Thursday, March 19, 1998 POSTER SESSION II 7:30 p.m. Space Center Houston

LIFE ON MARS AND EARTH

Allen C. C. Graham C. R. Combie J. Albert F. G. Steele A. McKay D. S. Biological Signatures in Carbonates: Yellowstone National Park

Allen C. C. McKay D. S. Biomarkers in Thermal Spring Carbonates: Implications for Mars

Allen C. C. Taunton A. E. Taylor M. R. McKay D. S. Microbes in Carbonate Thermal Springs: Hot Springs National Park

Westall F. de Wit M. J. Dann J. de Ronde C. E. J. Gerneke D. Hydrothermal Sediments and Fossil Bacteria from the Early Archaean of South Africa as Analogues for Early Life on Mars

Grin E. A. Cabrol N. A. Deep Basalt Aquifers in Orcus Patera, Elysium Basin Mars: Perspectives for Exobiology

Flynn G. J. Ni in the Soil of Mars: A Chronometer to Measure the Global Soil Production Rate and Implications for Exobiology

Hagerty J. J. Newsom H. E. Potential Toxicity of the Martian Soil

Schuerger A. C. Application of Basic Concepts in Plant Pathogenesis Suggests Minimal Risk for Return of Extraterrestrial Samples from Mars

Stansbery E. K. Allton J. H. Verifying Biological Containment for Mars Sample Return Spacecraft: A New Perspective

MARTIAN SPECTRAL CHARACTERISTICS AND TERRESTRIAL ANALOGS

Wang A. Jolliff B. L. Haskin L. A. Raman Spectroscopic Characterization of a Highly Weathered Basalt – Igneous Mineralogy, Alteration Products, and a Bug

Rajmon D. Multispectral Microscopic Imaging for Planetary Exploration

Lindstrom I. K. Lindstrom M. M. The Effect of “Martian” Dust on the Reflectance Spectra of Igneous and Sedimentary Rocks

Erard S. A Spectrophotometric Model of Mars in the Near-Infrared Herr K. C. Forney P. B. Pimentel G. C. Mariner Mars 6/7 Infrared Spectrometers: Lab Simulation of Mars Spectra

Allen C. C. Morris R. V. Jager K. M. Golden D. C. Lindstrom D. J. Lindstrom M. M. Lockwood J. P. Martian Regolith Simulant JSC Mars-1

Golden D. C. Morris R. V. Ming D. W. Mineralogy of the Clay Size Fraction (<2 µm) of Palagonitic Tephra from the Upper Slopes of Mauna Kea Volcano, Hawaii: Implications for the Mineralogy of Aeolian Dust on Mars

Mancinelli R. L. White M. R. Bishop J. L. Banin A. Mineralogical Analysis of Ammonium in Clays: The Fate of N on Mars

Ming D. W. Golden D. C. Liu C. C. Dawson A. D. Hedgecock J. C. PHEEMS: A Mars Soil Reactivity Experiment

Presley M. A. The Use of Multiple Hypotheses to Determine Characteristics of Martian Surficial Units: Example, Oxia Palus Quadrangle

Vaniman D. Bish D. Blake D. Collins S. A. Chipera S. Sarrazin P. Elliott S. T. Use of the Prototype CHEMIN XRD/XRF Instrument in Analyzing Complex Mixtures of Potential Martian Sulfate Minerals

Freund F. Butow S. J. Dickinson J. T. “Dry” Rocks and the Generation of Short-lived H2O Pulses During Shock

Slade M. A. Butler B. J. Harmon J. K. Jurgens R. F. Haldemann A. F. C. Radar Full-Disk Imaging and Topography of Mars During the 1999 Opposition

MARTIAN METEORITES

Hale V. P. S. McSween H. Y. McKay G. Cumulus Pyroxene in Shergotty: Why Do Estimates Vary Between Experimental and Observational Studies?

Puga E. Jagoutz E. Nieto J. M. Diaz de Federico A. Ruiz-Cruz M. D. On the Origin of the Brown Color in ALHA 77005 Olivine

Rao M. N. Wentworth S. J. Yang S. R. McKay D. S. Records of Molten Martian Soil in EET 79001 Meteorite

Boctor N. Z. Fei Y. Bertka C. M. Alexander C. O. A. Hauri E. Vitrification and High Pressure Phase Transition in Olivine Megacrysts from Lithology A in Martian Meteorite EETA79001

Minitti M. E. Rutherford M. J. Assessment of Shock Effects on Hornblende Water Contents and Isotopic Compositions

El Goresy A. Sharp T. G. Wopenka B. Chen M. A New Very-High-Pressure Silica Mineral in the Shergotty SNC Meteorite: Implications for Shock Metamorphism and the Earth’s Lower Mantle Nyquist L. E. Bogard D. D. Garrison D. H. Reese Y. A Single-Crater Origin for Martian Shergottites: Resolution of the Age Paradox?

