Goldschmidt 2000 Daily Programme

Cambridge Publications

Publishing for Science


Goldschmidt 2000

An International Conference for Geochemistry

September 3rd - 8th 2000

Oral Sessions, Thursday, 7th September, 09:00 - 12:00



Symposium B

Chemistry and Dynamics of the Earth

Convenors: George Helffrich & Bernie Wood.

Location: Clarendon Lindemann.

09:00 Rehkämper M, Schmalzl J & Hansen U:

The Effect of Plate Dynamics on the Convective Mixing of Chemical Heterogeneities in the Earth's Mantle

09:15 Phipps Morgan J, Morgan WJ & Ravine MA:

'Missing' Dynamic Topography: Geodynamic Evidence Against Deeply Layered Mantle Convection

09:30 Kerrich R & Polat A:

Nb/Ta Variation in Ocean Plateau Basalts, Archaean to Present: The Mantle as a Reservoir of Continental Crust

09:45 Masters G:

KEYNOTE A Seismological View of Geochemical Reservoirs in the Mantle?

10:15 Stachel T, Harris JW & Brey GP:

Kankan Diamonds (Guinea) ­ Messengers from an Enriched Layer at the top of the Lower Mantle

10:30 Thomas C & Kendall J:

The Structure of the Lowermost Mantle

10:45 Discussion:

11:00 Gasperini D, Blichert-Toft J, Bosch D, del Moro A, Macera P, Télouk P & Albarède F:

Ancient Oceanic Plateaus in the Source of EMI Basalts: Evidence from Sardinian Basalt Geochemistry

11:15 Boehler R:

General Melting Behavior at Very High Pressure: Implications for the Earth

11:30 Albarède F & Blichert-Toft J:

The Hf/Sm Fractionation in Basalts and the Evolution of the Terrestrial, Lunar, and Martian Mantles

11:45 Allègre C:

The Transitional Model [2LÆ1L] Model for the Earth's Mantle and the Chemical Geodynamics Paradigm
Programme for the Next Session in Symposium B




Symposium E

Biological Geochemistry

Convenors: Matthew Collins, Derek Lovely & Rob Raiswell.

Location: Oxford University Museum.

09:00 Bencheikh-Latmani R, Leckie J & Spormann A:

Interactions of Pseudomonas fluorescens with Uranyl (UO22+): Implications for Mobility of Uranyl in the Subsurface

09:15 Lovley D, Methe B, Coppi M, Nevin K, Childers S, Lloyd J & Leang C:

Genomic Approach to the Study of Microbial Reduction of Iron and Uranium in Subsurface Environments

09:30 Banwart SA:

Microbial Reduction of Iron(III) Minerals by Natural Organic Matter

09:45 Brantley S, Liermann L, Guynn R & Bullen T:

Fractionation of Fe Isotopes by Soil Microbes and Organic Acids

10:00 Arato B, Cziner K, Posfai M, Marton E & Marton P:

Magnetite and Greigite from Magnetotactic Bacteria and from Sedimentary Rocks: Size Distributions and Microstructures

10:15 Hallberg R:

Biomineralisation by Gallionella

10:30 Hamade T, Phoenix V & Konhauser K:

Photo-chemical and Biologically Mediated Precipitation of Iron and Silica

10:45 Scott S & Fein J:

Experimental Study of the Effect of Fe on Si Adsorption by Bacillus subtilis: Insights into Biological Precipitation of Silicate Minerals

11:00 Phoenix V, Konhauser K & Howe A:

Mechanisms of Rapid Silicate Biomineralisation in Hot Springs

11:15 Van Cappellen P & Dixit S:

Reactivity of Marine Biogenic Silica: Reconciling Water Column and Sediment Data

11:30 Hyacinthe C, Anschutz P, Carbonel P, Jouanneau J & Jorissen F:

Interactions of Iron, Manganese and Nitrogen in Muddy Sediments of the Bay of Biscay

11:45 Motelica-Heino M & Davison W:

In-situ Trace Metals Distribution in Lake Sediment Pore Waters: High Spatial Resolution Depth Profiling and 2D-Mapping
Programme for the Next Session in Symposium E




Symposium F

Ocean Circulation: Past and Present

Convenors: Gideon Henderson & Bill Jenkins.

Location: Physical Chemistry.

