Lunar and Planetary Institute






24st Lunar and Planetary Science Conference

TABLE OF CONTENTS

no.

Moessbauer spectroscopy of the SNC meteorite Zagami
D. P. Agerkvist, L. Vistisen
  1001

Production of electronic grade lunar silicon by disproportionation of silicon difluoride
W. N. Agosto
  1002

Rates of fluvio-thermal erosion on Mars
J. Aguirre-Puente, F. M. Costard, R. Posado-Cano
  1003

Giant impact-induced atmospheric blow-off
T. J. Ahrens
  1004

Dispersion of the ratios of cosmogenic isotopes of noble gases in chondrites of different cosmic-ray exposure ages
V. A. Alexeev
  1005

Peculiarities of distributions of the cosmic-ray exposure ages of H chondrite falls and finds
V. A. Alexeev
  1006

Search for effects of a supernova explosion 30 to 40 thousand years ago in chondrites
V. A. Alexeev, G. K. Ustinova
  1007

Morphology of large impact craters and basins on Venus: Implications for ring formation
J. S. Alexopoulos, W. B. McKinnon
  1008

Effects of microscopic iron metal on the reflectance spectra of glass and minerals
C. C. Allen, R. V. Morris, H. V. Lauer Jr., D. S. McKay
  1009

Encouraging Interest in Space Exploration and Planetary Science Among Navajo Primary Students
J. H. Allton, C. S. Allton
  1010

Calorimetric thermometry of meteoritic troilite: A feasibility study
J. H. Allton, J. L. Gooding
  1011

Cold Press Sintering of Simulated Lunar Basalt
D. A. Altemir
  1012

General Overview of an Integrated Lunar Oxygen Production/Brickmaking System
D. A. Altemir
  1013

Thermodynamics of lunar ilmenite reduction
B. H. Altenberg, H. A. Franklin, C. H. Jones
  1014

Interstellar Graphite in Murchison: Continued Search for Isotopically Distinct Components
S. Amari, E. Zinner, R. S. Lewis
  1015

Fourier Domain Target Transformation Analysis in the Thermal Infrared
D. L. Anderson
  1016

Lineament analysis and tectonic interpretation for the Tharsis region
R. Anderson
  1017

Descriptions and preliminary interpretations of cores recovered from the Manson Impact Structure (Iowa)
R. R. Anderson, B. J. Witzke, J. B. Hartung, E. M. Shoemaker, D. J. Roddy
  1018

A Space Studies Curriculum for Small Colleges and Universities
J. O. Annexstad, R. C. Melchior
  1019

Measurements of cosmogenic nuclides in lunar rock 64455
J. R. Arnold, C. P. Kohl, K. Nishiizumi, M. W. Caffee, R. C. Finkel, J. R. Southon
  1020

Marslink
R. E. Arvidson, L. D. Friedman, C. J. Stadum
  1021

Carbon in weathered ordinary chondrites from Roosevelt County
R. D. Ash, C. T. Pillinger
  1022

Ejecting basaltic achondrites from Vesta: Hydrodynamical impact models
E. Asphaug, H. J. Melosh, E. Ryan
  1023

Venus small volcano classification and description
J. C. Aubele
  1024

The LOS Alamos Neutron Spectrometer for the Lunar Scout-I Mission
G. Auchampaugh, B. Barraclough, R. Byrd, D. Drake, W. Feldman, C. Moss, R. Reedy
  1025

Vaporization by Shock Loading of Albite, Jadeite, and Pyrex Glass: Experimental Study
D. D. Badjukov, T. L. Petrova
  1026

Shock Transformations in Quartzite
D. D. Badjukov, E. A. Koslov, Yu. N. Zhugin, E. V. Abakshin
  1027

Reconstruction of the dynamics of the 1800-1801 Hualalai eruption: Implications for planetary lava flows
S. Baloga, P. Spudis
  1028

Horizontal stresses induced by vertical processes in planetary lithospheres
W. B. Banerdt
  1029

Encouraging Female Interest in Science and Methematics
N. G. Barlow
  1030

Increased depth-diameter ratios in the Medusae Fossae Formation deposits of Mars
N. G. Barlow
  1031

Behaviour of Vortices Generated by an Advancing Ejecta Curtain in Theory, in the Laboratory, and on Mars
O. S. Barnouin, P. H. Schultz
  1032

Mineralogy of Chondritic Interplanetary Dust Particle Impact Residues from LDEF
R. A. Barrett, M. E. Zolensky, R. Bernhard
  1033

Estimation of age of Dali-Ganis rifting and associated volcanic activity, Venus
A. T. Basilevsky
  1034

Regional geology of the VEGA landing sites: Tentative results of photogeologic mapping
A. T. Basilevsky, C. M. Weitz
  1035

Regional geology of the Venera landing sites: Tentative results of photogeologic mapping
A. T. Basilevsky, C. M. Weitz
  1036

Interpretation of lunar and planetary electromagnetic scattering using the full wave solutions
E. Bahar, M. Haugland
  1037

Apollo 16 core 60013/14 as a product of path 1 and path 2 regolith evolution processes
A. Basu, K. McBride, S. J. Wentworth, D. S. McKay
  1038

Nitrogen and Noble Gases in a Glass Sample from LEW88516
R. H. Becker, R. O. Pepin
  1039

The Stability of Hibonite and Other Aluminous Phases in Silicate Melts: Implications for the Origin of Hibonite-bearing Inclusions
J. R. Beckett, E. Stolper
  1040

A comparison of telescopic and Phobos-2 ISM spectra of Mars in the short-wave near-infrared (0.76-1.02 microns)
J. F. Bell III, J. F. Mustard
  1041

An observational search for CO2 ice clouds on Mars
J. F. Bell III, W. M. Calvin, J. B. Pollack, D. Crisp
  1042

Changes in Hawaiian palagonite FE mineralogy associated with thermal alteration: Implications for Mars
J. F. Bell III, R. V. Morris, J. B. Adams
  1043

Petrography and preliminary interpretations of the crystalline breccias from the Manson M-1 core
M. S. Bell, M. K. Reagan, R. R. Anderson, C. T. Foster Jr.
  1044

Orbital simulations of satellite escape/capture and the origin of satellites such as Triton
L. A. M. Benner, W. B. McKinnon
  1045

The great 8 MA event and the structure of the H-chondrite parent body
P. H. Benoit, D. W. G. Sears
  1046

Meteorites from recent amor-type orbits
P. H. Benoit, D. W. G. Sears
  1047

Natural thermoluminescence profiles in lunar cores and implications for meteorites
P. H. Benoit, D. W. G. Sears
  1048

Metallographic cooling rates of L-group ordinary chondrites
M. E. Bennett, H. Y. McSween Jr.
  1049

Explicit 3D continuum fracture modeling with smooth particle hydrodynamics
W. Benz, E. Asphaug
  1050

Composition and modal frequencies of hypervelocity particles less than 1 millimeter in diameter in low-Earth orbit
R. P. Bernhard, T. H. See, F. Hoerz
  1051

Thermal studies of Martian channels and valleys using Termoskan data
B. H. Betts, B. C. Murray
  1052

Spectral analysis of the gravity and topography of Mars
B. G. Bills, H. V. Frey, W. S. Kiefer, R. S. Nerem, M. T. Zuber
  1053

Global organization of tectonic deformation on Venus
F. Bilotti, C. Connors, J. Suppe
  1054

Venus' center of mass - center of figure displacement and implications
D. L. Bindschadler, G. Schubert
  1055

The asteroid-meteorite connection: Forging a new link to Vesta as the parent body of basaltic achondrite (HED) meteorites
R. P. Binzel
  1056

Alkali-granitoids as fragments within the ordinary chondrite Adzhi-Bogdo: Evidence for highly fractionated, alkali-granitic liquids on asteroids
A. Bischoff
  1057

Reflectance spectra of sulfate-and carbonate-bearing Fe(3+)-doped montmorillonites as Mars soil analogs
J. L. Bishop, C. M. Pieters, R. G. Burns
  1058

The effects of atmospheric pressure on infrared reflectance spectra of Martian analogs
J. L. Bishop, C. M. Pieters, S. F. Pratt, W. Patterson
  1059

Stable isotope analyses of the peralkaline volcanics Gregory Rift Valley, Kenya
S. Black, R. MacDonald, A. E. Fallick, M. Kelly
  1060

Th-230 - U-238 series disequilibrium of the Olkaria basalts Gregory Rift Valley, Kenya
S. Black, R. MacDonald, M. Kelly
  1061

Th-230 - U-238 series disequilibrium of the Olkaria basalts Gregory Rift Valley, Kenya: Petrogenesis
S. Black, R. MacDonald, M. Kelly
  1062

Th-230 - U-238 series disequilibrium of the Olkaria rhyolites Gregory Rift Valley, Kenya: Petrogenesis
S. Black, R. MacDonald, M. Kelly
  1063

Th-230 - U-238 series disequilibrium of the Olkaria rhyolites Gregory Rift Valley, Kenya: Residence times
S. Black, R. MacDonald, M. Kelly
  1064

Using high spectral resolution spectrophotometry to study broad mineral absorption features on Mars
D. L. Blaney, D. Crisp
  1065

Using solar flare track densities to determine the origin of interplanetary dust particles
G. E. Blanford
  1066

Spectral and multispectral imaging studies of lunar mantled mare deposits
D. T. Blewett, B. R. Hawke, P. G. Lucey, J. F. Bell III, R. Jaumann, H. Hiesinger, G. Neukum, P. D. Spudis
  1067

Strontium and oxygen isotope study of M-1, M-3 and M-4 drill core samples from the Manson impact structure, Iowa: Comparison with Haitian K-T impact glasses
J. D. Blum, C. P. Chamberlain, M. P. Hingston, C. Koeberl
  1068

Preliminary results of Mn partitioning experiments on Murchison analogues
J. S. Boesenberg, J. S. Delaney
  1069

Noble Gases in LEW88516 Shergottite: Evidence for Exposure Age Pairing with ALH77005
D. D. Bogard, D. H. Garrison
  1070

Ar-39 - Ar-40 ages of acapulcoites and lodranites: Evidence for early parent body heating
D. D. Bogard, D. H. Garrison, T. J. McCoy, K. Keil
  1071

Arroyo el Mimbral, Mexico, K/T unit: Origin as debris flow/turbidite, not a tsunami deposit
B. F. Bohor, W. J. Betterton
  1072

K/T spherules from Haiti and Wyoming: Origin, diagenesis, and similarity to some microtektites
B. F. Bohor, B. P. Glass, W. J. Betterton
  1073

The Solubility of Gold in Silicate Melts: First Results
A. Borisov, H. Palme, B. Spettel
  1074

29Si NMR Spectroscopy of Naturally-Shocked Quartz from Meteor Crater, Arizona: Correlation to Keiffer's Classification Scheme
M. B. Boslough, R. T. Cygan, R. J. Kirkpatrick
  1075

Midplane temperatures in the solar nebula
A. P. Boss
  1076

Chondrule formation by clumpy accretion onto the solar nebula
A. P. Boss, J. A. Graham
  1077

Initiating solar system formation through stellar shock waves
A. P. Boss, E. A. Myhill
  1078

Impact mineralogy and chemistry of the cretaceous-tertiary boundary at DSDP site 576
J. A. Bostwick, F. T. Kyte
  1079

Collision lifetimes and impact statistics of near-Earth asteroids
W. F. Bottke Jr., M. C. Nolan, R. Greenberg
  1080

Age of Popigai impact event using the Ar-40 - Ar-39 method
R. J. Bottomley, R. A. F. Grieve
  1081

Minor and trace element composition and age of Yukon probable-microtektites
S. Q. Boundy-Sanders, R. L. Hervig
  1082

A structural origin for the cantaloupe terrain of Triton
J. M. Boyce
  1083

Trace-Element Abundances in Several New Ureilites
W. V. Boynton, D. H. Hill
  1084

Compositional and Textural Information from the Dual Inversion of Visible, Near and Thermal Infrared Remotely Sensed Data
R. A. Brackett, R. E. Arvidson
  1085

Unequilibrated, equilibrated, and reduced aggregates in anhydrous interplanetary dust particles
J. P. Bradley
  1086

Carbon Analyses of IDPs Sectioned in Sulfur and Supported on Beryllium Films
J. P. Bradley, L. Keller, K. L. Thomas, T. B. Vander Wood, D. E. Brownlee
  1087

Modern shelf ice, equatorial Aeolis Quadrangle, Mars
G. R. Brakenridge
  1088

Mineralogy versus bulk composition of the carbonaceous chondrite clast Kaidun 2
F. Brandstaetter, G. Kurat, A. V. Ivanov, H. Palme, B. Spettel
  1089

A structural and petrographic investigation of the pretoria saltpan impact structure
D. Brandt, W. U. Reimold
  1090

Geophysical signature of the Pretoria saltpan impact structure and a possible satellite crater
D. Brandt, R. J. Durrheim, W. U. Reimold
  1091

Carbonaceous chondrite clasts in the Kapoeta howardite
A. J. Brearley, J. J. Papike
  1092

Chondrite thermal histories from Low-CA pyroxene microstructures: Autometamorphism versus prograde metamorphism revisited
A. J. Brearley, R. H. Jones, J. J. Papike
  1093

SXRF determination of trace elements in chondrule rims in the unequilibrated CO3 chondrite, ALH A77307
A. J. Brearley, S. Bajt, S. R. Sutton, J. J. Papike
  1094

Martian particle size based on thermal inertia corrected for elevation-dependent atmospheric properties
N. T. Bridges
  1095

Multiple nitrogen components in lunar soil sample 12023
D. R. Brilliant, I. A. Franchi, C. T. Pillinger
  1096

A reexamination of amino acids in lunar soil
K. L. F. Brinton, J. L. Bada, J. R. Arnold
  1097

The Spectral Effects of Subsolidus Reduction of Olivine and Pyroxene
D. T. Britt
  1098

The 1.2 to 3.5 microns observations of asteroid 4179 Toutatis
D. T. Britt, E. S. Howell, J. F. Bell, L. A. Lebofsky
  1099

Flexure and the role of inplane force around coronae on Venus
C. D. Brown, R. E. Grimm
  1100

Viscous relaxation of the Moho under large lunar basins
C. D. Brown, R. E. Grimm
  1101

Determining the relative extent of alteration in CM chondrites
L. B. Browning, H. Y. McSween Jr., M. Zolensky
  1102

Identification of cometary and asteroidal particles in stratospheric IDP collections
D. E. Brownlee, D. J. Joswiak, S. G. Love, A. O. Nier, D. J. Schlutter, J. P. Bradley
  1103