Wang A. Jolliff B. L. Haskin L. A. Raman Spectroscopic Characterization of Martian Meteorite Zagami

Brandenburg J. E. Hunter A. The CI as the Missing Old Meteorites of Mars: New Data

ALH 84001

Cooney T. F. Scott E. R. D. Krot A. N. Sharma S. K. Yamaguchi A. Confocal Raman Microprobe and IR Reflectance Study of Minerals in the Martian Meteorite ALH84001

Treiman A. H. Treado P. Martian Maskelynite? Raman Spectra of Plagioclase – Composition Glasses from ALH 84001, EETA79001, and ALHA77005

Greenwood J. P. McSween H. Y. Jr. Origin of Stoichiometric Feldspathic Glasses in ALH84001 by Mixing of Plagioclase and Orthoclase During Multiple Shock Events

Shearer C. K. Adcock C. T. The Relationship Between the Carbonate and Shock-produced Glass in ALH 84001

Sears D. W. G. Kral T. A. SEM Imaging of Martian and Lunar Meteorites and Implications for Microfossils in Martian Meteorites

Westall F. Gobbi P. Gerneke D. Mazzotti G. Microstructures in the Carbonate Globules of Martian Meteorite ALH84001: Preliminary Results of a High Resolution SEM Study

Morris P. A. Allen C. C. Gibson E. K. McKay D. S. Thomas-Keprta K. Reexamination of the Warrawoona Group Fossils (Towers Formation, Western Australia, 3.3 to 3.5 Ga): Analogs of Mars Meteorite Fossils?

Flynn G. J. Keller L. P. Miller M. A. Jacobsen C. Wirick S. Organic Compounds Associated with Carbonate Globules and Rims in the ALH 84001 Meteorite

Treiman A. H. The History of ALH 84001 Revised: Multiple Shock Events

Mathew K. J. Marti K. Nitrogen and Noble Gas Isotopic Signatures in Bulk ALH84001 with Carbonates

Barlow N. G. Status Report on the Search for Source Craters of ALH84001 THE FOUR GALILEANS

Leone G. Wilson L. Ascent & Emplacement of Magmas on Io: Some Considerations on Compositions and Solubilities of Volatiles and Their Roles in Volcanic Activity

James M. R. Wilson L. An Optical Model for Ballistic Plumes on Io

Head J. W. Pappalardo R. T. Greeley R. Sullivan R. Galileo Imaging Team Origin of Ridges and Bands on Europa: Morphologic Characteristics and Evidence for Linear Diapirism from Galileo Data

Head J. W. Sherman N. D. Pappalardo R. T. Greeley R. Sullivan R. Senske D. McEwen A. Galileo Imaging Team Geologic History of the E4 Region of Europa: Implications for Ridge Formation, Cryovolcanism, and Chaos Formation

Spaun N. A. Head J. W. Pappalardo R. T. Galileo Imaging Team Geologic History, Surface Morphology and Deformation Sequence in an Area near Conamara Chaos, Europa

Phillips C. B. McEwen A. S. Hoppa G. V. Geissler P. E. Pappalardo R. Greeley R. Klemaszewski J. Simonelli D. P. Sullivan R. Galileo SSI Team Change Detection on Europa and Io from Voyager and Galileo Images

Turtle E. P. Phillips C. B. McEwen A. S. Moore J. M. Greeley R. Galileo SSI Team Numerical Modeling of Multi-Ring Impact Craters on Europa: Implications for Subsurface Structure

Kuramoto K. Saiganji Y. Yamamoto T. Oscillating Magnetic Dipole Moment of Europa Induced by Jovian Magnetic Field: A Possible Probe for Detecting Europa’s Ocean

Fagents S. A. Kadel S. D. Greeley R. Kirk R. L. Galileo SSI Team Styles of Cryovolcanism on Europa: Summary of Evidence from the Galileo Nominal Mission