09:00 Sigman D, Francois R, Altabet M & Lehman S:

KEYNOTE The Nutrient Status of the Southern Ocean During the Last Ice Age and its Links to the Global Ocean

09:30 McManus J, Francois R & Marchal O:

Foraminifera Stable Isotopes, Bulk Sedimentary 231Pa/230Th, and the Link between Thermohaline Circulation and Rapid Climate Oscillations

09:45 Adkins J, Cheng H, Shen C, Edwards R & Druffel E:

The Pre-bomb, Holocene and Deglacial Radiocarbon Content of the Deep Atlantic Ocean

10:00 Labeyrie L, Cortijo E, Waelbroeck C, Paterne M, Kallel N & Duplessy JC:

Ocean Sediment Isotopic Records of the Last Deglaciation Contain Key Information on the Interactions between Climate and Thermohaline Circulation at the Global Scale

10:15 Schrag DP, Adkins JF & McIntyre K:

Pore Fluid Constraints on Chemistry and Temperature of the Glacial Ocean

10:30 Discussion:

10:45 Hemming SR, Goldstein SL, Bond A & Turrin BD:

Radiogenic Ar Concentrations of De-carbonated Sediments Around South Africa

11:00 Piotrowski AM, Goldstein SL & Hemming SR:

Neodymium Isotopic Evidence for Late Glacial and Holocene Millennial-scale Variations in North Atlantic Deep Water Export to the South Atlantic

11:15 Goldstein SL, Hemming SR, Piotrowski AM & Machlus M:

North Pacific Deep Water Formation During the Last Glacial Maximum?

11:30 Pichat S, Albarede F, Beaufort L, Francois R & Sims KW:

A High Resolution (231Pa/230Th)xs,0 Profile from the Western Pacific Warm Pool over the Last Five Isotopic Stages

11:45 Wolff-Boenisch B, Hamelin B, Angeletti B & Bard E:

Pb Isotope Data from Deep-Sea Sediments from the Southwestern Indian Ocean and the Southeastern Arabian Sea
Programme for the Next Session in Symposium F




Symposium I

Mineral Surfaces and Reactions

Convenors: Andrew Putnis & Vala Ragnarsdottir.

Location: Zoology A.

09:00 Manceau A, Lanson B & Drits V:

KEYNOTE Surface Structural Control of Trace Element Partitioning in Natural Mn Oxides

09:30 Grolimund D, Warner JA, Carrier X & Brown, Jr. GE:

Chemical Behavior of Strontium at the Solid-Liquid Interface of Amorphous Manganese Oxides: A Molecular-level Study Using EXAFS

09:45 Brown, Jr. GE, Chambers SA, Amonette JE, Rustad JR, Kendelewicz T, Doyle CS, Grolimund D, Foster-Mills NS, Joyce SA & Thevuthasan S:

Abiotic Interactions of Aqueous Chromium Ions with Iron Oxide Surfaces

10:00 Tadanier CJ, Eick MJ & Hochella MF:

Surface Complexation Modeling of Pi-Goethite Adsorption Behavior: Integrating Adsorption Edge and Surface Charging Data

10:15 Sverjensky D & Criscenti L:

Speciation of Alkaline Earth Adsorption on the Surfaces of Oxide and Hydroxide Minerals in Salt Solutions

10:30 Machesky M, Wesolowski D, Palmer D & Ridley M:

On the Temperature Dependence of Intrinsic Surface Protonation Equilibrium Constants: An Extension of the Revised MUSIC Model

10:45 Fenter P, Cheng L, Machesky ML, Bedzyk MJ & Sturchio NC:

Probing the Electrical Double-Layer Structure at the Rutile-Water Interface with X-Ray Standing Waves

11:00 Traina S & Chen C:

XAS Investigation of Lanthanide Ion Sorption on Iron Oxide and Cr-Substituted Iron Oxide Surfaces

11:15 Shaw S, Pepper SE, Livens FR, Henderson CMB, Vaughan DJ & Clark SM:

Hydrothermal Formation of Hydrated Ferric Oxides: An in situ Synchrotron Study

11:30 Valsami-Jones E, Fields M & Ragnarsdottir KV:

Apatite Reactivity in the Presence of Rare Earth Elements (REE) and Uranium

11:45 Peaudecerf A, Charlet L, Chapron Y, Reiche I & Menu M:

Influence of Cations on the Dissolution of Apatite ­ A Combined Experimental and Computational Approach
Programme for the Next Session in Symposium I




Symposium J

Mantle Dynamics and Melting

Convenors: Tim Elliott & Erik Hauri.

