep Drill: Morphological Characteristics of Oxyhydrates on Rusty Particle 60002,108
S. E. Haggerty
  1155

High Resolution Thorium Maps by Means of Spatial Deconvolution as Applied to the Aristarchus Plateau
E. L. Haines, A. E. Metzger
  1156

KREEP Fission Track Ages from Hadley Delta
E. L. Haines, J. R. Weiss
  1157

Pressure Distribution in Naturally and Experimentally Shocked Granodiorites
R. E. Hanss, B. R. Montague, M. K. Davis, C. Galindo, F. Horz
  1158

Kojak VS Farrah Fawcett-Majors Models of Fractionation by Solar Wind Sputtering
B. Hapke, W. Cassidy
  1159

Reflectance Measurements of Lunar Materials in the Vacuum Ultraviolet
B. Hapke, J. Wagner, A. J. Cohen, W. Partlow
  1160

The Formation of the Outer Planets
A. W. Harris
  1161

Chemical Composition Variations in Lunar Microcrater Pit Glasses
J. B. Hartung, A. El Goresy, K. Nagel
  1162

Lunar Surface Processes: Report of the 12054 Consortium
J. B. Hartung, F. Horz, D. A. Morrison, O. A. Schaeffer, E. Schonfeld, H. Zook
  1163

Trace-Element Fractionation during Crystallization of Thin Tholeiitic Lava Flow
L. A. Haskin, M. M. Lindstrom, M. A. Dungan
  1164

Impact Craters and Accretionary Disks on Lunar Rock 12054
E. E. Hauser, J. B. Hartung, D. A. Morrison, H. A. Zook
  1165

Chemical Mixing Model Studies of Selected Lunar Regions
B. R. Hawke
  1166

Criteria for the Identification of Imbrium Ejecta and Local Components in the Apollo 14 Samples
B. R. Hawke, J. W. Head
  1167

Lunar KREEP Volcanism: Geologic Evidence for History and Mode of Emplacement
B. R. Hawke, J. W. Head
  1168

Effects of Compositional Variation on Absorption Spectra of Lunar Pyroxenes
R. M. Hazen, P. M. Bell, H. K. Mao
  1169

Origin of Central Peaks and Peak Rings: Evidence from Peak-Ring Basins on Moon, Mars, and Mercury
J. W. Head
  1170

Geologic Characteristics of Lunar Highland Volcanic Domes (gruithuisen and Mairan Region) and Possible Eruption Conditions
J. W. Head, P. C. Hess, T. B. McCord
  1171

Petrology of a Sequence of Pyroclastic Rocks from the Valley of Taurus-Littrow (apollo 17 Landing Site)
G. H. Heiken, D. S. McKay, R. Gooley
  1172

Geophysical and Geochemical Evolution of the Lunar Magma Ocean
F. L. Herbert, M. J. Drake, C. P. Sonett
  1173

Late Nebular Condensates and Other Materials Collected by the Meteorite Parent Bodies
J. Hertogen, M.-J. Janssens, H. Palme, E. Anders
  1174

Spinel Cataclasites as Samples of the Lower Lunar Crust of the Moon
C. Herzberg, J. A. Wood
  1175

Provenance of Metal and Melt Rock Textures in the Malvern Howardite
R. H. Hewins, L. C. Klein
  1176

Light and Dark Soils at Apollo 16 Revisited
D. Heymann
  1177

Terrestrial Krypton and Xenon, are these Freaks?
D. Heymann, R. Palma
  1178

Mixing of Major Soil Components in the Apollo 16 Drill Core
D. Heymann, J. Ray, M. Dziczkaniec, R. Palma
  1179

Test for Buried Regolith Surfaces in Apollo 16 Cores
D. Heymann, J. Ray, M. Dziczkaniec, R. Palma
  1180

Transport of Terrestrial Atmospheric Gases to the Moon
H. K. Hills, J. W. Freeman
  1181

Central Pit Craters on Mars
C. A. Hodges
  1182

Table Mountains of Mars
C. A. Hodges, H. J. Moore
  1183

Gravitational and Radiative Effects on the Thermal Escape of Gases from the Moon
R. R. Hodges
  1184

The Magnetization of the Lunar Crust as Deduced from Orbital Surveys
L. L. Hood, C. T. Russell, P. J. Coleman
  1185

Deep Magnetic Sounding of the Moon in the Geomagnetic Tail and Plasma Sheet
L. L. Hood, G. Schubert
  1186

Effect of Interstitial Gaseous Pressure on Thermal Conductivity of Apollo 12 Simulant Lunar Soil
K. Horai, J. L. Winkler
  1187

Thermal Diffusivity of Apollo 11 Samples 10020,44 and 10065,23
K. Horai, J. L. Winkler
  1188

How Thick are Lunar Mare Basalts?
F. Horz
  1189

Clast Population Studies in the "bunte Breccia" Deposits of the Ries Crater, Germany
F. Horz, V. R. Oberbeck
  1190

Regolith Evolution on Small Bodies
K. Housen, L. L. Wilkening, R. Greenberg, C. R. Chapman
  1191

Modeling Lunar Volcanic Eruptions
R. M. Housley
  1192

Growth and Evolution of Lunar Soil: a Model Based on Agglutinitic Glass
H.-N. Hu, L. A. Taylor
  1193