Head J. W. Pappalardo R. T. Kay J. Collins G. Prockter L. Greeley R. Chapman C. Carr M. Belton M. J. S. Galileo Imaging Team Cryovolcanism on Ganymede: Evidence in Bright Terrain from Galileo Solid State Imaging Data

Denk T. Neukum G. McCord T. B. Hansen G. B. Hibbitts C. A. Martin P. D. Galileo SSI Team Candidate Surface Materials of the Icy Galilean Satellites That Might be Distinguished by the Galileo SSI Camera

Spencer J. R. Prockter L. Pappalardo R. Head J. Moore J. Local Volatile Migration on Ganymede: Galileo SSI Images, PPR Radiometry, and Theoretical Considerations

Patel J. G. Pappalardo R. T. Head J. W. Collins G. C. Galileo Imaging Team Wavelengths of Ganymede Grooved Terrain Determined from Fourier Analysis of Galileo Images Hiesinger H. Patel J. G. Head J. W. Giese B. Pappalardo R. T. Galileo Imaging Team Uruk Sulcus Region of Ganymede: Techniques to Investigate Orientation and Spacing of Grooves

Prockter L. M. Pappalardo R. T. Head J. W. III Asphaug E. Collins G. C. Galileo SSI Team Genesis of Anshar Sulcus: Evidence for Shear and Extension in Marius Regio

Thomas C. Head J. W. Galileo SSI Team Morphology of Byblus Sulcus, Ganymede from Galileo SSI Data

Hiesinger H. Head J. W. III Galileo Imaging Team Geologic Map of the Nippur Sulcus Region of Ganymede

Prockter L. M. Senske D. Head J. W. III Pappalardo R. T. Collins G. C. Greeley R. Galileo SSI Team Furrow Systems on Ganymede: Morphology, Evolution and Distribution

Deschamps F. Sotin C. Thermal Convection in the Outer Ice I Shell of Ganymede and Callisto

Schenk P. Geology of Gilgamesh, Ganymede: New Insights from Stereo and Topographic Mapping

Heiner S. E. McHone J. F. Klemaszewski J. E. Greeley R. Bender K. C. Homan K. S. McCord T. B. Hibbitts C. A. Hansen G. B. Galileo SSI and NIMS Teams Lofn Crater, Callisto: A Large Flat-floored Impact Crater Observed by Galileo

Homan K. S. Bender K. C. Williams K. K. Klemaszweski J. K. Greeley R. Galileo SSI Team Galileo Views of Three Major Multi-Ring Features on Callisto

Chuang F. C. Greeley R. Klemaszewski J. E. Moore J. M. Galileo SSI Team Intracrater Landslides on Callisto: Observations from the Galileo Nominal Mission

Ivanov B. A. Neukum G. DeNiem D. Cometary Impact Rates on Jovian Satellites: Questions

Rosanova T. Becker T. Gaddis L. McMacken D. Christiansen W. Blue J. McEwen A. S. Woncik P. Lavoie S. Galileo Team The Galileo Navigator: A Tool for Cartographers and Scientists

Becker T. L. Rosanova T. Gaddis L. McEwen A. S. Phillips C. B. Davies M. E. Colvin T. R. Cartographic Processing of the Galileo SSI Data: An Update on the Production of Global Mosaics of the Galilean Satellites

Milazzo M. McEwen A. Phillips C. B. Dieter N. Plassman J. High-resolution Mosaics of the Galilean Satellites from Galileo SSI VENUS VOLCANISM, TECTONISM, AND MAPPING

Stofan E. R. Smrekar S. E. Coronae at Large Topographic Rises on Venus: Implications for Plume Evolution and Delamination

Tapper S. W. Stofan E. R. Guest J. E. Preliminary Analysis of an Expanded Corona Database

Mastrapa R. M. E. Melosh H. J. Models of Formation for Asymmetric Coronae on Venus

Chapman M. G. Zimbelman J. R. Two Age Groups of Coronae on Venus?