Quantifying the effect of rheology on plan-view shapes of lava flows
B. C. Bruno, G. J. Taylor, R. M. C. Lopes-Gautier
  1104

The EET87513 clast N: A CM2 fragment in an HED polymict breccia
P. C. Buchanan, M. E. Zolensky, A. M. Reid, R. A. Barrett
  1105

Can weak crust explain the correlation of geoid and topography on Venus?
W. R. Buck
  1106

Venus resurfacing rates: Constraints provided by 3-D Monte Carlo simulations
M. A. Bullock, D. H. Grinspoon, J. W. Head
  1107

Scalloped margin domes: What are the processes responsible and how do they operate?
M. H. Bulmer, J. E. Guest, G. Michaels, S. Saunders
  1108

Yana ring structure, North-Eastern Siberia: A possible counterpart of coronae on Venus
G. A. Burba
  1109

Russia's contribution to regional geologic mapping of Venus
G. A. Burba, N. N. Bobina, V. P. Shashkina
  1110

Landscape and geomorphic survey of Zhamanshin area, Northern Kazakhstan: Preliminary report on 1992 field trip data
G. G. Burba Jr., V. A. Meshcherskaya
  1111

How diverse is the asteroid belt?
T. H. Burbine, J. F. Bell
  1112

Studies of the release of radiogenic Xe-129 from Bjurboele: Evidence against simple diffusion models
M. K. Burkland, T. D. Swindle, S. L. Baldwin
  1113

A pattern recognition system for locating small volcanoes in Magellan SAR images of Venus
M. C. Burl, U. M. Fayyad, P. Smyth, J. C. Aubele, L. S. Crumpler
  1114

Sources of NA for the Io atmosphere
D. S. Burnett, S. B. Ellis, A. Rice, S. Epstein
  1115

Chemical weathering on Mars: Rate of oxidation of iron dissolved in brines
R. G. Burns
  1116

Venus mountain-top mineralogy: Misconceptions about pyrite as the high radar-reflecting phase
R. G. Burns, D. W. Straub
  1117

Buoyant subduction on Venus: Implications for subduction around coronae
J. D. Burt, J. W. Head
  1118

The origin of Venusian channels: Modelling of thermal erosion by lava
D. B. J. Bussey, S.-A. Sorensen, J. E. Guest
  1119

Volatiles in fourteen interplanetary dust particles: A comparison with CI and CM chondrites
R. Bustin, E. K. Gibson Jr., S. J. Wentworth
  1120

An ancient inner lake in Maadim Vallis
N. A. Cabrol, E. A. Grin, A. Dollfus, G. Dawidowicz
  1121

Spatial variation in the seasonal south polar CAP of Mars as observed by Mariner 7
W. M. Calvin, T. Z. Martin, G. B. Hansen
  1122

The giant impact produced a precipitated Moon
A. G. W. Cameron
  1123

Geology and surface characteristics of Bell Regio, Venus
B. A. Campbell, P. G. Rogers
  1124

Lava flows on Venus: Analysis of motion and cooling
B. A. Campbell, J. R. Zimbelman
  1125

Stratigraphy and sedimentology of the K/T boundary deposit in Haiti
S. Carey, H. Sigurdsson, S. Dhondt, J. M. Espindola
  1126

Galileo/NIMS near-infrared thermal imagery of the surface of Venus
R. W. Carlson, K. H. Baines, M. Girard, L. W. Kamp, P. Drossart, T. Encrenaz, F. W. Taylor
  1127

Preliminary report of lunar observations by the Near-Infrared Mapping Spectrometer (NIMS) during the second Galileo Earth-Moon encounter
R. W. Carlson, H. H. Kieffer, K. H. Baines, K. J. Becker, G. E. Danielson, K. Edwards, F. P. Fanale, J. Forsythe, L. R. Gaddis, J. C. Granahan
  1128

Distribution of vanadium and melting of opaque assemblages in Efremovka CAI's
I. Casanova, L. Grossman
  1129

Metal-rich meteorites from the aubrite parent body
I. Casanova, T. J. McCoy, K. Keil
  1130

Why convective heat transport in the solar nebula was inefficient
P. Cassen
  1131

Fault geometries and extension in the Valles Marineris, Mars
D. J. Chadwick, B. K. Lucchitta
  1132

A two-stage (turbulent-drainage) mechanism for the emplacement of impact crater outflows on Venus
D. J. Chadwick, G. G. Schaber
  1133

Oxygen Isotopes as Tracers of Tektite Source Rocks: an Example From the Ivory Coast Tektites and Lake Bosumtwi Crater
C. P. Chamberlain, J. D. Blum, C. Koeberl
  1134

Oxygen isotopes as tracers of tektite source rocks: an example from the Ivory Coast tektites and Lake Bosumtwi Crater
J. D. Blum, C. Koeberl, C. P. Chamberlain
  1135

Cratering on Gaspra
C. R. Chapman, G. Neukum, J. Veverka, M. Belton
  1136

Basal scarp, paleoglacier, and fissure flows of Elysium Mons, Mars
M. G. Chapman
  1137

Shock induced reaction in Chicxulub target materials (CaSO4 and SiO2) and their relation to extinctions
G. Chen, T. J. Ahrens
  1138

LEW88516 and SNC meteorites
J. H. Chen, G. J. Wasserburg
  1139

The Th and U abundances in chondritic meteorites
J. H. Chen, G. J. Wasserburg, D. A. Papanastassiou
  1140

Lunar Scout Two spacecraft gravity experiment
A. F. Cheng
  1141

Mission to the Moon: an ESA study on future exploration
A. F. Chicarro
  1142

Fractal dimensions of rampart impact craters on Mars
D. Ching, G. J. Taylor, P. Mouginis-Mark, B. C. Bruno
  1143

A simple model of clastic sediments on Mars
P. R. Christensen, M. C. Malin
  1144

Thermal-Infrared Emission Spectroscopy of Natural Surfaces: Application to Coated Surfaces
P. R. Christensen, S. T. Harrison, P. Barbera, S. Ruff
  1145

Collisions of small Spacewatch asteroids with the Earth
C. F. Chyba
  1146

Differential scaling: Implications for central structures in large lunar craters
M. J. Cintala, R. A. F. Grieve
  1147

Impact comminution of glasses: Implications for lunar regolith evolution
M. J. Cintala, S. Smith, F. Hoerz
  1148

Microtektite-like glass spherules in Late Devonian (367 MA) shales
P. Claeys, Jean-G. Casier
  1149

KT boundary impact glasses from the Gulf of Mexico region
P. Claeys, W. Alvarez, J. Smit, A. R. Hildebrand, A. Montanari
  1150

First results of the seven-color asteroid survey
B. E. Clark, J. F. Bell, F. P. Fanale, P. G. Lucey
  1151

Simulation of possible regolith optical alteration effects on carbonaceous chondrite meteorites
B. E. Clark, F. P. Fanale, M. S. Robinson
  1152

Spectral mixing models of S-Type asteroids
B. E. Clark, P. G. Lucey, J. F. Bell, F. P. Fanale
  1153

Remote sensing X ray fluorescence spectrometry for future lunar exploration missions
P. E. Clark, L. G. Evans, J. I. Trombka
  1154

Carbon and nitrogen in Type 2 supernova diamonds
D. D. Clayton, M. Eleid, L. E. Brown
  1155

Measurement of polycyclic aromatic hydrocarbon (PAHs) in interplanetary dust particles
S. J. Clemett, C. R. Maechling, R. N. Zare, P. D. Swan, R. M. Walker
  1156

Mars: The initial emplacement of ground ice in response to the thermal evolution of its early crust
S. M. Clifford
  1157

The role of the geothermal gradient in the emplacement and replenishment of ground ice on Mars
S. M. Clifford
  1158

The thermodynamic case for a water-rich Mars
S. M. Clifford
  1159

Olivine-rich asteroids, pallasitic olivine and olivine-metal mixtures: Comparisons of reflectance spectra
E. A. Cloutis
  1160

Remanent magnetism of HED meteorites: Implications for their evolution and ancient magnetic fields
D. W. Collinson, S. J. Morden
  1161

Graphite solubility and co-vesiculation in basalt-like melts at one-ATM
R. O. Colson
  1162

Crystal-chemistry and partitioning of REE in whitlockite
R. O. Colson, B. L. Jolliff
  1163

Power-Law Confusion: You Say Incremental, I Say Differential
J. E. Colwell
  1164

The experimental production of matrix lumps within chondrules: Evidence of post-formational processes
H. C. Connolly Jr., R. H. Hewins
  1165

Flash melting of chondrule precursors in excess of 1600 C. Series 1: Type 2 (B1) chondrule composition experiments
H. C. Connolly Jr., R. H. Hewins, G. E. Lofgren
  1166

Modelling Hypervelocity Impacts into Aluminum Structures Based on LDEF Data
C. R. Coombs, D. R. Atkinson, A. J. Watts, J. R. Wagner, M. K. Allbrooks, C. J. Hennessy
  1167

Using lunar sounder imagery to distinguish surface from subsurface reflectors in lunar highlands areas
B. L. Cooper, J. L. Carter
  1168

Geologic history of central Chryse Planitia and the Viking 1 landing site, Mars
R. A. Craddock, L. S. Crumpler, J. C. Aubele
  1169

Macroscopic electric charge separation during hypervelocity impacts: Potential implications for planetary paleomagnetism
D. A. Crawford, P. H. Schultz
  1170

Rhenium-osmium isotope systematics of Group 2A and Group 4A iron meteorites
R. A. Creaser, D. A. Papanastassiou, G. J. Wasserburg
  1171

Separation of spallation and terrestrial C-14 in chondrites
R. G. Cresswell, R. P. Beukens, J. C. Rucklidge
  1172

Near-infrared spectra of the Martian surface: Reading between the lines
D. Crisp, J. F. Bell III
  1173

Geomorphology of Triton's polar materials
S. K. Croft
  1174

Porosity and the ecology of icy satellites
S. K. Croft
  1175

Tectonics on Triton
S. K. Croft
  1176

Post-impact alteration of the Manson impact structure
L. J. Crossey, P. McCarville
  1177

Model of optical scatter from microimpacts on the Hubble Telescope
L. B. Crowell
  1178

Volcanism in southern Guinevere Planitia, Venus: Regional volcanic history and morphology of volcanic domes
D. A. Crown, E. R. Stofan, J. J. Plaut
  1179

Anomalous REE patterns in unequilibrated enstatite chondrites: Evidence and implications
G. Crozaz, W. Hsu
  1180

Comparison of the distribution of large magmatic centers on Earth, Venus, and Mars
L. S. Crumpler
  1181

The Magellan volcanic and magmatic feature catalog
L. S. Crumpler, J. C. Aubele, J. W. Head
  1182

Synthesis of global thematic mapping, Venus: Geologic correlations/questions for the Magellan gravity mission
L. S. Crumpler, J. C. Aubele, J. W. Head
  1183

Large volcanoes on Venus: Examples of geologic and structural characteristics from different classes
L. S. Crumpler, J. W. Head, J. C. Aubele
  1184

Regional mantle upwelling on Venus: The Beta-Atla-Themis anomaly and correlation with global tectonic patterns
L. S. Crumpler, J. W. Head, J. C. Aubele
  1185

The granulite suite: Impact melts and metamorphic breccias of the early lunar crust
J. A. Cushing, G. J. Taylor, M. D. Norman, K. Keil
  1186

Galileo EM-2 contributions to the lunar control network
M. E. Davies, T. R. Colvin, M. J. S. Belton, R. Greeley
  1187

Iron and nickel isotopic mass fractionation in deep-sea spherules
A. M. Davis, D. E. Brownlee
  1188

Trace element distributions in primitive achondrites
A. M. Davis, M. Prinz, M. K. Weisberg
  1189

Deviations from the straight line: Bumps (and grinds) in the collisionally evolved size distribution of asteroids
D. R. Davis, P. Farinella, P. Paolicchi, A. Campo Bagatin, A. Cellino, E. Zappala
  1190

Small volcanoes in Tempe Terra, Mars: Their detailed morphometry and inferred geologic significance
P. A. Davis, K. L. Tanaka
  1191

Shallow crustal discontinuities and graben and scarp formation in the Tharsis region of Mars
P. A. Davis, K. L. Tanaka, M. P. Golombek
  1192

Characteristics of arachnoids from Magellan data
C. B. Dawson, L. S. Crumpler
  1193

A method to determine asteroid poles
G. Deangelis
  1194

Cathodoluminescence properties of components in enstatite chondrites
J. M. Dehart, G. E. Lofgren
  1195

Classification of Martian deltas
R. A. Dehon
  1196

The Fe/Mn constraint on precursors of basaltic achondrites
J. S. Delaney, J. S. Boesenberg
  1197

Compositional heterogeneity within a dumbbell-shaped Apollo 15 green glass: Evidence for simultaneous eruption of different magmas
J. W. Delano
  1198

Oxidation state of the Earth's upper mantle during the last 3800 million years: Implications for the origin of life
J. W. Delano
  1199

Soret diffusion: A possible cause of compositional heterogeneity within tektites
J. W. Delano, Y.-G. Liu, R. A. Schmitt
  1200

Isotopic and trace element characteristics of an unusual refractory inclusion from Essebi
E. Deloule, A. K. Kennedy, I. D. Hutcheon, A. Elgoresy
  1201

Disk-resolved spectral characteristics of Saturn's medium-sized satellites
T. Denk, R. Jaumann, G. Neukum
  1202

The Correlation of Alkalis and Aluminum During High-Temperature Volatilization of Albite and Nepheline
Yu. P. Dikov, M. V. Gerasimov, O. I. Yakovlev, F. Wlotzka
  1203

A CM chondrite cluster and CM streams
R. T. Dodd, M. E. Lipschutz
  1204

Relation between ages and elevations of Martian channels
J. M. Dohm, D. H. Scott
  1205

Does the thermal wind exist near the Earth's core boundary?
A. Z. Dolginov
  1206

Magnetic fields and nonuniform structures of the Moon
A. Z. Dolginov
  1207

Polarity reversals and tilt of the Earth's magnetic dipole
A. Z. Dolginov
  1208

Are cosmic rays effective for ionization of the solar nebula?
A. Z. Dolginov, T. F. Stepinski
  1209

On the unique structure of the magnetic fields of Uranus and Neptune
Sh. Sh. Dolginov
  1210

Precession of Uranus and Neptune and their magnetic field
Sh. Sh. Dolginov
  1211