Improvements in Orbital X-Ray Fluorescence Data Reduction Procedures
N. J. Hubbard, F. Vilas, J. E. Keith
  1194

Solar Corrections for the Apollo Orbital X-Ray Fluorescence Data
N. J. Hubbard, F. Vilas, J. E. Keith
  1195

Electrical Conductivity of Orthopyroxene; Measurements and Implications
J. S. Huebner, A. Duba, L. B. Wiggins, H. E. Smith
  1196

Viking Soil: Chemical Activity from Surface Frosts?
R. L. Huguenin
  1197

40AR-39AR Ages of Single Orange Glass Balls and Highland Breccia Phenocrysts
J. C. Huneke, G. J. Wasserburg
  1198

Partitioning of Rare Earth Elements among Armalcolite, Ilmenite and Mare Basalt Liquid
A. J. Irving, D. E. Singleton, R. B. Merrill
  1199

The Significance of Low-Ca Inverted Pigeonites in Crystallization Trends of Diogenites and Eucrites
T. Ishii, H. Takeda, K. Yanai, M. Miyamoto
  1200

Linear Groups of Lunar Craters
L. D. Jaffe, E. O. Bulkley
  1201

Modeling of the Martian Surface: Thermal Inertia and Related Characteristics
B. M. Jakosky
  1202

Constraints on Lunar Formation by Impact Vaporization
B. M. Jakosky, T. J. Ahrens
  1203

Consortium Breccia 73255: Petrology of Aphanitic Lithologies
O. B. James, J. W. Hedenquist
  1204

Spinel-Bearing Troctolitic Basalt 73215,170: Texture, Mineralogy, and History
O. B. James, J. W. Hedenquist
  1205

Anorthite and Lunar Anorthosite Compressed to High Pressures
R. Jeanloz, T. J. Ahrens
  1206

Geochemistry and Dating of a New Type White Inclusion of Allende
E. K. Jessberger, B. Dominik, T. Staudacher, K. Nagel, A. El Goresy
  1207

Solar System Actinide Abundances: II. The Distribution of U and PU in the ST. Severin Chondrite
J. H. Jones, D. S. Burnett
  1208

A Laterally Inhomogeneous Moon: CL-P205, Rb-Sr Evidence
S. Jovanovic, K. J. Jensen, G. W. Reed
  1209

HG and PB in Lunar Surface Processes
S. Javanovic, G. W. Reed
  1210

Jetting in Silicates for Low Velocity Oblique Impacts
P. J. Juda, T. J. Ahrens
  1211

The Carbon Content of Finely Divided Lunar Iron
A. J. T. Jull, C. T. Pillinger, A. Stephenson
  1212

Track Studies in Four Samples of Luna 24 Core
L. L. Kashkarov, L. I. Genaeva, A. K. Lavrukhina
  1213

Planetary Thermal Evolution during Accretion
W. M. Kaula
  1214

Carbon Isotope Systematics in the Apollo 16 Regolith
J. F. Kerridge, I. R. Kaplan, C. Petrowski
  1215

Peculiarities of Solar Wind in Lunar Olivines
J. Kiko, T. Kirsten, D. Ries
  1216

Constraints Imposed on the Cooling History of a Nebula by the Growth of Grains and Inclusions
B. K. Kothari
  1217

A Structural Study of the Kentland, Indiana Impact Site
R. T. Laney, W. R. Vanschmus
  1218

Paleointensity Determination from Allende Chondrules
M. Lanoix, D. W. Strangway, G. W. Pearce
  1219

Degradation of Lunar Basalts during Thermal Heating in and its Relation to Paleointensity Measurements
E. E. Larson
  1220

Passive Seismic Experiment: a Summary of Current Status
G. V. Latham, H. J. Dorman, P. Horvath, A. K. Ibrahim, J. Koyama, Y. Nakamura
  1221

Chemical Study of Size Fractions of Apollo 17 Deep Drill Cores 70009-70006
J. C. Laul
  1222

146SM/147SM Ratio as a Measure of the Past Cosmic Ray Flux
J. C. Leroulley, H. Mabuchi, Y. Yokoyama, G. Lambert
  1223

The Surface Texture of Vesta
T. Lebertre, B. Zellner
  1224

Xenon in Primitive Chondrites: how Many Components?
R. S. Lewis, L. Alaerts, E. Anders
  1225

A Comparison of Independent Methods of Measuring Lunar Magnetic Fields
B. R. Lichtenstein, P. J. Coleman, C. T. Russell
  1226

A Search for Impact Crater-Associated Surface Magnetic Fields in Mare Regions
R. P. Lin
  1227

Dynamic Melting and Crystallization Studies on a Lunar Soil
G. E. Lofgren, D. Smith
  1228

Pyroxene Stability and the Composition of the Lunar Magma Ocean
J. Longhi
  1229

Heavy Rare Metals and Magnesium Isotopic Anomalies in Allende and Leoville Calcium-Aluminum Rich Inclusions
J. C. Lorin, M. C. Michel-Levy
  1230

Cosmic-Ray Tracks-Spallation NE-22 Correlation in Chondrites: Pre-Atmospheric Size and Pre-Irradiation Histories
J. C. Lorin, G. Poupeau
  1231