Solomatov V. S. Bakalian F. Moresi L.-N. Numerical Simulations of the Transition from Plate Tectonics to Stagnant Lid Convection: Application to Global Resurfacing on Venus

Rosenblatt P. Barriot J. P. Pinet P. C. Regional Analysis of Topography, Gravimetry and Geology at Two Venusian Hot Spots: Western Eistla and Bell Regiones, and Their Peripheries

Ivanov M. A. Head J. W. Global Stratigraphic Units on Venus: Results of a Geotraverse Around the Venus Globe at 30N Latitude

DeShon H. R. Hansen V. L. Preliminary Geologic History of the Diana-Dali Quadrangle (V37), Venus

Ivanov M. A. Head J. W. Stratigraphy and Evolution of Quetzalpetlatl Corona, Venus: Preliminary Results from the Mapping of V-61 Quadrangle

Aittola M. Raitala J. Stratigraphy and Development of the Hecate Chasma Deformation Area on Venus

Dohm J. M. Tanaka K. L. Geologic Mapping of the Metis Regio (V6) Quadrangle of Venus at 1:5,000,000 Scale

Marinangeli L. Geological Analysis of Western Ishtar Terra Margins, Venus

Senske D. A. Geology of the Tellus and Phoebe Regions of Venus: Unit Identification and Examination of the Relationship Between Plains and Tessera

Ivers C. B. McGill G. E. Kinematics of a Tessera Block in the Vellamo Planitia Quadrangle, Venus

King R. L. Cruz J. Grosfils E. B. Gilmore M. S. Reinen L. A. Kozak S. J. Structural Deformation of Northern Ovda Regio, Venus: Implications for Venusian Tectonics Ghent R. R. Hansen V. L. Geometrical Analysis of Shear-Fracture Ribbons in Ovda Regio, Venus

Banks B. K. Hansen V. L. Chocolate Tablet Boudinage on Venus

Gilmore M. S. Collins G. C. Head J. W. Ivanov M. I. Marinangeli L. Tessera Tectonics

Raitala J. Venusian Ridge Belts: Implications for Fault Friction, Mechanics and State of Stress

Nagasawa C. Sasaki S. Koyama M. Change of Stress Field Around Beta-Atla-Themis Region and Aphrodite Terra, Venus

Tracadas P. W. Zuber M. T. What a Global Stress Map of Venus Reveals

Ristau S. Sammons J. III Grosfils E. Reinen L. Gilmore M. Kozak S. Distribution of Intermediate Volcanoes on Venus as a Function of Altitude

Pike W. A. Frey H. M. Krull A. E. Grosfils E. B. Gilmore M. S. Reinen L. A. Kozak S. J. Viscosity of Venusian Lava Flows: Constraints from Fractal Dimension and Chemical Composition

Ernst R. E. Buchan K. L. Arcuate Dyke Swarms Associated with Mantle Plumes on Earth: Implications for Venusian Coronae

Cook D. L. Chambers N. W. Grosfils E. B. Reinen L. A. Gilmore M. J. Kozak S. J. Volume, Geometry, and Depth of Magma Chambers Associated with Large Volcanoes on Venus

Guest J. E. Stofan E. R. Copp D. L. Observations of Large Shield Volcanoes on Venus

Campbell B. A. Glaze L. Rogers P. G. Pyroclastic Deposits on Venus: Remote-Sensing Evidence and Modes of Formation

Fletcher L. Wright H. Grosfils E. Reinen L. Gilmore M. Kozak S. A Possible Third Festoon Flow in Atalanta Planitia, Venus

Paillou Ph. Masson Ph. Ansan V. Souriot Th. Elizavetin I. Extraction of Planetary Surfaces Physical Parameters Using Radar Remote Sensing

Williams K. K. Greeley R. Aerodynamic Roughness Estimates of Radar-Dark Wind Streaks on Venus

Ghail R. C. If Earth’s Continents Had Never Drifted ORIGINS OF PLANETARY SYSTEMS

Vanhala H. A. T. Boss A. P. Cameron A. G. W. Foster P. N. Triggered Star Formation: The FAQ

Stepinski T. F. Diagnosing Properties of Protoplanetary Disks from Their Evolution

Trilling D. E. Melosh H. J. What If Extrasolar Planets are Rocky?