Dust in the Martian atmosphere: Polarimetric sensing
A. Dollfus, S. Ebisawa
  1212

Development of a molecular beam technique to study early solar system silicon reactions
Q. W. Dong, M. H. Thiemens
  1213

On high-temperature formation of iron-rich olivine in the early solar system
V. A. Dorofeyeva, A. B. Makalkin, A. V. Vityazev
  1214

Recondensation of chondritic material in the early solar system: Results of thermodynamic simulation
V. A. Dorofeyeva, A. B. Makalkin, M. V. Mironenko, A. V. Vityazev
  1215

Analytic expression for epithermal neutron spectra amplitudes as a function of water content
D. Drake
  1216

Noble gas evidence of an aqueous reservoir near the surface of Mars more recently than 1.3 GA
M. J. Drake, T. Owen, T. Swindle, D. Musselwhite
  1217

Exploration planning in the context of human exploration and development of the Moon
M. B. Duke, D. A. Morrison
  1218

Primordial lightning: Evidence preserved in chondrites
D. Eisenhour, P. R. Buseck
  1219

Micro-zoning in minerals of a Landes silicate inclusion
D. D. Eisenhour, P. R. Buseck, H. Palme, J. Zipfel
  1220

Solar wind-induced secondary ions and their relation to lunar surface composition
R. C. Elphic, H. O. Funsten III, R. L. Hervig
  1221

A new carbon-rich phase (COPS) in Antarctic micrometeorites
C. Engrand, M. Maurette, G. Kurat, F. Brandstatter, M. Perreau
  1222

Automatic definition of spectral units in the equatorial regions of Mars
S. Erard, P. Cerroni, A. Coradini
  1223

Composition of the Martian aerosols through near-IR spectroscopy
S. Erard, P. Cerroni, A. Coradini
  1224

Giant radiating dyke swarms on Earth and Venus
R. E. Ernst, J. W. Head, E. Parfitt, L. Wilson, E. Grosfils
  1225

Re-Os dating of 3AB iron meteorites
T. M. Esat, V. Bennett
  1226

Modelling of dispersal and deposition of impact glass spherules from the Cretaceous-Tertiary boundary deposit
J. M. Espindola, S. Carey, H. Sigurdsson
  1227

The Xe-Q in lodranites and a hint for Xe-L. FRO90011 another lodranite?
O. Eugster, A. Weigel
  1228

On the Origin of 4He and 40Ar in Natural Gold
O. Eugster, B. Hofmann, S. Niedermann, Ch. Thalmann
  1229

Projectile-target mixing in melted ejecta formed during a hypervelocity impact cratering event
N. J. Evans, T. J. Ahrens, M. Shahinpoor, W. W. Anderson
  1230

Moessbauer spectrometer for mineralogical analysis of the Mars surface: Moessbauer source considerations
E. N. Evlanov, V. A. Frolov, O. F. Prilutskii, G. V. Veselova, A. M. Rodin, G. Klingelhoefer
  1231

Vulcanian explosive eruptions: A mechanism for localised pyroclast dispersal on Venus
S. A. Fagents, L. Wilson
  1232

Chondrites, S asteroids, and space weathering: Thumping noises from the coffin?
F. P. Fanale, B. E. Clark
  1233

A comparison of the visible and near infrared reflectance of hydrovolcanic palagonite tuffs and Martian weathered soils
W. H. Farrand, R. B. Singer
  1234

The rate of chemical weathering of pyrite on the surface of Venus
B. Fegley Jr., K. Lodders
  1235

Terrestrial case studies of ilmenite exploration and lunar implications
S. C. Feldman, H. A. Franklin
  1236

Morphotectonics of Venus
V. J. Finn, V. R. Baker, A. Z. Dolginov
  1237

Transmantle flux tectonics
V. J. Finn, A. Z. Dolginov, V. R. Baker
  1238

Assimilation in lunar basalts and volcanic glasses: Implications for a heterogenous mantle source region
A. B. Finnila, P. C. Hess, M. J. Rutherford
  1239

Measuring and distinguishing compositional and maturity properties of lunar soils by remote VIS-NIR spectroscopy
E. M. Fischer, C. M. Pieters
  1240

Diamond thermoluminescence properties of different chondrites
A. V. Fisenko, L. L. Kashkarov, L. F. Semjonova, C. T. Pillinger
  1241

The unusual metallic particles in Krymka LL3.0 chondrite
A. V. Fisenko, A. Yu. Ljul, L. F. Semjonova, K. I. Ignatenko
  1242

On possibility of diamond formations in radiation process
A. V. Fisenko, L. F. Semjonova, L. N. Bolsheva, T. V. Grachjova, A. B. Verchovsky, Yu. A. Shukolyukov
  1243

The carbon isotopic composition of Novo Urei diamonds
A. V. Fisenko, L. F. Semjenova, A. B. Verchovsky, S. S. Russell, C. T. Pillinger
  1244

The Fractionation of Noble Gases in Diamonds of CV3 Efremovka Chondrite
A. V. Fisenko, A. B. Verchovsky, L. F. Semjonova, Yu. A. Shukolyukov
  1245

Cronstedtite and iron sulfide mineralogy of CM-type carbonaceous chondrites from cryogenic Moessbauer spectra
D. S. Fisher, R. G. Burns
  1246

NMR Spectroscopy of Experimentally Shocked Single Crystal Quartz: A Reexamination of the NMR Shock Barometer
P. S. Fiske, A. J. Gratz, W. J. Nellis
  1247

Organic matter on the early surface of Mars: an assessment of the contribution by interplanetary dust
G. J. Flynn
  1248

Trace element content of chondritic cosmic dust: Volatile enrichments, thermal alterations, and the possibility of contamination
G. J. Flynn, S. R. Sutton, S. Bajt
  1249

Depletions of sulfur and/or zinc in IDPs: Are they reliable indicators of atmospheric entry heating?
G. J. Flynn, S. R. Sutton, S. Bajt, W. Kloeck, K. L. Thomas, L. P. Keller
  1250

New low-Ni (igneous?) particles among the C and C? types of cosmic dust
G. J. Flynn, S. R. Sutton, S. Bajt, W. Kloeck
  1251

Mass and spatial distribution of carbonaceous component in Comet Halley
M. Fomenkova, S. Chang
  1252

Primitive SNC parent magmas and crystallization: Low PH2O experiments
D. J. Ford, M. J. Rutherford
  1253

Phase transitions and 2D spherical convection in a large icy satellite
O. Forni, C. Federico, A. Coradini
  1254

Planetary Science and Astronomy in the Middle School Classroom
L. M. French
  1255

Do large impact basins in the southern hemisphere of Mars control the distribution of polar structures and deposits?
H. Frey, Anne-M. Reidy
  1256

Free-air and Bouguer gravity anomalies and the Martian crustal dichotomy
H. Frey, B. G. Bills, W. S. Kiefer, R. S. Nerem, J. H. Roark, M. T. Zuber
  1257

New Mars free-air and Bouguer gravity: Correlation with topography, geology and large impact basins
H. Frey, B. G. Bills, W. S. Kiefer, R. S. Nerem, J. H. Roark, M. T. Zuber
  1258

Spectral evidence of size dependent space weathering processes on asteroid surfaces
M. J. Gaffey, J. F. Bell, R. H. Brown, T. H. Burbine, J. L. Piatek, K. L. Reed, D. A. Chaky
  1259

The Fe2(+)-Mg interdiffusion in orthopyroxene: Constraints from cation ordering and structural data and implications for cooling rates of meteorites
J. Ganguly, V. Tazzoli
  1260

Cation ordering in orthopyroxenes and cooling rates of meteorites: Low temperature cooling rates of Estherville, Bondoc and Shaw
J. Ganguly, H. Yang, S. Ghose
  1261

The SCR Ne-21 and Ar-38 in lunar rock 68815: The solar proton energy spectrum over the past 2 MYR
D. H. Garrison, M. N. Rao, D. D. Bogard
  1262

Morphometric comparison of Icelandic lava shield volcanoes versus selected Venusian edifices
J. B. Garvin, R. S. Williams Jr.
  1263

A mineralized zone in Western Candor Chasma, Mars
P. E. Geissler, R. B. Singer, G. Komatsu
  1264

Trapping of water vapor from an atmosphere by condensed silicate matter formed by high-temperature pulse vaporization
M. V. Gerasimov, Yu. P. Dikov, O. I. Yakovlev, F. Wlotzka
  1265

Pargo Chasma and its relationship to global tectonics
R. C. Ghail
  1266

First oxygen from lunar basalt
M. A. Gibson, C. W. Knudsen, D. J. Brueneman, H. Kanamori, R. O. Ness, L. L. Sharp, D. W. Brekke, C. C. Allen, R. V. Morris, L. P. Keller
  1267

The formation and evolution of Alpha and Tellus tesserae on Venus
M. S. Gilmore, J. W. Head
  1268

Extraction and isotopic analysis of medium molecular weight hydrocarbons from Murchison using supercritical carbon dioxide
I. Gilmour, C. Pillinger
  1269

EUVE observations of the Moon
G. R. Gladstone, J. S. McDonald, W. T. Boyd
  1270

Cretaceous-tertiary boundary spherules and Cenozoic microtektites: Similarities and differences
B. P. Glass, B. F. Bohor, W. J. Betterton
  1271

A test of the applicability of independent scattering to high albedo planetary regoliths
J. D. Goguen
  1272

Rheology of Water and Ammonia-Water Ices
D. L. Goldsby, D. L. Kohlstedt, W. B. Durham
  1273

Importance of expansion and contraction in the formation of tectonic features on the Moon
M. P. Golombek, W. B. Banerdt
  1274

Stalking the LREE-enriched component in ureilites
C. A. Goodrich, G. W. Lugmair
  1275

Grosnaja ABCs: Magnesium isotope compositions
J. N. Goswami, G. Srinivasan, A. A. Ulyanov
  1276

EUROMET Ureilite Consortium: A preliminary report on carbon and nitrogen geochemistry
M. M. Grady, C. T. Pillinger
  1277

Nitrates in SNCs: Implications for the nitrogen cycle on Mars
M. M. Grady, I. P. Wright, I. A. Franchi, C. T. Pillinger
  1278

A calibration of the production rate ratio P-21/P-26 by low energy secondry neutrons: Identification of Ne spallation components at the 10(exp 6) atoms/g level in terrestrial samples
Th. Graf, S. Niedermann, K. Marti
  1279

New K type asteroids
J. C. Granahan, G. Smith, J. F. Bell
  1280

Martian crater degradation by eolian processes: Analogy with the Rio Cuarto Crater Field, Argentina
J. A. Grant, P. H. Schultz
  1281

Rover Mounted Ground Penetrating Radar as a Tool for Investigating the Near-Surface of Mars and Beyond
J. A. Grant, P. H. Schultz
  1282

Sand transport on Mars: Preliminary results from models
R. Greeley, F. S. Anderson, D. Blumberg, E. Lo, P. Xu, J. Pollack
  1283

Galileo imaging results from the second Earth-Moon flyby: Lunar Maria and related units
R. Greeley, M. J. S. Belton, J. W. Head, A. S. McEwen, C. M. Pieters, G. Neukum, T. L. Becker, E. M. Fischer, S. D. Kadel, M. S. Robinson
  1284

Mars Analog Site Study (MASS)
R. Greeley, R. Kuzmin, F. Costard, F. S. Anderson, M. A. Geringer, R. Landheim, M. L. Wenrich
  1285

Earth imaging results from Galileo's second encounter
R. Greenberg, M. Belton, E. Dejong, A. Ingersoll, K. Klaasen, P. Geissler, J. Moersch, W. R. Thompson
  1286

Collisional and dynamical history of Gaspra
R. Greenberg, M. C. Nolan, W. F. Bottke Jr., R. A. Kolvoord
  1287

Petrography, mineralogy, and Mg isotope composition of VICTA: A vigarano CaAl4O7-bearing type A inclusion
R. C. Greenwood, A. Morse, J. V. P. Long
  1288

Explosive mafic volcanism on Earth and Mars
T. K. P. Gregg, S. N. Williams
  1289

Heliocentric zoning of the asteroid belt by aluminum-26 heating
R. E. Grimm, H. Y. McSween Jr.
  1290

Evolutionary implications of a steady-state water abundance on Venus
D. H. Grinspoon
  1291

Spatially extensive uniform stress fields on Venus inferred from radial dike swarm geometries: The Aphrodite Terra example
E. B. Grosfils, J. W. Head
  1292

Petrologic constraints on the surface processes on asteroid 4 Vesta and on excavation depths of diogenite fragments
T. L. Grove
  1293

The Planetary Data System Educational CD-ROM
E. A. Guinness, R. E. Arvidson, M. Martin, S. Dueck
  1294

Fluvial erosion on Mars: Implications for paleoclimatic change
V. C. Gulick, V. R. Baker
  1295

The Acraman impact structure: Estimation of the diameter by the ejecta layer thickness
E. P. Gurov
  1296

The Karakul depression in Pamirs: The first impact structure in Central Asia
E. P. Gurov, H. P. Gurova, R. B. Rakitskaya, A. Yu. Yamnichenko
  1297

Systematic chemical variations in large 3AB iron meteorites: Clues to core crystallization
H. Haack, E. R. D. Scott, G. S. Rubio, D. F. Gutierrez, C. F. Lewis, J. T. Wasson, R. R. Brooks, X. Guo, D. E. Ryan, J. Holzbecher
  1298

Assimilation of solids during ascent of magmas from the Bartoy Field of the Baikal Region, Siberia
J. R. Haas, L. A. Haskin, J. Luhr, S. Rasskazov
  1299

Morphology and models for the evolution of eastern Hecate Chasma, Venus
V. E. Hamilton, E. R. Stofan
  1300

A Pluto thermal model
C. J. Hansen, D. A. Paige
  1301

Modeling the reflectance of CO2 frost with new optical constants: Application to Martian south polar CAP spectra
G. B. Hansen, T. Z. Martin
  1302

Ishtar deformed belts: Evidence for deformation from below?
V. L. Hansen, R. J. Phillips
  1303

Why is the Moon dark?
B. Hapke
  1304

Nd-142/Nd-144 in bulk planetary reservoirs, the problem of incomplete mixing of interstellar components and significance of very high precision Nd-145/Nd-144 measurements
C. L. Harper Jr., S. B. Jacobsen
  1305

The physical mechanism of comet outbursts: an experiment
W. K. Hartmann
  1306

Confirmation of saturation equilibrium conditions in crater populations
W. K. Hartmann, R. W. Gaskell
  1307