Large Grabens and Lunar Tectonism
B. K. Lucchitta, J. A. Watkins
  1232

Sm-Nd Systematics of KREEP
G. W. Lugmair, R. W. Carlson
  1233

Incomplete Mixing of Products from R-,P-, and S-Process Nucleosynthesis: Sm-Nd Systematics in Allende Inclusions
G. W. Lugmair, K. Marti, N. B. Scheinin
  1234

Chemistry and Petrogenesis of Apollo 15 Basalts
M.-S. Ma, R. A. Schmitt
  1235

Chemistry of 10085 Fragments and Apollo 11 Basalts and Breccias
M.-S. Ma, R. A. Schmitt
  1236

Chemistry of 12033 Fragments
M.-S. Ma, R. A. Schmitt
  1237

Refractory Element Rich Inclusions in c1 and c2 Meteorites
J. D. MacDougall, J. Carlson
  1238

Surface of Mercury: Evidence of Central Volcanism
M. C. Malin
  1239

First Order Surface Wave Scattering Solution for Synthesizing Lunar Seismogram
P. E. Malin, R. A. Phinney
  1240

12054 Consortium: More on Microcraters
J. C. Mandeville
  1241

Crystal Field Spectra of Luna 24 Glass
A. L. Mao, P. M. Bell, H. K. Mao
  1242

Search for Pieces of the Ancient Lunar Crust: a Study of Clasts in Rock 67915
K. Marti, P. Eberhardt, N. Grogler, K. Keil, G. Lugmair, A. Stettler, G. J. Taylor, R. D. Warner
  1243

Crystallization of Impact Melt in Boltysh Crater
V. L. Masaitis, A. N. Danilin, L. S. Bogomol'Naya
  1244

Collisional Evolution of Mass-Distribution Spectrum of Planetesimals
T. Matsui
  1245

Mineralogic/petrologic Study of Murchison c2 Chondrite Heated from 400-1400 Degrees C
S. D. Matza, M. E. Lipschutz
  1246

A Finite-Element Model of Multi-Ring Basin Ridge Systems
T. A. Maxwell
  1247

Zr and nb Distribution Coefficients: Further Constraints on the Genesis of High-Ti Mare Basalts and KREEP
I. S. McCallum, M. P. Charette
  1248

Characterization of Mars Surface Units
T. B. McCord, R. B. Singer
  1249

Whence Low Velocity Lunar Accreta? Directional Anisotropic Measurements from Ancient and Modern Lunar Surface Sensors
J. A. M. McDonnell
  1250

Feldspathic Granulite 79215: Conditions of Metamorphism and Age
J. J. McGee, A. E. Bence, O. A. Schaeffer
  1251

Grain Size Distribution of Samples from Core 74001 and 74002
D. S. McKay
  1252

Petrology, Trace Element Chemistry and Chronology of Kreep-Rich Melt Rock 14078
G. A. McKay, H. Wiesmann, J. Wooden, B. Bansal
  1253

Further Investigations of the Role of Plastic Failure in Crater Modification
W. B. McKinnon, H. J. Melosh
  1254

Shergottite Meteorites, i: Mineralogy and Petrography
H. Y. McSween, E. Stolper
  1255

Measurement of Lunar Heat Flow Using Orbital Radiometry
W. W. Mendell
  1256

Ion Microprobe Analyses of Aluminous Lunar Glasses
C. Meyer
  1257

Crystallization of a Lunar Magma Ocean
J. W. Minear, C. R. Fletcher
  1258

Pasamonte-Like Clasts in Eucrite Polymict Breccias
M. Miyamoto, H. Takeda, M. B. Duke, K. Yanai
  1259

Noble-Gas Separates from H-Chondrites
R. K. Moniot
  1260

Yield Strengths of Flows on the Earth, Moon, and Mars
H. J. Moore, D. W. G. Arthur, G. G. Schaber
  1261

Small Craters on the Lunar Surface
H. J. Moore, J. M. Boyce, D. A. Johnson
  1262

Siderophile and Volatile Trace Elements in High-Magnesium Australites and in Glasses from Lonar Crater, India
J. W. Morgan
  1263

In Situ Reworking (gardening) of the Lunar Surface: Evidence from the Apollo Cores
R. V. Morris
  1264

The Maturity of Lunar Soils: Concepts and More Values of Is/feo
R. V. Morris
  1265

Depositional and Reworking History for Core 74001/2
R. V. Morris, W. A. Gose, H. V. Lauer
  1266

Maturity and Feo Profiles for the Apollo 17 Deep Drill Core
R. V. Morris, W. A. Gose, H. V. Lauer
  1267

Planetary Tectonics II. a Gravitation Effect
D. A. Morrison, J. L. Warner
  1268

Spatial Distribution and Morphology of Secondary Craters
P. J. Mouginis-Mark
  1269

Transmission Electron Microscope Study of Some Minerals of the Meteorite Allende
W. F. Muller
  1270

Considerations of the Lunar Initial Strontium Ratio
V. R. Murthy
  1271

Rb-Sr and 40AR-39AR Isotopic Systematics of the Estherville Mesosiderite
V. R. Muthry, E. C. Alexander, K. Saito
  1272

Nucleation and Growth of Plagioclase and the Development of Textures in the 14310 Rock System
P. I. Nabelek, L. A. Taylor, G. E. Lofgren
  1273