Location: Clarendon Martin Wood.

09:00 Kelley SP, Brooker RA, Chamorro-Perez E, Wartho J & Wood B:

An Experimental View of the Behaviour of Noble Gases During Mantle Melting

09:15 Burnard P, Farley K, Graham D & Mukhopadhyay S:

Fractionation of Noble Gases During Mantle Melting: Amsterdam-St. Paul's Plateau, South East Indian Ridge

09:30 Barfod DN, Lee D, Ballentine CJ & Halliday AN:

The Role of Deep Melting Under the Cameroon Line in the Fractionation of Helium and Incompatible Lithophile Elements

09:45 Hilton DR, Thirlwall MF, Taylor RN & Murton BJ:

Coupled He-Pb Isotope Relationships along the Reykjanes Ridge with Implications for Plume Structure and the Helium-Paradox

10:00 Stuart F, Ellam R, Fitton G & Raistrick M:

Constraints on Magma Sources in the North Atlantic Ocean from the Isotope Geochemistry of Basalts from Jan Mayen and Snaefellsness, Iceland

10:15 Discussion:

10:30 Blundy J & Green T:

A Partitioning Origin for Strontium Anomalies in Mantle-derived Melts

10:45 Burton KW, Gannoun A, Schiano P, Birck J & Allègre CJ:

The Partitioning of Rhenium and Osmium into Magmatic Olivine and the Consequences for the Chemistry of Oceanic Basalts

11:00 David K, Schiano P & Allègre CJ:

Assessment of Zr/Hf Fractionation in Oceanic Basalts During Petrogenetic Processes

11:15 Dalton J & Blundy J:

Carbonatites from Recycled Eclogites

11:30 Heaman L, Creaser R & Cookenboo H:

Extreme High-field-strength Element Enrichment in Eclogite Xenoliths from the Jericho Kimberlite, Canada: The Geochemical Complement of Subduction Zone Magmatism

11:45 Ionov D, Mukasa S & Bodinier J:

Sr and Nd Isotope Decoupling in the Mantle by Melt Percolation Metasomatism: Evidence from Peridotite Xenoliths from Spitsbergen
Programme for the Next Session in Symposium J




Symposium M

Chemistry and Microbiology of Pollution

Convenors: Adrian Bath & Barbara Sherwood-Lollar.

Location: Earth Sciences.

09:00 Criddle C:

KEYNOTE Serendipity and Bioaugmentation: The Strange True Story of Pseudomonas stutzeri KC

09:30 Edwards E, Cox E, McMaster M, Dworatzek S & Major D:

Bioaugmentation for Complete Dechlorination of Chlorinated Ethenes

09:45 Hall J, Mailloux B, Onstott T, Fuller M, Strenger S, Rothmel R & Deflaun M:

The Effect of Physical and Chemical Sediment Heterogeneity on Aerobic and Anaerobic Bacterial Transport

10:00 Roberts Rogers J, Bennett P & Barker J:

Ligand-Promoted Nutrient Release from Silicates

10:15 McCormick M, Gerdenich M, Kao L & Adriaens P:

Geochemistry of Hydrous Ferric Oxide Reduction by Geobacter metallireducens: Implications for Sustained Dechlorination of Tetrachloromethane

10:30 Slater G, Sherwood Lollar B, Allen-King R & O'Hannesin S:

Carbon Isotopic Fractionation by Zero-Valent Iron: Influence of Surface Pre-treatment

10:45 Discussion:

11:00 Diegor E, Abrajano T, Patel T, Stehmeier L, Gow J & Winsor L:

Biodegradation of Aromatic Hydrocarbons: Microbial and Isotopic Studies

11:15 Ward JAM, Ahad JME, Lacrampe-Couloume G, Slater GF, Edwards EA & Sherwood-Lollar B:

Hydrogen Isotope Fractionation During Methanogenic Degradation of Toluene: Potential for Direct Verification of Bioremediation

11:30 Bottrell S & Spence M:

Assessing Anoxic Biodegradation via Sulphate Reduction Using Sulphate Stable Isotopes

11:45 Lenczewski M, McKay L & Layton A:

Trichloroethylene Biodegradation in Large Undistributed Columns of Fractured Weathered Shale in East Tennessee
Programme for the Next Session in Symposium M




Symposium N

Low Temperature and Metamorphic Geochemistry and Geochronology

Convenor: Nigel Harris.

Location: Zoology B+C.