Corvid meteoroids and a Giordano Bruno ray are genetically related
J. B. Hartung
  1308

Pyroxene equilibration temperatures in metamorphosed ordinary chondrites
R. P. Harvey, M. L. Bennett, H. Y. McSween Jr.
  1309

Remote sensing studies of the northeastern portion of the lunar nearside
B. R. Hawke, D. T. Blewett, P. G. Lucey, G. J. Taylor, C. A. Peterson, J. F. Bell, M. S. Robinson, J. F. Bell III, C. R. Coombs, R. Jaumann
  1310

Tessera terrain on Venus: Implications of tessera flooding models and boundary characteristics for global distribution and mode of formation
J. W. Head, M. Ivanov
  1311

Mode of emplacement of lunar mare volcanic deposits: Graben formation due to near surface deformation accompanying dike emplacement at Rima Parry 5
J. W. Head, L. Wilson
  1312

Lunar impact basins: New data for the nearside northern high latitudes and eastern limb from the second Galileo flyby
J. W. Head, M. Belton, R. Greeley, C. Pieters, E. Fischer, J. Sunshine, K. Klaasen, A. McEwen, T. Becker, G. Neukum
  1313

Lunar scout missions: Galileo encounter results and application to scientific problems and exploration requirements
J. W. Head, M. Belton, R. Greeley, C. Pieters, A. McEwen, G. Neukum, T. McCord
  1314

Lava flow-field morphological classification and interpretation: Examples from Venus
J. W. Head, K. M. Roberts, L. Wilson, H. Pinkerton
  1315

Modes of formation of lunar light plains and the detection of cryptomaria deposits
J. W. Head, J. Mustard, I. Antonenko, B. R. Hawke
  1316

Chemical differentiation, thermal evolution, and catastrophic overturn on Venus: Predictions and geologic observations
J. W. Head, E. M. Parmentier, P. C. Hess
  1317

A Moessbauer spectrometer for the mineralogical analysis of the Mars surface: First temperature dependent tests of the detector and drive system
P. Held, R. Teucher, G. Klingelhoefer, J. Foh, H. Jaeger, E. Kankeleit
  1318

Galileo photometry of Apollo landing sites
P. Helfenstein, J. Veverka, J. W. Head, C. Pieters, S. Pratt, J. Mustard, K. Klaasen, G. Neukum, H. Hoffmann, R. Jaumann
  1319

Emplacement of multiple flow units on very shallow slopes, east Kawelu Planitia flow field, Venus
M. B. Helgerud, J. R. Zimbelman
  1320

Near-surface temperature gradients and their effects on thermal-infrared emission spectra of particulate planetary surfaces
B. G. Henderson, B. M. Jakosky
  1321

Bubble coalescence in magmas
R. A. Herd, H. Pinkerton
  1322

Thermal inertia and radar reflectivity of the Martian north polar ERG: Low-density aggregates
K. E. Herkenhoff
  1323

The three ages of Venus: A hypothesis based on the cratering record
R. R. Herrick
  1324

Al-26-Mg-26 ages of iron meteorites
G. F. Herzog, A. E. Souzis, S. Xue, J. Klein, D. Juenemann, R. Middleton
  1325

The Ilmenite Liquidus and Depths of Segregation for High-Ti Picrite Glasses
P. C. Hess
  1326

Overturn of magma ocean ilmenite cumulate layer: Implications for lunar magmatic evolution and formation of a lunar core
P. C. Hess, E. M. Parmentier
  1327

Geochemistry and Cosmochemistry of Fullerenes III: Reaction of C60 and C70 with Ozone
D. Heymann, L. P. F. Chibante
  1328

Earth-based and Galileo SSI multispectral observations of eastern mare serenitatis and the Apollo 17 landing site
H. Hiesinger, R. Jaumann, G. Neukum
  1329

Trace-element composition of Chicxulub crater melt rock, K/T tektites and Yucatan basement
A. R. Hildebrand, D. C. Gregoire, M. Attrep Jr., P. Claeys, C. M. Thompson, W. V. Boynton
  1330

Comparison of reflectance spectra of C asteroids and unique C chondrites Y86720, Y82162, and B7904
T. Hiroi, C. M. Pieters, M. E. Zolensky
  1331

Phase Equilibria of the Magnesium Sulfate-Water System to 4 kbars
D. L. Hogenboom, J. S. Kargel, J. P. Ganasan, L. Lee
  1332

Experimental constraints on CO2 and H2O in the Martian mantle and primary magmas
J. R. Holloway, K. J. Domanik, P. A. Cocheo
  1333

The size of complex craters
K. A. Holsapple
  1334

Siderophile elements in the upper mantle of the Earth: New clues from metal-silicate partition coefficients
A. Holzheid, A. Borisov, H. Palme
  1335

Gas-grain energy transfer in solar nebula shock waves: Implications for the origin of chondrules
L. L. Hood, M. Horanyi
  1336

Mass of Saturn's A ring
L. J. Horn, C. T. Russell
  1337

Impact Penetration Experiments in Teflon Targets of Variable Thickness
F. Hörz, M. J. Cintala, R. P. Bernhard, T. H. See
  1338

Simulation of Collisional Fragmentation with Explosives
K. Housen
  1339

Olivines in the Kaba carbonaceous chondrite and constraints on their formation
X. Hua, P. R. Buseck
  1340

Removal of Carbonaceous Contaminants from Silica Aerogel
H.-P. Huang, I. Gilmour, C. T. Pillinger, M. E. Zolensky
  1341

The group A3 chondrules of Krymka: Further evidence for major evaporative loss during the formation of chondrules
S. Huang, P. H. Benoit, D. W. G. Sears
  1342

Petrologic models of 15388, a unique Apollo 15 mare basalt
S. S. Hughes, E. J. Dasch, L. E. Nyquist
  1343

Potassium Isotope Cosmochemistry, Volatile Depletion and the Origin of the Earth
M. Humayun, R. N. Clayton
  1344

Do SiC grains in Orgueil differ from those in Murchison?
G. R. Huss, I. D. Hutcheon, G. J. Wasserburg
  1345

The depths of the largest impact craters on Venus
B. A. Ivanov, P. G. Ford
  1346

Tessera terrain on Venus: Global characterization from Magellan data
M. Ivanov, J. W. Head
  1347

Density of impact craters on tessera, Venus
M. A. Ivanov, A. T. Basilevsky
  1348

First Investigation of Noble Gases in the Dengli H3,8 Chondrite
M. A. Ivanova, S. S. Assonov, Yu. A. Shukolyukov
  1349

Silica-bearing objects in the Dengli H3.8 and Gorlovka H3-4 chondrites
M. A. Ivanova, N. N. Kononkova, M. I. Petaev
  1350

Induced Thermoluminescence Study of Experimentally Shock-Loaded Oligoclase
A. I. Ivliev, L. L. Kashkarov, D. D. Badjukov
  1351

Shock-Thermal History of Kapoeta Howardite Matter on Data of Thermoluminescence Analysis of Individual Mineral Grains
A. I. Ivliev, L. L. Kashkarov, Yu. Yu. Korotkova
  1352

A first-order model for impact crater degradation on Venus
N. R. Izenberg, R. E. Arvidson, R. J. Phillips
  1353

A discontinuous melt sheet in the Manson impact structure
G. A. Izett, R. L. Reynolds, J. G. Rosenbaum, J. M. Nishi
  1354

Orbital evolution of dust from comet Schwassmann-Wachmann 1: A case of one-to-one resonance trapping
A. A. Jackson, H. A. Zook
  1355

Constraints on the differentiation of the Earth from the coupled Sm-146,147-Nd-142,143 systematics
S. B. Jacobsen, C. L. Harper Jr.
  1356

OS isotopes in SNC meteorites and their implications to the early evolution of Mars and Earth
E. Jagoutz, J. M. Luck, D. Ben Othman, H. Wanke
  1357

Transition Metals in Superheat Melts
P. Jakes, M.-P. Wolfbauer
  1358

Iron oxide bands in the visible and near-infrared reflectance spectra of primitive asteroids
K. S. Jarvis, F. Vilas, M. J. Gaffey
  1359

Searching for neuKREEP: an EMP study of Apollo 11 Group A basalts
E. A. Jerde, L. A. Taylor
  1360

On the composition of neuKREEP: QMD contamination at Apollo 11?
E. A. Jerde, G. A. Snyder, L. A. Taylor
  1361

Estimates of lithospheric thickness on Venus
C. L. Johnson, D. T. Sandwell
  1362

Radar properties of several fluidized ejecta blankets on Venus
J. R. Johnson, V. R. Baker
  1363

A Monazite-bearing clast in Apollo 17 melt breccia
B. L. Jolliff
  1364

Apollo 17 materials viewed from 2 to 4 MM soil particles: Pre-serenitatis highlands components
B. L. Jolliff, K. M. Bishop
  1365

An iridium-rich iron micrometeorite with silicate inclusions from the Moon
B. L. Jolliff, R. L. Korotev, L. A. Haskin
  1366

The cooling rates of pahoehoe flows: The importance of lava porosity
A. C. Jones
  1367

Partitioning of Nb, Mo, Ba, Ce, Pb, Th and U Between Immiscible Carbonate and Silicate Liquids: Evaluating the Effects of P2O5, F, and Carbonate Composition
J. H. Jones, D. Walker
  1368

Complex zoning behavior in pyroxene in FeO-rich chondrules in the Semarkona ordinary chondrite
R. H. Jones, J. J. Papike
  1369

Angrite LEW87051: Are the olivines pheno's or xeno's? A continuing story
A. J. G. Jurewicz, G. A. McKay
  1370

Partial melting of ordinary chondrites: Lost City (H) and St. Severin (LL)
A. J. G. Jurewicz, J. H. Jones, E. T. Weber, D. W. Mittlefehldt
  1371

Experimental Partitioning of Zr, Ti, and Nb Between Silicate Liquid and a Complex Noble Metal Alloy and the Partitioning of TI Between Perovskite and Platinum Metal
S. R. Jurewicz, J. H. Jones
  1372

Experimental segregation of iron-nickel metal, iron-sulfide, and olivine in a thermal gradient: Preliminary results
S. R. Jurewicz, J. H. Jones
  1373

The history of mare volcanism in the Orientale Basin: Mare deposit ages, compositions and morphologies
S. D. Kadel, R. Greeley, G. Neukum, R. Wagner
  1374

The AL Rais meteorite: A CR chondrite or close relative?
G. W. Kallemeyn
  1375

Chemical and isotopic compositions in acid residues from various meteorites
N. Kano, K. Yamakoshi, H. Matsuzaki, K. Nogami
  1376

Crustal structure and igneous processes in a chondritic Io
J. S. Kargel
  1377

Geomorphic processes in the Argyre-Dorsa Argentea region of Mars
J. S. Kargel
  1378

The rheology and composition of cryovolcanic flows on icy satellites
J. S. Kargel
  1379

Martian carbon dioxide: Clues from isotopes in SNC meteorites
H. R. Karlsson, R. N. Clayton, T. K. Mayeda, A. J. T. Jull, E. K. Gibson Jr.
  1380

Different radiation and metamorphic history of the Kainsaz CO 3.2 chondrules
L. L. Kashkarov, G. V. Kalinina
  1381

Complex radiation-thermal history of Kaidun meteorite on data of track study of silicate minerals
L. L. Kashkarov, N. N. Korotkova, A. Ya. Skripnik
  1382

Fractal geometry of some Martian lava flow margins: Alba Patera
K. Kauhanen
  1383

Tectonics of Neyterkob corona on Venus
K. Kauhanen
  1384

Implications of crater distributions on Venus
W. M. Kaula
  1385

Megaplumes on Venus
W. M. Kaula
  1386

Preliminary analysis of Dione Regio, Venus: The final Magellan regional imaging gap
S. T. Keddie
  1387

The distribution of large volcanoes on Venus as a function of height and altitude
S. T. Keddie, J. W. Head
  1388

Structural mapping of Maxwell Montes
M. Keep, V. L. Hansen
  1389

I-Xe structure of ILAFEGH 009 and shallowater: Evidence for early formation and rapid cooling of impact-derived enstatite meteorites
K. Kehm, R. H. Nichols Jr., C. M. Hohenberg, T. J. McCoy, K. Keil
  1390

Explosive volcanism and the compositions of the cores of differentiated asteroids
K. Keil, L. Wilson
  1391

High-resolution seismic reflection survey at the Manson crater, Iowa
D. A. Keiswetter, R. Black, D. W. Steeples, R. R. Anderson
  1392

Heterogeneous plagioclase compositions in the Maralinga CK4 chondrite
L. P. Keller
  1393

Carbon abundances, major element chemistry, and mineralogy of hydrated interplanetary dust particles
L. P. Keller, K. L. Thomas, D. S. McKay
  1394

An initial perspective of S-asteroid subtypes within asteroid families
M. S. Kelley, M. J. Gaffey
  1395

Tidal interaction: A possible explanation for geysers and other fluid phenomena in the Neptune-Triton system
W. D. Kelly, C. L. Wood
  1396

International testing of a Mars rover prototype
A. L. Kemurjian, V. Linkin, L. Friedman
  1397

An Experimental Study of Trace Element Partitioning Between Perovskite, Hibonite and Melt: Equilibrium Values
A. E. Kennedy, G. E. Lofgren, G. J. Wasserburg
  1398

Nitrogen Isotopic Signatures in Agglutinates from Breccia 79035
J. F. Kerridge, Y. Kim, J. S. Kim, K. Marti
  1399

An inversion of geoid and topography for mantle and crustal structure on Mars
W. Kiefer, B. Bills, H. Frey, S. Nerem, J. Roark, M. Zuber
  1400

Lava crusts and flow dynamics
C. R. J. Kilburn
  1401

Isotopic signatures and distribution of nitrogen and trapped and radiogenic xenon in the Acapulco and FRO90011 meteorites
Y. Kim, K. Marti
  1402

Separation of Topographic and Intrinsic Backscatter Variations in Biscopic Radar Images: A "Magic Airbrush"
R. L. Kirk
  1403

Global Magellan-image map of Venus at full resolution
R. L. Kirk, K. B. Edwards, H. F. Morgan, L. A. Soderblom, T. L. Stoewe
  1404

The cartography of Venus with Magellan data
R. L. Kirk, H. F. Morgan, J. F. Russell
  1405

Osmium isotopes in Ivory Coast tektites: Confirmation of a meteoritic component and rhenium depletion
C. Koeberl, S. B. Shirey
  1406

Manson impact structure, Iowa: First geochemical results for drill core M-1
C. Koeberl, R. R. Anderson, J. B. Hartung, W. U. Reimold
  1407