Cuzzi J. N. Hogan R. C. Dobrovolskis A. R. Turbulent Concentration: Fractal Description, Scaling Laws, and Generalized Applications to Planetesimal Accretion

Matthews L. S. Hyde T. W. Dusty Plasma Coagulation

Swint G. S. Matthews L. S. Hyde T. W. Chondrule Melting Via Transient Heating Events

Haghighipour N. An Analytical Approach to Resonance Trapping Between Saturn and Jupiter

KenKnight C. E. Opacity-Controlled Convection: Evidences

Manuel O. Origin of the Solar System and its Chemical Elements

SATURN SATELLITES

Wood C. A. Caress M. E. Lorenz R. How Do You Select Data Takes for a World You’ve Never Seen? Planning Cassini Radar Studies of Titan

Grasset O. Sotin C. On the Internal Structure and Dynamics of Titan

Jarvis K. S. Vilas F. Larson S. M. Gaffey M. J. Domingue D. Hyperion, Phoebe, and Iapetus: Relationships of the Saturnian Satellites MERCURY

Clark P. E. Starr R. D. X-Ray Spectrometry for Typical Mercury Mission Scenarios

Cook A. C. Robinson M. S. Watters T. R. Edwards K. Digital Elevation Model of the Discovery Region on Mercury

Jurgens R. F. Rojas F. Slade M. A. Haldemann A. F. C. Mercury: New Information on Topography and Orbital Elements

Robinson M. S. Davies M. E. Colvin T. R. Edwards K. E. Revised Positional Information for Mercurian Polar Craters

SMALL BODY JAMBALAYA

Boice D. C. Modeling the Dusty Coma of Comet Hale-Bopp

Ishibashi Y. Abe M. Takagi Y. Photometric Observation of (4660)Nereus; Target Object of Japanese Sample-Return Mission, MUSES-C

Landis R. R. Stern S. A. Wood C. A. Storrs A. D. Observations of 1 Ceres with the HST Faint Object Camera

Rivkin A. S. Davies J. K. Ellison S. L. Lebofsky L. A. High-resolution 2.5–3.5 µm Observations of C-, B- and G-class Asteroids

Flynn G. J. Klock W. Densities and Porosities of Meteorites: Implications for the Porosities of Asteroids

Stooke P. J. Stratified Sedimentary Deposits on Asteroids

Isobe T. Yamamoto H. Homma K. Shingu H. Furukawa S. Matching of Craters in Small Body Images for Shape Estimation

Onose N. Fujiwara A. Impact Cratering Experiments on Gypsum Models of Vesta

Palmer E. E. Wood C. A. Build Your Own Asteroid: A Java Applet to Model Asteroid Formation

Teterev A. V. An Improved Sand Bag Model for Numerical Simulation of a Fragmented Cosmic Body

Teterev A. V. Entry Consequences of the Rarefied Water Formations into the Earth’s Atmosphere FUTURE EXPLORATION AND INSTRUMENTS

Cabrol N. A. Chong-Diaz G. Dohm J. M. Pereira Arredondo M. Dunfield G. Gulick V. C. Jensen- Iglesia A. Keaten R. Herrera Lamelli C. Landheim R. Lee P. C. Pederson L. Roush T. Schwehr K. Stoker C. R. Zent A. Atacama I: Science Results of the 1997 Nomad Rover Field Test in the Atacama Desert, Chile

Eby R. M. Arvidson R. E. Hofmeister A. M. Mars Rover Rock Measurements in Dusty Environments: Lessons from Coated Rocks in the Southwestern United States

Wiens R. C. Cremers D. A. Blacic J. D. Ritzau S. M. Funsten H. O. Nordholt J. E. Elemental and Isotopic Planetary Surface Analysis at Stand-off Distances Using Laser-induced Breakdown Spectroscopy and Laser-induced Plasma Ion Mass Spectrometry

Lucey P. G. Cooney T. F. Sharma S. K. A Remote Raman Analysis System for Planetary Landers

Zolensky M. E. Pieters C. Lipschutz M. E. Clark B. Mass Constraints for Samples Returned to Earth from Bodies Large and Small

Towner M. C. Garry J. R. C. Ball A. J. Zarnecki J. C. Penetration of Regolith Simulant Under Vacuum — Anomalies Old and New

Moss C. E. Prettyman T. H. Reedy R. C. Valentine J. D. High Efficiency CdZnTe Gamma-Ray Detectors for Planetary Missions

Okada T. Kuwada Y. Mizutani H. Particle Size Effects in X-Ray Fluorescence: Implications for Planetary Missions

Okada T. Yamamoto Y. Kuwada Y. Shirai K. Kato M. Tsunemi H. Kitamoto S. Fujimura A. Mizutani H. CCD-based X-Ray Spectrometers for MUSES-C and SELENE Missions

Guinness E. A. Arvidson R. E. Slavney S. Stein T. C. Cutts J. Bachelder A. Cameron J. Ivlev R. Kahn R. Prototyping a Mars Aerobot Mission on Solo Spirit