Tenth Lunar and Planetary Science Conference

		no.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Primitive Troilite D. D. Clayton		1081

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The Diverse AL Concentrations of Mare Basalts N. Hubbard		1208

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Relative Velocities of Planetesimals W. M. Kaula		1228

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Refractory Element Fractionation J. W. Larimer		1247

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

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

The Intercrater Plains of Mercury M. A. Leake		1250

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Geology of Venus M. C. Malin		1272

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

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

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

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

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

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

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

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

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

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

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

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

Matrix Variations in CM Chondrites H. Y. McSween		1285

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

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

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

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

Thermoluminescence Measurements of Antarctic Meteorites C. L. Melcher		1290

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Estimated Viscosities of Arsia Mons Lava Flows E. Schonfeld		1373

Origin of Valles Marineris E. Schonfeld		1374

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Production of Volcanic Sulfate Aerosols on Mars M. Settle		1390

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Meteorite Impact in the Ocean R. A. Strelitz		1417

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Classification of Planet Crossing Asteroids J. G. Williams		1474

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

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

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

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

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

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

Backscatter Measurements and Impacted Surfaces M. Wolff		1481

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

Crater Degradation Through Lunar History C. A. Wood		1483

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

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

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

Lunar and Martian Crater Classes A. Woronow		1487

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

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

I-Xe Chronology of Allende Inclusions A. Zaikowski		1490

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

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

Tenth Lunar and Planetary Science Conference

TABLE OF CONTENTS