Age determinations and Earth-based multispectral observations of lunar light plains
U. Koehler, R. Jaumann, G. Neukum
  1408

Meander properties of Venusian channels
G. Komatsu, V. R. Baker
  1409

Terrestrial Bitumen Analogue of Orgueil Organic Material Demonstrates High Sensitivity to Usual HF-HCI Treatment
A. V. Korochantsev, O. V. Nikolaeva
  1410

Composition of Apollo 17 core 76001
R. L. Korotev, K. M. Bishop
  1411

Composition and maturity of the 60013/14 core
R. L. Korotev, R. V. Morris, H. V. Lauer Jr.
  1412

Cat Mountain: A meteoritic sample of an impact-melted chondritic asteroid
D. A. Kring
  1413

Comparative magnetic and thermoanalytical study of two enstatite chondrites: Adhi Kot and Atlanta
E. Krol, B. Lang
  1414

Chromite-rich mafic silicate chondrules in ordinary chondrites: Formation by impact melting
A. N. Krot, A. E. Rubin
  1415

Evaporation kinetics of Mg2SiO4 crystals and melts from molecular dynamics simulations
J. D. Kubicki, E. M. Stolper
  1416

Spectral study of Venus global topography and geoid from Magellan and PVO data
A. B. Kucinskas, N. J. Borderies, D. L. Turcotte
  1417

Vertical structure models of the 1990 equatorial disturbance on Saturn
D. M. Kuehn, C. D. Barnet, R. F. Beebe
  1418

Preliminary Ar-40/Ar-39 age spectrum and laser probe dating of the M1 core of the Manson Impact Structure, Iowa: A K-T boundary crater candidate
M. J. Kunk, L. W. Snee, B. M. French, S. S. Harlan, J. J. McGee
  1419

Was Martian mantle wet? A possible consequence of rapid core formation
K. Kuramoto, T. Matsui
  1420

Water in Earth's mantle: Hydrogen analysis of mantle olivine, pyroxenes and garnet using the SIMS
M. Kurosawa, H. Yurimoto, S. Sueno
  1421

Lunar LIGO: A new concept in gravitational wave astronomy
N. Lafave, T. L. Wilson
  1422

Sheet flow fields on Venus
M. G. Lancaster, J. E. Guest, K. M. Roberts
  1423

Mars exobiology landing sites for future exploration
R. Landheim, R. Greeley, D. Desmarais, J. D. Farmer, H. Klein
  1424

Far-Infrared Spectra of CO2 Clathrate Hydrate Frosts
J. C. Landry, A. W. England
  1425

Orientation of Planar Deformation Features (PDFs) in quartz
F. Langenhorst, A. Deutsch
  1426

Lunar phase function effects on spectral ratios used for resource assessment
S. M. Larson, J. Collins, R. B. Singer, J. R. Johnson, D. E. Melendrez
  1427

The astrophysical interpretation of isotope anomalies in graphite and SiC grains of chondrites
A. K. Lavrukhina
  1428

On possible Mn-53 heterogeneity in the early solar system
A. K. Lavrukhina, G. K. Ustinova
  1429

On origin of the olivine inclusions from the Kainsaz CO carbonaceous chondrite
A. K. Lavrukhina, Z. A. Lavrentjeva, A. Yu. Ljul, K. I. Ignatenko
  1430

Teaching Planetary Sciences to Elementary School Teachers: Programs that Work
L. A. Lebofsky, N. R. Lebofsky
  1431

A simultaneous estimation of the mass of Mars and its natural satellites, PHOBOS and Deimos, from the orbital perturbations on the Mariner 9, Viking 1, and Viking 2 orbiters
F. G. Lemoine, D. E. Smith, S. K. Fricke, J. J. McCarthy
  1432

Models of thermal/chemical boundary layer convection: Potential application to Venus
A. Lenardic, W. M. Kaula
  1433

On the relationship between tectonic plates and thermal mantle plume morphology
A. Lenardic, W. M. Kaula
  1434

Hellas basin, Mars: Formation by oblique impact
G. J. Leonard, K. L. Tanaka
  1435

Mapping the stability region of the 3:2 Neptune-Pluto resonance
H. F. Levison, S. A. Stern
  1436

Possible dust contamination of the early solar system
E. H. Levy, T. V. Ruzmaikina
  1437

A Search for Noble-Gas Evidence for Presolar Oxide Grains
R. S. Lewis, B. Srinivasan
  1438

The seismic response of an aquifer to the propagation of an impact generated shock wave: A possible trigger of the Martian outflow channels?
I. A. Leyva, S. M. Clifford
  1439

INAA of CAIs from the Maralinga CK4 chondrite: Effects of parent body thermal metamorphism
D. J. Lindstrom, L. P. Keller, R. R. Martinez
  1440

Spaceship Earth: A Partnership in Curriculum Writing
M. M. Lindstrom, The NASA Partners-In-Space Team
  1441

Chondritic ratios of Fe/Cr/Ir in Kerguelen Plateau (Hole 738C) K/T carbonate-rich sediments support asteroid-cometary impact at K/T time
Y. G. Liu, R. A. Schmitt
  1442

Earth's partial pressure of CO2 over the past 120 Ma; evidence from Ce anomalies in the deep (greater than 600 m) Pacific Ocean, 1
Y.-G. Liu, R. A. Schmitt
  1443

Geochemical evidences for two chondritic-like cometary or asteroidal impacts before and at the K/T boundary
Y.-G. Liu, R. A. Schmitt
  1444

Earth's partial pressure of CO2 over the past 100-500 Ma; evidence from Ce anomalies in mostly shallow seas (less than 200 m) as recorded in carbonate sediments, 2
Y.-G. Liu, J. W. Reinhardt, R. A. Schmitt
  1445

Noble gases in twenty Yamato H-chondrites: Comparison with Allan Hills chondrites and modern falls
Th. Loeken, P. Scherer, L. Schultz
  1446

The First Lunar Outpost: The Design Reference Mission and a New ERA in Lunar Science
G. E. Lofgren
  1447

Experimentally reproduced RELICT enstatite in porphyritic chondrules of enstatite chondrite composition
G. E. Lofgren, J. M. Dehart, T. L. Dickinson
  1448

Liquidus equilibria of lunar analogs at high pressure
J. Longhi
  1449

The monzonorite-anorthosite connection: The petrogenesis of terrestrial KREEP
J. Longhi, J. V. Auwera
  1450

Martian lavas: Three complementary remote sensing techniques to derive flow properties
R. Lopes-Gautier, B. C. Bruno, G. J. Taylor, S. Rowland, C. R. J. Kilburn
  1451

Densities of 5-15 micron interplanetary dust particles
S. G. Love, D. J. Joswiak, D. E. Brownlee
  1452

Resolving topographic detail on Venus by modeling complex Magellan altimetry echoes
A. J. Lovell, F. P. Schloerb, G. E. McGill
  1453

Sedimentation, volcanism, and ancestral lakes in the Valles Marineris: Clues from topography
B. K. Lucchitta, N. K. Isbell, A. Howington-Kraus
  1454

The Clementine Instrument Complement
P. G. Lucey
  1455

Mixing model analysis of telescopic lunar spectra
P. G. Lucey, B. C. Clark, B. R. Hawke
  1456

First Results from a Laboratory Facility for Measurement of Emission Spectra Under Simulated Planetary Conditions
P. G. Lucey, N. Domergue-Schmidt, B. G. Henderson, B. Jakosky
  1457

Evolution of Triton's volatile budget
J. I. Lunine
  1458

The Effect of an On-Orbit Near Encounter on the Number Flux Density of Micron Sized Particles
C. R. Maag, W. G. Tanner, T. J. Stevenson, J. Borg, J.-P. Bibring, W. M. Alexander, A. J. Maag
  1459

Suggestion for extended Viking magnetic properties experiment on future Mars missions
M. B. Madsen, J. M. Knudsen, L. Vistisen, R. B. Hargraves
  1460

Large-scale volcanism associated with coronae on Venus
K. M. Roberts, J. W. Head
  1461

Possible sources of H2 to H2O enrichment at evaporation of parent chondritic material
A. B. Makalkin, V. A. Dorofeyeva, A. V. Vityazev
  1462

Tidal regime of intact planetoid capture model for the Earth-Moon system: Does it relate to the archean sedimentary rock record?
R. J. Malcuit, R. R. Winters
  1463

On the delivery of planetesimals to a protoplanet in the solar nebula
R. Malhotra
  1464

Tectonic resurfacing of Venus
M. C. Malin, R. E. Grimm, R. R. Herrick
  1465

Venusian pancake domes: Insights from terrestrial voluminous silicic lavas and thermal modeling
C. R. Manley
  1466

Geophysical models of Western Aphrodite-Niobe region: Venus
K. I. Marchenkov, R. S. Saunders, W. B. Banerdt
  1467

CO2-Production by Impact in Carbonates?: an ATEM and Stable Isotope(C,O) Study
I. Martinez, P. Agrinier, F. Guyot, Ph. Ildefonse, M. Javoy, U. Schärer, U. Hornemann, A. Deutsch
  1468

Dust grain resonant capture: A statistical study
F. Marzari, V. Vanzani, S. J. Weidenschilling
  1469

Effects of bulk composition on production rates of cosmogenic nuclides in meteorites
J. Masarik, R. C. Reedy
  1470

A decade's overview of Io's volcanic activity
D. L. Matson, G. J. Veeder, T. V. Johnson, D. L. Blaney, J. D. Goguen
  1471

A mission concept of Phobos/Deimos exploration
K. Matsushima, J. Saito, M. Utashima, H. Koshiishi
  1472

Size distribution of interplanetary iron and stony particles related with deep-sea spherules
H. Matsuzaki, K. Yamakoshi
  1473

Classificational parameters for acapulcoites and lodranites: The cases of FRO 90011, EET 84302 and ALH A81187/84190
T. J. McCoy, K. Keil, R. N. Clayton, T. K. Mayeda
  1474

The dregs of crystallization in Zagami
T. J. McCoy, K. Keil, G. J. Taylor
  1475

Resolving LDEF's flux distribution: Orbital (debris?) and natural meteoroid populations
J. A. M. McDonnell
  1476

Clementine: Anticipated scientific datasets from the Moon and Geographos
A. S. McEwen
  1477

Global and regional/seasonal color mosaics of Mars
A. S. McEwen, L. A. Soderblom
  1478

Lunar multispectral mosaics from Galileo's second Earth-Moon flyby
A. S. McEwen, T. L. Becker, M. S. Robinson, K. P. Klaasen, C. Heffernan, J. M. Sunshine
  1479

Galileo SSI lunar observations: Copernican craters and soils
A. S. McEwen, R. Greeley, J. W. Head, C. M. Pieters, E. M. Fischer, T. V. Johnson, G. Neukum
  1480

Aspects of modelling the tectonics of large volcanoes on the terrestrial planets
P. J. McGovern, S. C. Solomon
  1481

Grain surface features of Apollo 17 orange and black glass
D. S. McKay, S. J. Wentworth
  1482

JSC-1: A new lunar regolith simulant
D. S. McKay, J. L. Carter, W. W. Boles, C. C. Allen, J. H. Allton
  1483

The Nakhla parent melt: REE partition coefficients and clues to major element composition
G. McKay, L. Le, J. Wagstaff
  1484

More on the cooling history of angrite LEW 86010
G. McKay, T. Ogawa, M. Miyamoto, H. Takeda
  1485

Limited Subsolidus Diffusion in Type B1 CAI; Evidence from TI Distribution in Spinel
G. P. Meeker, J. E. Quick, J. M. Paque
  1486

The effects of orbital and climatic variations on Martian surface heat flow
M. T. Mellon, B. M. Jakosky
  1487

Equatorial ground ice on Mars: Steady-state stability
M. T. Mellon, B. M. Jakosky, S. E. Postawko
  1488

Remote visual detection of impacts on the lunar surface
H. J. Melosh, N. A. Artemjeva, A. P. Golub, I. V. Nemchinov, V. V. Shuvalov, I. A. Trubetskaya
  1489

Thermogeologic mapping of the Moon from lunar orbit
W. W. Mendell, M. A. Wieczorek
  1490

Deucalionis Regio, Mars: Evidence for a unique mineralogic endmember and a crusted surface
E. Merenyi, K. S. Edgett, R. B. Singer
  1491

Do It Yourself Remote Sensing: Generating an Inexpensive High Tech, Real Science Lake Mapping Project for the Classroom
S. M. Metzger
  1492

Opportunity for early science return by the Artemis Program
C. Meyer
  1493

Al-26 production profile and model comparisons in Canyon Diablo
E. Michlovich, D. Elmore, S. Vogt, M. Lipschutz, J. Masarik, R. C. Reedy
  1494

Exsolved kirschsteinite in angrite LEW86010 olivine
T. Mikouchi, H. Takeda, H. Mori, M. Miyamoto, G. McKay
  1495

Analysis of pyroxene absorptions observed in Martian dark regions
J. S. Miller, R. B. Singer
  1496

Refractory precursor components in an Allende ferromagnesian chondrule
K. Misawa, T. Fujita, M. Kitamura, N. Nakamura
  1497

Igneous fractionation and subsolidus equilibration of diogenite meteorites
D. W. Mittlefehldt
  1498

Siderophile element fractionation in meteor crater impact glasses and metallic spherules
D. W. Mittlefehldt, T. H. See, E. R. D. Scott
  1499

Identification of new meteorite, Mihonoseki (L), from broken fragments in Japan
Y. Miura, Y. Noma
  1500

The thickness of eucritic crust in the HED parent body
M. Miyamoto, H. Takeda
  1501

Zaoyang chondrite cooling history from pyroxene Fe(2+)-Mg intracrystalline ordering and exolutions
G. M. Molin, M. Tribaudino, E. Brizi
  1502

Relief of some small landforms on Venus
H. J. Moore, J. J. Plaut, T. J. Parker
  1503

Mars brine formation experiment
J. M. Moore, M. A. Bullock, C. R. Stoker
  1504

Catalytic crystallization of ices by small silicate smokes at temperatures less than 20K
M. Moore, R. Ferrante, R. Hudson, T. Tanabe, J. Nuth
  1505

Effective elastic thickness of the Venusian lithosphere with lateral viscosity variations in the mantle
L. Moresi
  1506

Optical effects of regolith processes on S asteroids as simulated by laser impulse alteration of ordinary chondrite
L. V. Moroz, A. V. Fisenko, L. F. Semjonova, C. M. Pieters
  1507

