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