Ninth Lunar and Planetary Science Conference

		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

Ninth Lunar and Planetary Science Conference

TABLE OF CONTENTS