09:00 Möller A:

In-situ Geochronology and Mineral Growth Episodes: A Tale of Proterozoic to Palaeozoic Shearzone Activity from the Strangways Metamorphic Complex, Central Australia

09:15 Harlov D & Hans-Jürgen F:

Experimental Nucleation of Co-Existing Monazite and Xenotime Grains in Chlorapatite

09:30 Foster G, Vance D, Kinny P, Prince C & Harris N:

The Significance of Monazite U-Th-Pb Age Data in Metamorphic Assemblages: A Combined Chemical and Isotopic Study

09:45 Harris N, Prince C & Vance D:

Fluid Control on Crustal Melting During Orogenesis

10:00 Argles T:

Sm-Nd Isotopic Mapping of the Western Himalayan Syntaxis: Tectono-stratigraphic Correlations and Insights

10:15 Jenkin GR, Ellam R, Rogers G & Stuart F:

What Really Controls Mica Rb-Sr Closure Temperature?

10:30 Xiao Y, Hoefs J, van den Kerkhof A & Fiebig J:

Different Fluid Histories During the Metamorphic Evolution of North and South Dabie Shan, China

10:45 Dunai TJ:

Helium Diffusion in Apatite Revisited: Is the High Temperature Diffusion Mechanism an Artefact or a Reality?

11:00 Cosca M, Giorgis D, Janak M, Kramar N & Mulch A:

The Influence of Metamorphic History on Intragrain Argon Isotope Variations in Metamorphic White Mica Mapped by in situ UV Laser Ablation 40Ar/39Ar Geochronology

11:15 Giorgis D, Cosca M, Rumble D & Liou JG:

Correlated Argon and Oxygen Isotopes in UHP Eclogites from Qinglongshan (Sulu Terrain, China): Evidence for Inherited Argon

11:30 Chen S, Zhou X, Zhang G, Li J & Chen L:

Origin of the Coronas in the Mafic Granulite Xenoliths from Hannuoba, Northern Sino-Korean Craton
Programme for the Next Session in Symposium N




Symposium O

Analytical Techniques

Convenor: Nigel Harris.

Location: Inorganic Chemistry.

09:00 O'Nions RK, Zhu XK, Guo Y & Matthews A:

Fractionation of Heavier Stable Isotopes in Planetary Processes

09:15 Bailey T, Thirlwall M & McArthur J:

The Potential of Laser Ablation Multiple-Collector ICP-MS in Strontium Isotope Stratigraphy

09:30 Hellstrom J:

Accurate Measurement of Uranium and Thorium Isotopic Ratios in Low-uranium Natural Carbonates Using Multi-collector ICP-MS

09:45 Halliday A, Rehkämper M, Schönbächler M, Oberli F, Freedman P, Frank M, Müller W, Teutsch N, Baur H & Wiechert U:

MC-ICPMS ­ The Good, the Small and the Massive

10:00 Horstwood M, Parrish R, Nowell G & Noble S:

Further Advances in U-Th-Pb LA-PIMMS

10:15 Kossler J, Cox R, Sylvester P, Wilton D, Stein H & Schersten A:

Laser Ablation ICP-MS Analysis of Molybdenites ­ Implications for Re-Os Geochronology

10:30 Schwieters J, Hamester M, Jung G, Pesch R, Rottmann L, Tuttas D & Wills J:

Neptune: A new High Precision Multicollector ICP Mass Spectrometer

10:45 Yin Q & Lee C:

Plasma Centrifuge and Isotopic Fractionation in MC-ICP-MS

11:00 Pearson NJ, Alard O, Griffin WL, Graham S & Jackson SE:

LAM-MC-ICPMS Analysis of Mantle-derived Sulfides: The Key to Re-Os Systematics of Mantle Peridotites

11:15 Thirlwall M:

Precise Pb Isotope Analysis of Standards and Samples Using an Isoprobe Multicollector ICP-MS: Comparisons with Doublespike Thermal Ionization Data

11:30 Palacz Z, Turner P & Meffan-Main S:

Ultra High Nd Isotope Ratio Precisions ­ The Limit of Exponential Mass Fractionation Correction

11:45 Vance D & Thirwall M:

Precise and Accurate Neodymium Isotopic Analysis of Sub-5ng Samples by MC-ICPMS
Programme for the Next Session in Symposium O



Back to Goldschmidt 2000 Programme Overview

Cambridge Publications

PO Box 27, Cambridge CB1 8TR, U.K.

Gold2000@campublic.co.uk