Thermal History of Some Lunar Materials and Chondritic Meteorites-Magnetic Metallography for Lunar Materials and Meteorites
T. Nagata
  1274

Chemical Investigations of Impact Features on Sample 12001,520 and Microcrater Simulation Experiments
K. Nagel, H. Fechtig, A. El Goresy, N. Grogler
  1275

The Authigenic Component in Lunar Cores
J. S. Nagle
  1276

A Moonquakes: Source Distribution and Focal Mechanism
Y. Nakamura
  1277

Mineralogy and Petrology of the Emery Mesosiderite
C. E. Nehru, R. H. Hewins, D. J. Garcia, G. E. Harlow, M. Prinz
  1278

The Case for at Least Three VLT Mare Magma Types in the Luna 24 Drill Core
R. L. Nielsen, M. J. Drake
  1279

Pyroxene/melt Equilibria: an Update
R. L. Nielsen, M. J. Drake
  1280

I-Xe Dating of Inclusions from IAB Iron Meteorites
S. Niemeyer
  1281

A Study of Gardening in the Lunar Regolith Using 53MN
K. Nishiizumi, M. Imamura, M. Honda, M. T. Murrell, J. R. Arnold
  1282

Consortium Breccia 73255: Electron Petrography of Aphanitic Lithologies and Anorthite Clasts
G. L. Nord, O. B. James
  1283

Chemical and Sr-Isotopic Evolution of Luna 24 Basalts
L. E. Nyquist, H. Wiesmann, B. Bansal, J. Wooden, G. A. McKay
  1284

A Shocking Rb-Sr Age for the Shergotty Achondrite
L. E. Nyquist, J. Wooden, B. Bansal, H. Wiesmann
  1285

Late Stage Crater Flows and the Effect of Strength on Transient Crater Depth
J. D. O'Keefe, T. J. Ahrens
  1286

Chemical-Petrological Studies of Individual Chrondules from the Richardton Meteorite
R. K. O'Nions, S. R. Carter, N. M. Evensen, P. J. Hamilton, W. I. Ridley
  1287

Emplacement of Lunar Crater Deposits
V. R. Oberbeck, R. H. Morrison
  1288

Early Lunar Differentiation Constraints from U-Th Sm-Nd and Rb-Sr Model Age
F. Oberli, M. T. McCulloch, F. Tera, D. A. Papanastassiou, G. J. Wasserburg
  1289

An Olivine Cooling Speedometer
P. I. K. Onorato, D. R. Uhlmann, L. A. Taylor, R. A. Coish
  1290

An Alternative Model for the Manicouagan Impact Structure
D. L. Orphal, P. H. Schultz
  1291

Effects of Temperature on the Electronic Spectra of Minerals: Applications to Heated Planetary Surfaces
M. D. Osborne, K. M. Parkin, R. G. Burns
  1292

The Ries Crater Continuous Deposits: Sedimentological Investigations of NASA Drill Cores
R. Ostertag, D. Stoffler
  1293

Characteristics of Microcracks in Samples from the Drill Hole Nordlingen 1973 IN the Ries Crater, Germany
E. R. Padovani, M. L. Batzle, G. Simmons
  1294

Similar Flows of Lunar and Terrestrial Volcanoes
S. I. Pai, Y. Hsu, J. A. O'Keefe
  1295

A Comparison of the Most Primitive Samples from the Earth, the Moon and the Eucrite Parent Body
H. Palme, H. Baddenhausen, H. Hofmeister, B. Spettel, H. Wanke, G. Kurat
  1296

New Data on Meteoritic Material at Terrestrial Impact Craters
H. Palme, R. Wolf, R. A. F. Grieve
  1297

Pandora's Box of the Nuclides
D. A. Papanastassiou, J. C. Huneke, T. M. Esat, G. J. Wasserburg
  1298

Apollo 16 Drive Tube 60009.90010. Part III. Total Major Element Partitioning among the Regolith Components or Chemical Mixing Models with Petrologic Credibility
J. J. Papike, D. T. Vaniman, E. L. Schweitzer, K. Baldwin
  1299

Chemical Compositional Variations Produced by Impact-Explosion Event: Some Additional Data and Results
O. V. Parfenova, O. I. Yakovlev, V. D. Popovich
  1300

An Experimental Investigation of Fractionation by Sputter Deposition
D. Paruso, W. Cassidy, B. Hapke
  1301

Contribution of Tidal Dissipation to Lunar Thermal History
S. J. Peale, P. Cassen
  1302

Magnetic Measurements of an Apollo 15 Deep Core
G. W. Pearce
  1303

Lunar Dust Transport by Photoelectric Charging
M. A. Pelizzari, D. R. Criswell
  1304

Shaw Revisited: Cooling History and U-Pu Distribution in Phosphates
P. Pellas, M. Bourot-Denise, D. Storzer
  1305

Fission Xenon in Carbonaceous Meteorites
R. O. Pepin, D. Phinney
  1306

Antipodal Effects of Major Basin-Forming Impacts on Mars
J. E. Peterson
  1307

Volcanism Associated with the Hellas Basin of Mars
J. E. Peterson
  1308

Lunar Sounder Revisited: Stratigraphic Correlations and Structural Inferences
R. J. Phillips, T. A. Maxwell
  1309