Altitude profile of aerosols on Mars from measurements of its thermal radiation on limb
V. I. Moroz, D. V. Titov, Yu. M. Gektin, M. K. Naraeva, A. S. Selivanov
  1508

Terrestrial impact melts as analogues for the hematization of Martian surface materials
R. V. Morris, H. V. Lauer Jr., D. C. Golden
  1509

A hydrogen isotope study of CO3 type carbonaceous chondrites; comparison with type 3 ordinary chondrites
A. D. Morse, J. Newton, C. T. Pillinger
  1510

Gamma-Ray Spectrometer for Lunar Scout II
C. E. Moss, W. W. Burt, B. C. Edwards, R. A. Martin, G. H. Nakano, R. C. Reedy
  1511

The influence of oceans on Martian volcanism
P. Mouginis-Mark
  1512

Helium-3 inventory of lunar samples: A potential future energy resource for mankind?
A. V. Murali, J. L. Jordan
  1513

The spectrum of PHOBOS from PHOBOS 2 observations at 0.3-2.6 microns: Comparison to previous data and meteorite analogs
S. Murchie, S. Erard
  1514

Bright soil units on Mars determined from ISM imaging spectrometer data
S. Murchie, J. Mustard
  1515

Variations in the Fe mineralogy of bright Martian soil
S. Murchie, J. Mustard, S. Erard, P. Geissler, R. Singer
  1516

Solar Noble Gases Revealed by Closed System Stepped Etching of a Metal Separate from Fayetteville
Ch. Murer, H. Baur, P. Signer, R. Wieler
  1517

Effects of levitated dust on astronomical observations from the lunar surface
D. L. Murphy, R. R. Vondrak
  1518

Dust-dynamic feedbacks in the Martian atmosphere: Surface dust lifting
J. R. Murphy, J. B. Pollack
  1519

Nitrogen and light noble gases in Parsa enstatite chondrite
S. V. S. Murty
  1520

Composition of weakly altered Martian crust
J. F. Mustard, S. L. Murchie, S. Erard
  1521

From Minerals to Rocks: Toward Modeling Lithologies with Remote Sensing
J. F. Mustard, J. M. Sunshine, C. M. Pieters, A. Hoppin, S. F. Pratt
  1522

SO2 on Venus: IUE, HST and ground-based measurements, and the active volcanism connection
C. Y. Na, E. S. Barker, S. A. Stern, L. W. Esposito
  1523

Evaporation in Equilibrium, in Vacuum, and in Hydrogen Gas
H. Nagahara
  1524

REE and other trace lithophiles in MAC88177, LEW88280 and LEW88763
N. Nakamura, N. Morikawa
  1525

The Erevan Howardite: Petrology of Glassy Clasts and Mineral Chemistry
M. A. Nazarov, A. A. Ariskin
  1526

The Koshak section: Evidence for element fractionation and an oxidation event at the K/T boundary
M. A. Nazarov, D. D. Badjukov, L. D. Barsukova, G. M. Kolesov, D. P. Naidin
  1527

Carbonaceous Xenoliths from the Erevan Howardite
M. A. Nazarov, F. Brändstatter, G. Kurat
  1528

Igneous rock from Severnyi Kolchim (H3) chondrite: Nebular origin
M. A. Nazarov, F. Brandstaetter, G. Kurat
  1529

Petrogenesis of Apollo 12 Mare Basalts, Part 1: Multiple Melts and Fractional Crystallization to Explain Olivine and Ilmenite Basalt Compositions
C. R. Neal, L. A. Taylor
  1530

Petrogenesis of Apollo 12 Mare Basalts, Part 2: an Open System Model to Explain the Pigeonite Basalt Compositions
C. R. Neal, L. A. Taylor
  1531

The coherent backscattering opposition effect
R. M. Nelson, B. W. Hapke, W. D. Smythe, V. Gharakanian, P. Herrera
  1532

On magnetodynamic effects initiated by a high-speed impact of a large cosmic body upon the Earth's surface
I. V. Nemchinov, P. E. Alexandrov, V. I. Artemiev, V. I. Bergelson, V. A. Rybakov
  1533

Determination of cosmic bodies size-velocity distribution by observation of current impacts on Mars
I. V. Nemchinov, A. A. Perelomova, V. V. Shuvalov
  1534

Effects of hydrodynamics and thermal radiation in the atmosphere after comet impacts
I. V. Nemchinov, M. P. Popova, L. P. Shubadeeva, V. V. Shuvalov, V. V. Svetsov
  1535

The High Resolution Stereo Camera (HRSC) for the Lunar Scout I Mission
G. Neukum
  1536

Core formation in the Moon: The mystery of the excess depletion of Mo, W and P
H. E. Newsom, S. A. Maehr
  1537

Dating Native Gold by Noble Gas Analyses
S. Niedermann, O. Eugster, B. Hofmann, Ch. Thalmann, W. U. Reimold
  1538

Helium in interplanetary dust particles
A. O. Nier, D. J. Schlutter
  1539

Geologic mapping of Northern Atla Regio on Venus: Preliminary data
A. M. Nikishin, G. A. Burba
  1540

Beta Regio rift system on Venus: Geologic interpretation of Magellan images
A. M. Nikishin, N. N. Bobina, V. K. Borozdin, G. A. Burba
  1541

Beta Regio - Phoebe Regio on Venus: Geologic mapping with the Magellan data
A. M. Nikishin, V. K. Borozdin, N. N. Bobina, G. A. Burba
  1542

Largest impact features on Venus: Non-preserved or non-recognizable?
O. V. Nikolaeva
  1543

Exposure ages of carbonaceous chondrites, 1
K. Nishiizumi, J. R. Arnold, M. W. Caffee, R. C. Finkel, J. R. Southon, H. Nagai, M. Honda, P. Sharma, M. Imamura, K. Kobayashi
  1544

Identification of an interstellar oxide grain from the Murchison meteorite by ion imaging
L. R. Nittler, R. M. Walker, E. Zinner, P. Hoppe, R. S. Lewis
  1545

Fragments of ancient lunar crust: Ferroan noritic anorthosites from the descartes region of the Moon
M. D. Norman, C. Alibert, M. T. McCulloch
  1546

Volatility in the lunar crust: Trace element analyses of lunar minerals by PIXE proton microprobe
M. D. Norman, W. L. Griffin, C. G. Ryan
  1547

Impact glasses from the ultrafine fraction of lunar soils
J. A. Norris, L. P. Keller, D. S. McKay
  1548

The Sm-(146,147)-Nd-(142,143) formation interval for the lunar mantle and implications for lunar evolution
L. E. Nyquist, C.-Y. Shih, H. Wiesmann, B. M. Bansal
  1549

Goniospectrometric Properties of a White Standard
A. Oehler, A. Dummel
  1550

Characterization of Minnesota Lunar Simulant for Plant Growth
J. P. Oglesby, W. L. Lindsay, W. Z. Sadeh
  1551

Dynamics of large scale impacts on Venus and Earth
J. D. Okeefe, T. J. Ahrens
  1552

Tambo Quemado: Extraordinary Concentrations of REE and Refractory Trace Elements Caused by Artificial Heating
E. Olsen, I. Hutcheon, C. Moore
  1553

Modelling the Gravity and Magnetic Field Anomalies of the Chicxulub Crater
C. Ortiz Aleman, M. Pilkington, A. R. Hildebrand, W. R. Roest, R. A. F. Grieve, P. Keating
  1554

Self Diffusion of Alkaline-Earth in Ca-Mg-Aluminosilicate Melts, Experimental Improvements on the Determination of the Self-Diffusion Coefficients
O. Paillat, G. J. Wasserburg
  1555

Orthopyroxenes as Recorders of Diogenite Petrogenesis: Major and Minor Element Systematics
J. J. Papike, M. N. Spilde, G. W. Fowler, C. K. Shearer
  1556

Structural evidence for reorientation of Miranda about a paleo-pole
R. Pappalardo, R. Greeley
  1557

Formation and evolution of radial fracture systems on Venus
E. A. Parfitt, J. W. Head
  1558

Thermal and rheological controls on magma migration in dikes: Examples from the east rift zone of Kilauea volcano, Hawaii
E. A. Parfitt, L. Wilson, H. Pinkerton
  1559

Constraints on the rate of discharge and duration of the Mangala Valles flood
T. J. Parker, D. S. Gorsline
  1560

Mixing of a chemically buoyant layer at the top of a thermally convecting fluid: Implications for mantle dynamics with application to Venus
E. M. Parmentier, P. C. Hess, C. Sotin
  1561

Abundance and Composition of Solar KR in the H3-H6 Chondrite Acfer111
A. Pedroni
  1562

First Discovery of the Organic Materials in Deep-Sea Iron Cosmic Spherule
H. Peng, P. Xu
  1563

C/O atomic ratios in micrometer-size crushed grains from Antarctic micrometeorites and two carbonaceous meteorites
M. Perreau, C. Engrand, M. Maurette, G. Kurat, Th. Presper
  1564

Lamellar Olivine in the Divnoe Achondrite: Evidence for High-Pressure Exsolution?
M. I. Petaev
  1565

Opaque-rich lithology in the Divnoe achondrite: Petrology and origin
M. I. Petaev
  1566

Chaunskij: The most highly metamorphosed, shock-modified and metal-rich mesosiderite
M. I. Petaev, R. S. Clarke Jr., E. J. Olsen, E. Jarosewich, A. M. Davis, I. M. Steele, M. E. Lipschutz, M.-S. Wang, R. N. Clayton, T. K. Mayeda
  1567

Spectral reflectance studies of the Humorum Basin region
C. A. Peterson, B. R. Hawke, P. G. Lucey, G. J. Taylor, D. T. Blewett, P. D. Spudis
  1568

Venus magmatic and tectonic evolution
R. J. Phillips, V. L. Hansen
  1569

Post-Igneous Redistribution of Components in Eucrites
W. C. Phinney, D. J. Lindstrom, D. W. Mittlefehldt, R. R. Martinez
  1570

Wavelength dependence of limb-darkening of Mars from visible and near-IR telescopic spectral imaging
E. Pierazzo, R. B. Singer
  1571

Compositional diversity of the lunar North Pole: Preliminary analyses of Galileo SSI data
C. M. Pieters, M. Belton, J. W. Head, R. Greeley, A. McEwen, E. M. Fischer, J. M. Sunshine, K. Klaasen, J. Plutchak, G. Neukum
  1572

Optical effects of space weathering on lunar soils and the role of the finest fraction
C. M. Pieters, E. M. Fischer, O. D. Rode, A. Basu
  1573

MinMap: an Imaging Spectrometer for High Resolution Compositional Mapping of the Moon
C. M. Pieters, J. W. Head, T. B. McCord, The Minmap Team
  1574

Visible-Infrared Properties of Controlled Laboratory Soils
C. M. Pieters, J. F. Mustard, S. F. Pratt, J. M. Sunshine, A. Hoppin
  1575

A comparison of calculated and measured rheological properties of crystallising lavas in the field and in the laboratory
H. Pinkerton, G. Norton
  1576

Magellan Vertical Polarization Radar Observations
J. J. Plaut
  1577

Eruption history of the Tharsis shield volcanoes, Mars
J. B. Plescia
  1578

Geology of Biblis Patera, ULYSSES Patera, and Jovis Tholus, Mars
J. B. Plescia
  1579

Gravity investigation of the Manson impact structure, Iowa
J. B. Plescia
  1580

Elevated Initial 87Sr/86Sr in Ordinary Chondrite Metal
F. A. Podosek, J. C. Brannon, C. Perron, P. Pellas
  1581

Crater destruction on the Venusian highlands by tectonic processes
H. A. Pohn, G. G. Schaber
  1582

Low-Energy Ion Implantation: Large Mass Fractionation of Argon
K. V. Ponganis, Th. Graf, K. Marti
  1583

Global Blackout Following the K/T Chicxulub Impact: Results of Impact and Atmospheric Modeling
K. O. Pope, A. C. Ocampo, K. H. Baines, B. A. Ivanov
  1584

Schools of the Pacific Rainfall Climate Experiment
S. E. Postawko, M. L. Morrissey, G. J. Taylor, P. Mouginis-Mark
  1585

U-Pb isotopic ages and characteristics of ancient (greater than 4.0 Ga) lunar highland rocks
W. R. Premo
  1586

U-Pb Provenance Ages of Shocked Zircons from the K-T Boundary, Raton Basin, Colorado
W. R. Premo, G. A. Izett
  1587

U-Pb Isotopic Systematics of Ferroan Anorthosite 60025
W. R. Premo, M. Tatsumoto
  1588

Thermal Conductivity Measurements of Particulate Materials Under Martian Conditions
M. A. Presley, P. R. Christensen
  1589

Elemental depletions in Antarctic micrometeorites and Arctic cosmic spherules: Comparison and relationships
T. Presper, G. Kurat, C. Koeberl, H. Palme, M. Maurette
  1590

Geologic Mapping of Harmakhis and Reull Valles Region, Mars: Evidence for Multiple Resurfacing and Drainage Events
K. H. Price
  1591

Some deformation trends and topographic characteristics of tesserae on Venus
M. Price, J. Suppe
  1592

Studying Venus using a GIS database
M. Price, J. Suppe
  1593

Oxygen isotopic relationships between the LEW85332 carbonaceous chondrite and CR chondrites
M. Prinz, M. K. Weisberg, R. N. Clayton, T. K. Mayeda
  1594

Impact disturbance of the Venus atmosphere
A. A. Provalov, B. A. Ivanov
  1595

Chocolate tablet aspects of cytherean Meshkenet Tessera
J. Raitala
  1596

Ridge belt-related scarps and troughs: Compressional crustal bending on Venus
J. Raitala, T. Toermaenen, K. Kauhanen, T. Tokkonen
  1597

SCR neon and argon in Kapoeta feldspar: Evidence for an active ancient Sun
M. N. Rao, D. H. Garrison, D. D. Bogard
  1598

Cosmogenic-radionuclide profiles in Knyahinya: New measurements and models
R. C. Reedy, J. Masarik, K. Nishiizumi, J. R. Arnold, R. C. Finkel, M. W. Caffee, J. Southon, A. J. T. Jull, D. J. Donahue
  1599

Kalkkop crater, Eastern Cape: A new impact crater in South Africa
W. U. Reimold, F. G. Leroux, C. Koeberl, S. B. Shirey
  1600

Micrometeorite dynamic pyrometamorphism: Nonstoichiometric clinoenstatite (CLEN)
F. J. M. Rietmeijer
  1601