Light Elements in Minerals of an Allende Inclusion
D. Phinney, B. Whitehead
  1310

Geology of the West Clearwater, Quebec Impact Structure, Part Iii: SEM Petrology of Very Fine-Grained Units
W. C. Phinney, C. H. Simonds, A. Cochran, P. McGee
  1311

Distribution of Basalt Types on the Front Side of the Moon
C. Pieters, T. B. McCord
  1312

Statistical Classification of Asteroids from Surface Properties
R. J. Pike
  1313

Volcanism on Earth and Mars: Topographic Analogs of Large Central Edifices
R. J. Pike
  1314

Secondary-Impact Craters on the Moon: Topographic Form and Geologic Process
R. J. Pike, D. E. Wilhelms
  1315

Carbon Chemistry Studies of Agglutinate Separates from Soil 12023
C. T. Pillinger, A. J. T. Jull
  1316

Data Predictions for the Lunar Samples
D. D. Pratt, C. B. Moore, M. L. Parsons
  1317

Regression Analysis and Classification Prediction for Apollo 17 Mare Basalts
D. D. Pratt, C. B. Moore, M. L. Parsons
  1318

Petrologic Studies Bearing on the Origin of the Lodran Meteorite
M. Prinz, R. Klimentidis, G. E. Harlow, R. H. Hewins
  1319

Measurement of Post-Shock Temperatures in Silicates
S. A. Raikes, T. J. Ahrens
  1320

Lithium Isotopic Composition in Stone Meteorites
R. S. Rajan, L. Brown, D. J. Whitford, R. B. Roberts, F. Tera
  1321

Galactic Cosmic Ray Variations during the Period 1967 TO 1977; Cosmic Radionuclide Production Meteorites
L. A. Rancitelli, J. C. Evans, J. S. Fruchter, R. W. Perkins
  1322

Melting of the Moon by Heterogeneous Accretion
G. A. Ransford, W. M. Kaula
  1323

Noble Gas Studies of LUNA-24 Drill Core Samples
M. N. Rao, T. R. Venkatesan
  1324

Stratigraphy in Apollo Drill Core Segment 60003
J. Ray, M. Dziczkaniec, A. Walker, D. Heymann
  1325

Depth Variations of Spallogenic Nuclides in Meteorites
R. C. Reedy, G. F. Herzog, E. K. Jessberger
  1326

Flash Floods on Mars from Ejecta Emplacement
D. E. Rehfuss, J. C. Anselmo, N. K. Kincheloe
  1327

Incompatibility of the Ivanov and Shoemaker Crater Ejection Models
D. E. Rehfuss, J. C. Anselmo, N. K. Kincheloe
  1328

Late-Stage Vaporization during Meteorite Impact
D. E. Rehfuss, J. C. Anselmo, N. K. Kincheloe
  1329

Delivery of VLT Basalt to Taurus-Littrow
D. E. Rehfuss, N. K. Kincheloe, J. C. Anselmo
  1330

Experimental Shock Metamorphism of Dunitic Rocks
W. U. Reimold, D. Stoffler
  1331

Primary Mare Basalts and Green Glass
J. M. Rhodes
  1332

Origin of the Moon
A. E. Ringwood
  1333

Geochemical Constraints on the Existence of a Lunar Core
A. E. Ringwood, S. E. Kesson, J. W. Delano
  1334

Cratering Motions for Bowl-Shaped Impact Craters: a Phenomenological Sequence of Events
D. J. Roddy
  1335

Significance of Melt Inclusions in Olivine of LUNA-24 Samples
E. Roedder, P. W. Weiblen
  1336

Random Scattering of Radio Waves by the Lunar Regolith
J. R. Rossiter, D. W. Strangway
  1337

Radar Depths of Large Martian Craters
L. E. Roth, C. Elachi, R. S. Saunders, G. Schubert
  1338

Superheavy Elements in the Primeval Moon?
S. K. Runcorn
  1339

An Experiment on the Constancy of the SCR Flux Over the Past Two Million Years
G. P. Russ, C. P. Kohl, M. T. Murrell, J. R. Arnold
  1340

Does Mars have an Active Magnetic Dynamo?
C. T. Russell
  1341

Immiscible Silicate Melts in 12013?
M. J. Rutherford, P. C. Hess
  1342

A Possible Role of Carbon in Characterizing the Oxidation State of a Planetary Interior and Originating a Metallic Core
M. Sato
  1343

The Influence of Target Material Strength on the Scaling of Cratering and Eject Data
F. M. Sauer
  1344

Topography Control of Volcanism and Surface Morphology in the Arsis Mons Region of Mars
R. S. Saunders, L. E. Roth, C. Elachi, G. Schubert
  1345

Shock Experiments on Particulate Lunar Basalt-A Regolith Analogue
R. B. Schaal, F. Horz, J. F. Bauer
  1346

The Distribution and Eruptive History of Lava Flow Materials-Tharsis Region of Mars
G. G. Schaber, K. C. Horstman, A. L. Dial
  1347

Ancient Clasts in a 4.0 G.Y. Breccia: Laser 39AR-40AR Analysis of 65015
O. A. Schaeffer, A. E. Bence, G. Eichhorn
  1348