Micrometeorite dynamic pyrometamorphism: Observation of a thermal gradient in iron-nickel sulfide
F. J. M. Rietmeijer
  1602

Wavelength Dispersive Analysis with the Synchrotron X-ray Fluorescence Microprobe
M. L. Rivers, K. S. Thorn, S. R. Sutton, K. W. Jones, S. Bajt
  1603

Subduction on the margins of coronae on Venus: Evidence from radiothermal emissivity measurements
C. A. Robinson
  1604

Preliminary results from Mariner 10: High resolution images of the Moon
M. S. Robinson, B. R. Hawke, K. Edwards, P. G. Lucey, B. E. Clark
  1605

Chronology, eruption duration, and atmospheric contribution of Apollinaris Patera, Mars
M. S. Robinson, P. J. Mouginis-Mark, J. R. Zimbelman, S. S. C. Wu
  1606

The Manson impact crater: Estimation of the energy of formation, possible size of the impacting asteroid or comet, and ejecta volume and mass
D. J. Roddy, E. M. Shoemaker, R. R. Anderson
  1607

Comparative hypsometric analysis of both Earth and Venus topographic distributions
P. Rosenblatt, P. C. Pinet, E. Thouvenot
  1608

Derivation of the midinfrared (5.0-25.0 micron) optical constants of hydrous carbonate and sulfate
T. L. Roush, J. B. Orenberg, J. B. Pollack
  1609

Euhedral Metallic-Fe-Ni Grains in Extraterrestrial Samples
A. E. Rubin
  1610

Named Venusian craters
J. F. Russell, G. G. Schaber
  1611

A carbon and nitrogen isotope study of carbonaceous vein material in ureilite meteorites
S. S. Russell, J. W. Arden, I. A. Franchi, C. T. Pillinger
  1612

C-O Volatiles in Apollo 15 and Apollo 17 Picritic Glasses
M. J. Rutherford, R. A. Fogel
  1613

Formation of the low-mass solar nebula
T. V. Ruzmaikina, I. V. Khatuncev, T. V. Konkina
  1614

Asteroid collisions: Target size effects and resultant velocity distributions
E. V. Ryan
  1615

Detectability of crystalline ferric and ferrous minerals on Mars
D. E. Sabol Jr., J. F. Bell III, J. B. Adams
  1616

Distribution of small volcanic cones on the surface of Venus by size and elevation: Implications for differential deposition of volcanic features
J. F. Lockwood, M. Ellison, J. Johnson, G. Kamatsu
  1617

Venus pancake dome formation: Morphologic effects of a cooling-induced variable viscosity during emplacement
S. E. H. Sakimoto, M. T. Zuber
  1618

Thermal Infrared Remote Sensing and Kirchhoff's Law: I Laboratory Measurements
J. W. Salisbury, A. Wald, D. M. D'Aria
  1619

Magellan at Venus: Summary of science findings
R. S. Saunders, E. R. Stofan, J. J. Plaut, D. A. Senske
  1620

Preliminary estimation of tagamite cooling conditions (Puchezh-Katunki Astrobleme, Russia)
L. Sazonova, V. Feldman, N. Korotaeva
  1621

Venus' impact-crater database: Update to approximately 98 percent of the planet's surface
G. G. Schaber, D. J. Chadwick
  1622

Local topography of Mars and its relationship to surface weathering processes
M. W. Schaefer
  1623

Diapirs and cantaloupes: Layering and overturn of Triton's crust
P. Schenk, M. P. A. Jackson
  1624

Geology of the southern hemisphere of Triton: No polar CAP
P. Schenk, J. M. Moore
  1625

The 3-D Moons: The Voyager stereo atlas of the outer solar system
P. Schenk, J. M. Moore
  1626

Iridium in sediments containing large abundances of Australasian microtektites from DSDP hole 758B in the Eastern Indian Ocean and from DSDP hole 769A in the Sulu Sea
G. Schmidt, L. Zhou, J. T. Wasson
  1627

Pressure versus drag effects on crater size
R. M. Schmidt
  1628

Searching for ancient Venus
P. H. Schultz
  1629

Impactor control of central peak and peak-ring formation
P. H. Schultz, D. E. Gault
  1630

Further Analyses of Rio Cuarto Impact Glass
P. H. Schultz, T. E. Bunch, C. Koeberl, W. Collins
  1631

C2, CN and dust in Comet Wilson (1987VII)
R. Schulz, M. F. Ahearn, P. V. Birch, C. Bowers, M. Kempin, R. Martin
  1632

Strength and deformation properties of basaltic lava flows on planetary surfaces
R. A. Schultz
  1633

Mars: New evidence for origin of some Valles Marineris layered deposits
D. H. Scott
  1634

Post-metamorphic brecciation in type 3 ordinary chondrites
E. R. D. Scott, T. J. McCoy, K. Keil
  1635

Cathodoluminescence observations of in situ aqueous destruction of chondrules in the Murchison CM chondrite
D. W. G. Sears, P. H. Benoit, L. Jie, A. S. R. Sears
  1636

Diffusive redistribution of water vapor in the solar nebula revisited
W. D. Sears
  1637

Lunar basalt meteorite EET 87521: Petrology of the clast population
A. S. Semenova, M. A. Nazarov, N. N. Kononkova
  1638

Magnetic Properties and Mössbauer Analyses of Glass from the K-T Boundary, Beloc, Haiti
F. E. Senftle, A. N. Thorpe, L. May, A. Barkatt, M. A. Adel-Hadadi, G. S. Marbury, G. Izett, H. Sigurdsson, F. J.-M. R. Maurasse
  1639

Rifting at Devana Chasma, Venus: Structure and estimation of the effective thickness of the elastic lithosphere
D. A. Senske
  1640

Volcanic rises on Venus: Geology, formation, and sequence of evolution
D. A. Senske, E. R. Stofan, D. L. Bindschadler, S. E. Smrekar
  1641

Molecular equilibria and condensation sequences in carbon rich gases
C. M. Sharp, G. J. Wasserburg
  1642

Chicxulub impact basin: Gravity characteristics and implications for basin morphology and deep structure
V. L. Sharpton, K. Burke, S. A. Hall, S. Lee, L. E. Marin, G. Suarez, J. M. Quezada-Muneton, J. Urrutia-Fucugauchi
  1643

Basaltic magmatism on the Moon. A perspective from volcanic picritic glasses
C. K. Shearer, J. J. Papike
  1644

Origin of the Apollo 15 Very Low TI Green Glass. A Perspective from the Compositional Diversity in the Very Low TI Glasses
C. K. Shearer, J. J. Papike
  1645

Orthopyroxenes as Recorders of Diogenite Petrogenesis: Trace Element Systematics
C. K. Shearer, J. J. Papike, G. D. Layne
  1646

Combined Backscatter Mössbauer Spectrometer/X-ray Fluorescence Analyzer (BaMS/XRF) for Extraterrestrial Surfaces
T. D. Shelfer, E. L. Wills, D. G. Agresti, M. M. Pimperl, M. H. Shen, R. V. Morris, T. Nguyen
  1647

The roughness of the Martian surface: A scale dependent model
M. K. Shepard, E. A. Guinness, R. E. Arvidson
  1648

Chronology of lunar granite 12033,576: Resetting of Rb-Sr and K-Ca isochrons
C.-Y. Shih, H. Wiesmann, D. H. Garrison, L. E. Nyquist, D. D. Bogard
  1649

The chondrite Mihonoseki: New observed fall
M. Shima, A. Okada, K. Nagao
  1650

Clementine: an Inexpensive Mission to the Moon and Geographos
E. M. Shoemaker, S. Nozette
  1651

Research program on the Manson impact structure, Iowa
E. M. Shoemaker, D. J. Roddy, R. R. Anderson
  1652

Petrography of shock features in the 1953 Manson 2-A drill core
N. M. Short, D. P. Gold
  1653

FE-60 and the evolution of eucrites
A. Shukolyukov, G. W. Lugmair
  1654

Geoid, topography, and convection-driven crustal deformation on Venus
M. Simons, B. H. Hager, S. C. Solomon
  1655

Petrography and origin of refractory inclusions from the Murray and Murchison C2 chondrites
S. B. Simon, L. Grossman, A. Hsu
  1656

Scattering by Venus' surface
R. A. Simpson, G. L. Tyler, M. J. Maurer, E. Holmann, P. B. Wong
  1657

Venus gravity: New Magellan low altitude data
W. L. Sjogren, A. S. Konopliv, N. Borderies, M. Batchelder, J. Heirath, R. N. Wimberly
  1658

Size distributions and aerodynamic equivalence of metal chondrules and silicate chondrules in ACFER 059
W. R. Skinner, J. M. Leenhouts
  1659

GMM-1: A 50 degree and order gravitational field model for Mars
D. E. Smith, F. J. Lerch, R. S. Nerem, M. T. Zuber, G. B. Patel, S. K. Fricke, F. G. Lemoine
  1660

Response of the topography and gravity field on Venus to mantle upwelling beneath a chemical boundary layer
S. E. Smrekar, E. M. Parmentier
  1661

Primary differentiation in the early Earth: Nd and Sr isotopic evidence from diamondiferous eclogites for both old depleted and old enriched mantle, Yakutia, Siberia
G. A. Snyder, E. A. Jerde, L. A. Taylor, A. N. Halliday, V. N. Sobolev, N. V. Sobolev, R. N. Clayton, T. K. Mayeda, P. Deines
  1662

Chronology and genesis of high-Ti mare volcanism: Melting of cogenetic depleted and enriched reservoirs
G. A. Snyder, L. A. Taylor, A. N. Halliday
  1663

Geochronology and petrogenesis of the western highlands alkali suite: Radiogenic isotopic evidence from Apollo 14
G. A. Snyder, L. A. Taylor, A. N. Halliday
  1664

Magnesian anorthosites from the western highlands of the Moon: Isotope geochemistry and petrogenesis
G. A. Snyder, L. A. Taylor, A. N. Halliday
  1665

Differentiation of magma oceans and the thickness of the depleted layer on Venus
V. S. Solomatov, D. J. Stevenson
  1666

A tectonic resurfacing model for Venus
S. C. Solomon
  1667

The missing impact craters on Venus
D. H. Speidel
  1668

Delimitation of terrestrial impact craters by way of pseudotachylytic rock distribution
J. G. Spray
  1669

Contributions of the Clementine mission to our understanding of the processes and history of the Moon
P. D. Spudis, P. G. Lucey
  1670

Impact basins on Venus and some interplanetary comparisons
P. D. Spudis, V. L. Sharpton
  1671

Geology and deposits of the Serenitatis basin
P. D. Spudis, B. R. Hawke, P. G. Lucey
  1672

Earth-based measurement of lunar topography using delayed radar interferometry
N. J. S. Stacy, D. B. Campbell
  1673

Fe/Mn in olivine of carbonaceous meteorites
I. M. Steele
  1674

Two-polarity magnetization in the Manson impact breccia
M. B. Steiner, E. M. Shoemaker
  1675

Multielement analysis of interplanetary dust particles using TOF-SIMS
T. Stephan, W. Kloeck, E. K. Jessberger, H. Rulle, J. Zehnpfenning
  1676

Magnetically controlled solar nebula
T. F. Stepinski, M. Reyes-Ruiz
  1677

Expectations for the Martian core magnetic field
D. J. Stevenson
  1678

Volatile loss from accreting icy protoplanets
D. J. Stevenson
  1679

Fine Resolution Chronology Based on Initial 87Sr/86Sr
B. W. Stewart, D. A. Papanastassiou, R. C. Capo, G. J. Wasserburg
  1680

The Sm-Nd systematics of silicate inclusions in iron meteorites: Results from Caddo (IAB)
B. W. Stewart, D. A. Papanastassiou, G. J. Wasserburg
  1681

Parga and Hecate Chasmata, Venus: Structure, volcanism and models of formation
E. R. Stofan, V. E. Hamilton, K. Cotugno
  1682

Linear structures on the small inner satellites of Saturn
P. J. Stooke
  1683

The age of the Pretoria Saltpan impact crater, South Africa
D. Storzer, C. Koeberl, W. U. Reimold
  1684

The role of CO2 in weathering reactions and the presence of S2 on Venus: Implications for the pyrite stability field
D. W. Straub
  1685

The stability of oxyamphiboles: Existence of Ferric-bearing minerals under the reducing conditions on the surface of Venus
D. W. Straub, R. G. Burns
  1686

Parabolic features and the erosion rate on Venus
R. G. Strom
  1687

Triton's cratering record and its time of capture
R. G. Strom, S. K. Croft
  1688

Are Plinian type eruptions possible on Venus?
S. Sugita, T. Matsui
  1689

Implantation of Nitrogen: Effects of Hydrogen and Implantation Energy
N. Sugiura, T. Futagami, S. Nagai
  1690

Determining the Composition of Olivine on Asteroidal Surfaces
J. M. Sunshine, C. M. Pieters
  1691

Discovery Venera surface: Atmosphere geochemistry experiments mission concept
Y. A. Surkov, J. W. Head, R. Kremnev, K. T. Nock
  1692

X-Ray Microprobe Determination of Chromium Oxidation State in Olivine from Lunar Basalt and Kimberlitic Diamonds
S. R. Sutton, A. S. Bajt, M. L. Rivers, J. V. Smith
  1693

Microanalysis of Iron Oxidation State in Iron Oxides Using X-Ray Absorption Near Edge Structure (XANES)
S. R. Sutton, J. Delaney, S. Bajt, M. L. Rivers, J. V. Smith
  1694

SPH modelling of energy partitioning during impacts on Venus
T. Takata, T. J. Ahrens
  1695

Hydrothermal Alteration Experiments of Olivine with Varying Fe Contents: an Attempt to Simulate Aqueous Alteration of the Carbonaceous Chondrites
K. Takatori, K. Tomeoka, K. Tsukimura, H. Takeda
  1696

Mineralogy and cooling history of magnesian lunar granulite 67415
H. Takeda, M. Miyamoto
  1697

Ti-bearing oxide minerals in lunar meteorite Y793169 with the VLT affinity
H. Takeda, T. Arai, K. Saiki
  1698

A new Antarctic meteorite with chromite, orthopyroxene and metal with reference to a formation model of S asteroids
H. Takeda, K. Saiki, M. Otsuki, T. Hiroi
  1699

Extensional history of Mars' Tharsis Region
K. L. Tanaka, D. J. Chadwick
  1700

Complex structure of the Thaumasia region of Mars
K. L. Tanaka, J. M. Dohm
  1701

Large, ancient, compressional structures on Mars
K. L. Tanaka, R. A. Schultz
  1702