39AR-40AR and Petrologic Study of Mare Crisium: Age and Petrology of Luna 24 Samples 24077,13 and 24077,63
O. A. Schaeffer, A. E. Bence, G. Eichhorn, J. J. Papike, D. T. Vaniman
  1349

Centrifuge Simulation of a 500 Ton Cratering Event
R. M. Schmidt
  1350

Estimates of p, cl, br, and i in Primordial Planetary Bodies
R. A. Schmitt
  1351

Orbital Geochemistry X-Ray of Dark Mantle Deposits and Some Mare Basalt Units
E. Schonfeld, M. J. Bielefeld
  1352

A Medley of Redox States in Lunar Magmas
H. D. Schreiber, T. Thanyasiri, R. A. Legere, H. V. Lauer
  1353

Noble Gas and Element Distribution in Agglutinates of Different Densities
L. Schultz, H. W. Weber, B. Spettel, H. Hintenberger, H. Wanke
  1354

Ejecta Dynamics of Large-Scale Impacts
P. H. Schultz
  1355

Impact Ejecta Emplacement on Mars
P. H. Schultz, D. E. Gault
  1356

Models of Impact Ejecta Emplacement Based on Orbital Infrared Observations
P. H. Schultz, W. Mendell
  1357

The Dark Ring of Orientale: Implications for Pre-Basin Mare Volcanism and a Clue to the Identification of the Transient Cavity Rim
P. H. Schultz, P. A. Spudis
  1358

Evidence for the Dynamic Transformation of Enstatite to MGSIO3 with the Perovskite Structure
C. B. Sclar
  1359

Regional Deformation of Mare Surfaces
D. H. Scott, J. A. Watkins, J. M. Diaz
  1360

Solar Wind Sputtering: an Ineffective Weathering Process on Airless Bodies
R. E. Scott
  1361

Geologic Interpretation of the SKYLAB II S-192 Multispectral Scanner Lunar Images
L. R. Seeger, A. E. Potter, R. H. Wolfe
  1362

Viscous Heating Within Lava Flows: Implications for the Formation of Extremely Long Flows
M. Settle
  1363

Mode of Emplacement of Fahrenheit Ejecta at the Luna 24 Site
M. Settle, M. J. Cintala, J. W. Head
  1364

Rim Slumping Modification of Lunar Craters: Implications for the Depth of Excavation of Basin-Sized Impacts
M. Settle, J. W. Head
  1365

Apollo 16 Drive Tube 60009/60010. Part i: Modal Petrology
S. B. Simon, J. J. Papike, D. T. Vaniman
  1366

Geology of West Clearwater Quebec Impact Structure, Part i Geology and Structure
C. H. Simonds, W. C. Phinney, P. E. McGee, A. Cochran
  1367

Geology of West Clearwater Impact Structure, Quebec, Part II: Petrology
C. H. Simonds, W. C. Phinney, P. E. McGee, A. Cochran
  1368

On Central Uplifts in Three Terrestrial Impact Structures
C. H. Simonds, J. L. Warner, P. E. McGee, A. Cochran
  1369

Mars Gravity: Additional Resolution from Viking Orbit 1
W. L. Sjogren, R. N. Wimberly, D. L. Cain, F. P. Brenkle
  1370

Possible Controls on the Bulk Composition and Origin of the Earth: Further Discussion
J. V. Smith
  1371

Luna 24: Implications for Remote Sampling of Unweathered Regolith
J. V. Smith, I. M. Steele, H. Papp
  1372

Composition of Martian Primary Lavas-Convergence of Model Results
J. R. Smyth, R. Huguenin, T. R. McGetchin
  1373

A Petrogenetic Grid Applicable to Chondrule Formation
J. W. Snellenburg
  1374

Vertical Movement in Mare Basins: Relation to Mare Emplacement, Basin Tectonic and Lunar Thermal History
S. C. Solomon, J. W. Head
  1375

Composition and Origin of the Apennine Bench Formation
P. D. Spudis
  1376

Origin and Distribution of KREEP in Apollo 15 Soils
P. D. Spudis
  1377

Magnetic Field Effects and Remanent Magnetization in a Hypervelocity Impact Experiment
L. J. Srnka, G. Martelli, S. M. Cisowski, M. D. Fuller
  1378

Solar System Actinide Abundances: III. Th/u Fractionation in Carbonaceous Chondrites
M. I. Stapanian, D. S. Burnett, R. Eggers, N. Namboodiri
  1379

Consortium Breccia 73255: 40AR-39AR Dating
T. Staudacher, B. Dominik, E. K. Jessberger, T. Kirsten
  1380

Coorara and Coolamon Meteorites: Ringwoodite and Mineralogical Differences
I. M. Steele, J. V. Smith
  1381

Allende Inclusions: Cathodoluminescence Petrography: Anorthite and Spinel Chemistry: MG Isotopes
I. M. Steele, J. V. Smith, I. D. Hutcheon, R. N. Clayton
  1382

Laboratory Condensation of Silicates
J. R. Stephens, K. Kothari
  1383

Compressional Wave Velocity in Compacting Fine-Grained Powders Under High Vacuum
R. M. Stesky
  1384

Chronology of the Apollo 17 Station 7 Boulder and the South Serenitatis Impact
A. Stettler, P. Eberhardt, J. Geiss, N. Grogler, S. Guggisberg
  1385

Textural Variations of the Crystalline Matrix of Fra Mauro Breccias and a Model of Breccia Formation
D. Stoffler, H.-D. Knoll, V. Stahle, J. Ottemann
  1386

Shergottite Meteorites, II. Experimental Petrology
E. Stolper, H. Y. McSween
  1387

X-Ray Fluorescence Data for Maraldi and its Environs
P. L. Strain, A. W. Gifford, F. El-Baz
  1388

An Examination of Chemical Fractionation during Agglutinate Formation
W. B. Stroube, W. D. Ehmann
  1389

Lunar Sample Paleointensity Experiment Under Controlled Oxygen Fugacity
N. Sugiura, D. W. Strangway, G. W. Pearce
  1390

Iridium Content of Polar Ice and Accretion Rate of Cosmic Matter
H. Takahashi, Y. Yokoyama, E. L. Fireman, C. Lorius
  1391

Nebular Condensation of Moderately Volatile Elements, Their Abundances in Iron Meteorites, and the Quantization of GE and GA Abundances
C. M. Wai, J. T. Wasson, J. Willis, A. Kracher
  1392

Comparison of the Chemical Trends and Crystallography of Pyroxenes for KREEP Basalts with those for Eucrites
H. Takeda, M. Miyamoto, M. B. Duke, T. Ishii
  1393

Geochemical Features of Lunar Rocks from Mare Crisium: the Peculiarities of the Distribution of Rare-Earth Elements and the Problems of Generation of Magmas
L. S. Tarasov, A. F. Kudryashova, G. M. Kolesov
  1394

Petrological Peculiarities of Basaltic Rocks from Mare Crisium
L. S. Tarasov, M. A. Nazarov, I. D. Shevaleevsky, A. S. Gaverdovskaya, M. I. Korina
  1395

Chemical Trends among VLT Mare Basalts and Glasses: Clues to the Nature of Their Parent Magmas
G. J. Taylor, R. D. Warner, K. Keil
  1396

Petrology of Apollo 17 Deep Drill Core. II. Agglutinates as Recorders of Fossil Soil Compositions
G. J. Taylor, S. Wentworth, R. D. Warner, K. Keil
  1397

The Adaptation of a Synchrotron Radiation Source for Small Area Chemical Analysis of Surfaces and the Measurement of Photoelectric Charging
J. W. Taylor, T. M. Rosseel, R. W. Burger
  1398

Geochemical Evolution of the Moon: th, U and K Abundances: Depth of Initial Melting and Pre-Accretion Element Fractionation
S. R. Taylor
  1399

Chemical Constraints on Lunar Highland Petrogenesis
S. R. Taylor, A. E. Bence
  1400

Chemical Characteristics of Ca-Al Inclusions in the Allende Meteorite
S. R. Taylor, B. H. Mason
  1401

High Resolution Radar Map at 7.5 M Wavelength
T. W. Thompson
  1402

Unusual Remote Sensing Signatures of Montes Jura and Crater Plato
T. W. Thompson, T. V. Johnson, D. L. Matson, R. S. Saunders, R. W. Shorthill, S. H. Zisk, H. J. Moore, G. G. Schaber
  1403

Effect of Composition on the Valence of Iron in Basaltic Liquids
C. R. Thornber, P. L. Reoder
  1404

An Assessment of Crustal Thickness Variations on the Lunar Near Side: Models, Uncertainties, and Implications for Crustal Differentiation
C. H. Thurber, S. C. Solomon
  1405

Internal Friction and Modulus Measurements in Lunar and Lunar Analog Rocks
B. R. Tittmann, H. Nadler, J. Curnow, J. M. Richardson
  1406

Magma Production and Migration Within the Moon
D. L. Turcotte, J. L. Ahern
  1407

The Lunar Cataclysm: Energy Influx Inferred from Argon Age Data
G. Turner
  1408

Argon Ages: from Primitive Planetesimals to Differentiated Moon
G. Turner, M. C. Enright, J. Hennessy
  1409

The Formation Kinetics of Lunar Glasses
D. R. Uhlmann, C. A. Handwerker, D. Goncz, P. I. K. Onorato
  1410

Chronology of the Accumulate Eucrite, Moama
D. M. Unruh, J. Hamet, M. Tatsumoto
  1411

Apollo 16 Drive Tube 60009/60010. Part II: Characterization of the Mineral, Lithic and Glass Components
D. T. Vaniman, E. L. Schweitzer, J. J. Papike
  1412

Mare Crisium from a New Angle: Chemical Composition from Low Altitude X-Ray Fluorescence Data
F. Vilas
  1413

Condensation and Stability of Chemically Heterogeneous Substances
R. Wagner, J. W. Larimer
  1414

Dynamic Crystallization of a Eucritic Basalt
D. Walker, M. A. Powell, J. F. Hays
  1415

The Search for Solar Cosmic Ray Proton-Produced NEON-21 and ARGON-38 in Lunar Soils
J. R. Walton, D. Heymann, A. Yaniv
  1416

Are the Siderophile Elements Found in the Lunar Highlands of Truly Meteoritic Origin?
H. Wanke, G. Dreibus, H. Palme
  1417