Determination of parameters for hypervelocity dust grains encountered in near-Earth space
W. G. Tanner, C. R. Maag, W. M. Alexander, P. Sappenfield
  1703

Tumuli and Tubes: Teaching Scientific Techniques
M. J. Tatsumura, G. J. Taylor, P. J. Mouginis-Mark
  1704

Sparking Young Minds with Moon Rocks and Meteorites
G. J. Taylor, M. M. Lindstrom
  1705

Evaluation of lunar rocks and soils for resource utilization: Detailed image analysis of raw materials and beneficiated products
L. A. Taylor, J. G. Chambers, A. Patchen, E. A. Jerde, D. S. McKay, J. Graf, R. R. Oder
  1706

Production of O2 on the Moon: A lab-top demonstration of ilmenite reduction with hydrogen
L. A. Taylor, E. A. Jerde, D. S. McKay, M. A. Gibson, C. W. Knudsen, H. Kanamori
  1707

The Mg-suite and the highland crust: an unsolved enigma
S. R. Taylor, M. D. Norman, T. M. Esat
  1708

The sand bag model of the dispersion of the cosmic body in the atmosphere
A. V. Teterev, I. V. Nemchinov
  1709

Atmospheric breakup of a small comet in the Earth's atmosphere
A. V. Teterev, N. I. Misychenko, L. V. Rudak, G. S. Romanov, A. S. Smetannikov, I. V. Nemchinov
  1710

Original size of the Vredefort structure, South Africa
A. M. Therriault, A. M. Reid, W. U. Reimold
  1711

Origin of the Vredefort structure, South Africa: Impact model
A. M. Therriault, A. M. Reid, W. U. Reimold
  1712

Synoptic observations of near surface processes of an insolated ice-dust body under space conditions: The case of KOSI 9 and 10
K. Thiel, G. Koelzer, E. Lorenz, H. Kochan, J. Gebhard, E. Gruen
  1713

Cometary interplanetary dust particles? an update on carbon in anhydrous IDPS
K. L. Thomas, L. P. Keller, G. E. Blanford, D. S. McKay
  1714

Magellan Mission Progress Report
T. W. Thompson, Magellan Flight Team
  1715

Discharge rates in Ma'adim Vallis, Mars
G. D. Thornhill, D. A. Rothery, J. B. Murray, T. Day, A. C. Cook, J.-P. Muller, J. C. Iliffe
  1716

Objective Determination of Image End-Members in Spectral Mixture Analysis
S. Tompkins, J. F. Mustard, C. M. Pieters, D. W. Forsyth
  1717

Distribution and geologic history of materials excavated by the lunar crater Bullialdus
S. Tompkins, C. M. Pieters, J. F. Mustard
  1718

Core formation by giant impacts: Conditions for intact melt region formation
W. B. Tonks, H. J. Melosh
  1719

The U-Th-Pb, Sm-Nd, and Ar-Ar isotopic systematics of lunar meteorite Yamato-793169
N. Torigoye, K. Misawa, G. B. Dalrymple, M. Tatsumoto
  1720

Complex ridged terrain-related ridge belts on Venus: Global distribution and classification
T. Toermaenen
  1721

The parent magma of the Nakhla (SNC) meteorite: Reconciliation of composition estimates from magmatic inclusions and element partitioning
A. H. Treiman
  1722

Intact capture of hypervelocity particles on Shuttle
P. Tsou, D. E. Brownlee, A. L. Albee
  1723

Photogeological analysis of Europan tectonic features
B. R. Tufts
  1724

Is there uniformitarian or catastrophic tectonics on Venus?
D. L. Turcotte
  1725

Impact-induced devolatilization of CaSO4 anhydrite and implications for K-T extinctions: Preliminary results
J. A. Tyburczy, T. J. Ahrens
  1726

Measurements of the dielectric properties of simulated comet material as part of the KOSI 10 experiment
S. Ulamec, H. Svedhem, H. Kochan
  1727

Geology of Galileo Regio quadrangle, Ganymede
J. R. Underwood Jr., R. Casacchia, R. Diplanetologia, A. Woronow, M. J. Teeling
  1728

Reverse polarity magnetized melt rocks from the Chicxulub impact structure, Yucatan Peninsula, Mexico
J. Urrutia-Fucugauchi, L. E. Marin, V. L. Sharpton, J. M. Quezada
  1729

On modelling nuclear reactions in meteorites
G. K. Ustinova, A. K. Lavrukhina
  1730

IMPS albedo and diameter for Asteroid 243 Ida
G. J. Veeder, E. F. Tedesco
  1731

Are the C delta light nitrogen and noble gases located in the same carrier?
A. B. Verchovsky, S. S. Russell, C. T. Pillinger, A. V. Fisenko, Y. A. Shukolyukov
  1732

Numerical modeling of impact erosion of atmospheres: Preliminary results
A. M. Vickery
  1733

Comparison of visible and near-infrared reflectance spectra of CM2 carbonaceous chondrites and primitive asteroids
F. Vilas, T. Hiroi, M. E. Zolensky
  1734

Recondensation in the early solar system: Physical conditions and source material
A. V. Vityazev, V. A. Dorofeyeva, A. B. Makalkin
  1735

The Clementine Mission Science Return at the Moon and Geographos
R. W. Vorder Bruegge, M. E. Davies, D. M. Horan, P. G. Lucey, C. M. Pieters, A. S. McEwen, S. Nozette, E. M. Shoemaker, S. W. Squyres, P. C. Thomas
  1736

Aluminum-26 Activities in Meteorites
J. F. Wacker
  1737

Rare Earth Elements in Individual Minerals in Shergottites
M. Wadhwa, G. Crozaz
  1738

Origin of High-Ti Lunar Ultramafic Glasses
T. P. Wagner, T. L. Grove
  1739

Rhenium-osmium isotope systematics of ordinary chondrites and iron meteorites
R. J. Walker, J. W. Morgan, M. F. Horan, J. N. Grossman
  1740

Diffusion-controlled Magnesium Isotopic Fractionation of a Single Crystal Forsterite Evaporated from the Solid State
J. Wang, A. M. Davis, A. Hashimoto, R. N. Clayton
  1741

Limits on differentiation of melt sheets from basin-scale lunar impacts
P. H. Warren
  1742

Consortium study of lunar meteorites Yamato-793169 and Asuka-881757: Geochemical evidence of mutual similarity, and dissimilarity versus other mare basalts
P. H. Warren, M. M. Lindstrom
  1743

Magnetic record in chondrite meteorites
P. J. Wasilewski, J. L. Faris, M. V. Obryan
  1744

AGB stars as a source of short-lived radioactive nuclei in the solar nebula
G. J. Wasserburg, R. Gallino, M. Busso, C. M. Raiteri
  1745

Multiplicity of chondrule heating events and the coarsening of chondrule textures
J. T. Wasson
  1746

Equilibrium and fractional crystallization of a primitive Shergottite composition
L. E. Wasylenki, J. H. Jones, L. Le, A. J. G. Jurewicz
  1747

High D/H ratios of water in magmatic amphiboles in Chassigny: Possible constraints on the isotopic composition of magmatic water on Mars
L. L. Watson, I. D. Hutcheon, S. Epstein, E. M. Stolper
  1748

Arcuate and circular structures in the Tharsis region: Evidence of coronae on Mars
T. R. Watters, J. R. Zimbelman, D. H. Scott
  1749

A Fresh Look at Crater Scaling Laws for Normal and Oblique Hypervelocity Impacts
A. J. Watts, D. R. Atkinson, S. R. Rieco, J. B. Brandvold, S. L. Lapin, C. R. Coombs
  1750

Coagulation of grains in static and collapsing protostellar clouds
S. J. Weidenschilling, T. V. Ruzmaikina
  1751

The formation of FeO-rich pyroxene and enstatite in unequilibrated enstatite chondrites: A petrologic-trace element (SIMS) study
M. K. Weisberg, M. Prinz, R. A. Fogel, N. Shimizu
  1752

Geology and radiophysical properties of the Venera and VEGA landing sites
C. M. Weitz, A. T. Basilevsky
  1753

A Study of Carbonates, Sulfates, and Phosphates Using Thermal Emission Spectroscopy
M. L. Wenrich, P. R. Christensen
  1754

Weathering features and secondary minerals in Antarctic Shergottites ALHA77005 and LEW88516
S. J. Wentworth, J. L. Gooding
  1755

Petrology and Geochemistry of VLT Glasses from Double Drive Tube 79001/2
S. J. Wentworth, D. J. Lindstrom, R. R. Martinez, D. S. McKay
  1756

Variety in planetary systems
G. W. Wetherill
  1757

Elevation and igneous crater modification on Venus: Implications for magmatic volatile content
R. W. Wichman
  1758

Large floor-fractured craters and isostatic crater modification: Implications for lithospheric thickness on Venus
R. W. Wichman, P. H. Schultz
  1759

Degradation sequence of young lunar craters from orbital infrared survey
M. A. Wieczorek, W. W. Mendell
  1760

A long-term change of the AR/KR/XE fractionation in the solar corpuscular radiation
R. Wieler, H. Baur, P. Signer
  1761

Multispectral studies of selected crater- and basin-filling lunar Maria from Galileo Earth-Moon encounter 1
D. A. Williams, R. Greeley, G. Neukum, R. Wagner
  1762

Equilibrium models of mass distribution and collisional lifetimes of asteroids
D. R. Williams, G. Wetherill
  1763

Formation of perched lava ponds on basaltic volcanoes: Interaction between cooling rate and flow geometry allows estimation of lava effusion rates
L. Wilson, E. A. Parfitt
  1764

A classification scheme for the morphology of lava flow fields
L. Wilson, H. Pinkerton, J. W. Head, K. M. Roberts
  1765

CERN-derived analysis of lunar radiation backgrounds
T. L. Wilson, R. Svoboda
  1766

Multivariate Statistical Analysis: Principles and Applications to Coorbital Streams of Meteorite Falls
S. F. Wolf, M. E. Lipschutz
  1767

Characterization of the Marquez Dome buried impact crater using gravity and magnetic data
A. M. Wong, A. M. Reid, S. A. Hall, V. L. Sharpton
  1768

Morphologic classes of impact basins on Venus
C. A. Wood, W. Tam
  1769

LREE variability in CM matrices: Another look at meteorite compaction ages
D. S. Woolum, K. Poelstra, C. Alexander, T. Ireland
  1770

The carbon components in SNC meteorites of feldspathic harzburgite composition
I. P. Wright, C. Douglas, C. T. Pillinger
  1771

Further carbon isotope measurements of LEW 88516
I. P. Wright, C. Douglas, C. T. Pillinger
  1772

Shock attenuation at the Slate Islands revisited
S. Wu, P. B. Robertson, R. A. F. Grieve
  1773

Convex Set and Linear Mixing Model
P. Xu, R. Greeley
  1774

Stable Ni isotopes and Be-10 and Al-26 in metallic spheroids from Meteor Crater, Arizona
S. Xue, G. F. Herzog, G. S. Hall, J. Klein, R. Middleton, D. Juenemann
  1775

Geometrical Analysis of the Microcraters Found on LDEF Samples
K. Yamakoshi, H. Ohashi, M. Noma, H. Sakurai, K. Nakashima, K. Nogami, R. Omori
  1776

Antipodal Fragment Velocities for Porous and Weak Targets at Catastrophic Impacts
M. Yanagisawa, T. Itoi
  1777

Regolith breccia consisting of H and LL chondrite mixture
K. Yanai, H. Kojima
  1778

Consortium reports on lunar meteorites Yamato 793169 and Asuka 881757, a new type of mare basalt
K. Yanai, H. Takeda, M. M. Lindstrom, M. Tatsumoto, N. Torigoe, K. Misawa, P. H. Warren, G. W. Kallemeyn, C. Koeberl, H. Kojima
  1779

Preliminary AEM study of the microstructure and composition of metal particles in ordinary chondrites
C. W. Yang, D. B. Williams, J. I. Goldstein
  1780

Micrometeorite pre-solar diamonds from Greenland cryoconite?
P. D. Yates
  1781

The connection between Venus' free obliquity and its CMB oblateness
C. F. Yoder
  1782

Trace element compositions of spinel-rich refractory inclusions from the Murchison meteorite
S. Yoneda, P. J. Sylvester, S. B. Simon, L. Grossman, A. Hsu
  1783

Inter- and intra-crystalline oxygen isotope distribution of fassaites in Allende CAI
H. Yurimoto, H. Nagasawa, Y. Mori
  1784

Age and thermochronology of K-feldspars from the Manson Impact Structure
P. K. Zeitler, M. J. Kunk
  1785

Spectral analysis of chemisorbed CO2 on Mars analog materials
A. P. Zent, T. L. Roush
  1786

Lewis Cliff 87057: A new metal-rich E3 chondrite with similarities to Mt. Egerton, Shallowater and Happy Canyon
Y. Zhang, P. H. Benoit, D. W. G. Sears
  1787

Chemical zoning and diffusion of Ca, Al, Mn, and CR in olivine of springwater pallasite
Y. Zhou, I. M. Steele
  1788

Comparison of flank modification on Ascraeus and Arsia Montes volcanoes, Mars
J. R. Zimbelman
  1789

Numerical simulation of lava flows: Applications to the terrestrial planets
J. R. Zimbelman, B. A. Campbell, J. Kousoum, D. J. Lampkin
  1790

Chemical composition of new Acapulcoites and Lodranites
J. Zipfel, H. Palme
  1791

Diffuse reflectance spectra of orthopyroxene, olivine, and plagioclase as a function of composition and structure
M. E. Zolensky, L. Le, C. Galindo, R. Morris, V. Lauer, F. Vilas
  1792

Mineralogy of dark clasts in primitive versus differentiated meteorites
M. E. Zolensky, M. K. Weisberg, R. A. Barrett, M. Prinz
  1793

K, U, and Th behavior in Martian environmental conditions
M. Yu. Zolotov, T. V. Krot, L. V. Moroz
  1794

On dust emissions from the jovian system
H. A. Zook, E. Gruen, M. Baguhl, A. Balogh, S. J. Bame, H. Fechtig, R. Forsyth, M. S. Hanner, M. Horanyi, J. Kissel
  1795

Wrinkle ridges, reverse faulting, and the depth penetration of lithospheric stress in lunae planum, Mars
M. T. Zuber
  1796

Possible flexural signatures around Olympus and Ascraeus Montes, Mars
M. T. Zuber, B. G. Bills, H. V. Frey, W. S. Kiefer, R. S. Nerem, J. H. Roark
  1797