Disc Evolution Within the Roche Limit
W. R. Ward, A. G. W. Cameron
  1418

Early Solar System Stratigraphy: the Condensation Sequence from Allende to Chondrites, and the Origin of Chondrules
D. A. Wark
  1419

Classification of Allende Coarse-Grained Ca-Al Inclusions
D. A. Wark, J. F. Lovering
  1420

Refractory/platinum Metals and Other Opaque Phases in Allende Ca-Al Inclusions
D. A. Wark, J. F. Lovering
  1421

Planetary Tectonics i: the Role of Water
J. L. Warner, D. A. Morrison
  1422

Petrology of Recrystallized ANT Rocks from Apollo 17 Rake Samples: 72559 (anorthositic Troctolite) and 78527 (norite)
R. D. Warner, K. Keil, G. J. Taylor, C. E. Nehru
  1423

Clasts in Breccias 77517 and 77538: Evidence for Deep-Seated and Immiscible Melt Origins
R. D. Warner, G. J. Taylor, K. Keil
  1424

Green Glassy Rock 78526: an Impact Melt of Very Low-Ti Mare Basalt?
R. D. Warner, G. J. Taylor, K. Keil, C. E. Nehru
  1425

The Quest for Pristine Nonmare Rocks: Nine Nonmare Samples Free of Meteoritic Siderophiles
P. H. Warren, C. E. McEwing, F. Afiattalab, J. T. Wasson
  1426

Urkreep: the Last Dregs of the Lunar Magma Ocean
P. H. Warren, J. T. Wasson
  1427

Rare Gases in Matrix and Clast Samples of 60016
H. W. Weber, L. Schultz
  1428

Petrologic Peculiarities of Melt Inclusions in Luna 24 Samples
P. W. Weiblen
  1429

Lunar Maria and Terrestrial Greenstone-Granite Terranes: Significance of of Similarities and Differences
P. W. Weiblen, K. J. Schulz
  1430

Lunar Velocity Structure Derived from Travel-Time and Amplitude Information of Impact Seismograms
W. Weinrebe
  1431

Spatial Power Spectrum of the Lunar Permanent Magnetic Field
H. Weiss, M. G. McLeod, P. J. Coleman
  1432

Steady-State Populations of Apollo-Amor Objects
G. W. Wetherill
  1433

Oceanus Procellarum: Preliminary Basalt Stratigraphy and Emplacement
J. L. Whitford-Stark, J. W. Head
  1434

Volcano-Tectonic History of Tsiolkovskiy
C. L. Wilbur
  1435

Size-Frequency Distributions of Primary and Secondary Lunar Impact Craters
D. E. Wilhelms, V. R. Oberbeck, H. R. Aggarwal
  1436

A Study of Glass Coatings from Some Apollo 15 Breccias
S. R. Winzer, K. Breen, A. Ritter, M. Meyerhoff, P. J. Schuhmann
  1437

A Lunar Core and Other Matters: Fine Tuning of the Lunar Electromagnetic Gain
M. J. Wiskerchen, C. P. Sonett
  1438

Lunar Concentric Craters
C. A. Wood
  1439

Lunar Crater Morphometry: New Data
C. A. Wood, L. Andersson
  1440

Interior Morphometry of Fresh Martian Craters: Preliminary Viking Results
C. A. Wood, M. J. Cintala, J. W. Head
  1441

Pallasites and the Growth of Parent Meteorite Planets
J. A. Wood
  1442

The Chemistry of Glassy Agglutinates
M. R. Woodcock, C. T. Pillinger
  1443

BI and 208PB Microdistributions in Ordinary Chondrites
D. S. Woolum, R. Mascitelli, D. S. Burnett, L. S. August
  1444

The Expected Frequency of Random Doublet Craters
A. Woronow
  1445

A Regional Analysis of Martian Crater Populations
A. Woronow
  1446

Physics of Planetary Magmatism. Computer Simulation of Crystallization Differentiation in the Processes of Cooling and Solidification of Large Magmatic Masses
A. A. Yaroshevsky, M. Ya. Frenkel
  1447

29SI/28SI and 30SI/28SI of Meteorites and Allende Inclusions
H. W. Yeh, S. Epstein
  1448

The Effects of Dissipation in the Moon on the Lunar Physical Librations
C. F. Yoder, W. S. Sinclair, J. G. Williams
  1449

Ion Probe Measurents of mg, TI and fe Surface Concentrations in Plagioclase Crystals from Lunar Soil Samples
E. Zinner, S. Dust, J. Chaumont, J. C. Dran
  1450

Topographic Evolution of Mare Crisium and its Relation to Mare Filling
S. Zisk, J. Adams, J. W. Head, T. B. McCord, C. Pieters
  1451

Loosely Bound Dust, Impact Pits, and Accreta on Lunar Rock 12054,54
H. A. Zook, J. B. Hartung, E. Hauser
  1452

The Cratering on the Earth's Surface by the Meteoritic Impact
I. T. Zotkin, A. I. Dabizha, V. V. Fedynsky
  1453

Antarctic Meteorites
K. Yanai, W. A. Cassidy, M. Funaki, B. P. Glass
  1454

Subsolidus Shock-Induced Reduction of FE+2 on the Lunar Surface: an Experimental Assessment
C. B. Sclar, J. F. Bauer, R. L. Kastelic
  1455