• URANIUM CO-PRECIPITATION WITH IRON OXIDE MINERALS 

  Duff M.C.; Coughlin J.U.; Hunter D.B. (2002)

  In oxidizing environments, the toxic and radioactive element uranium (U) is most soluble and mobile in the hexavalent oxidation state. Sorption of U(VI) on Fe-oxides minerals (such as hematite [α-Fe2O3] and goethite ...
• ANALOGUE MODELS OF OROGENIC WEDGES CONTROLLED BY EROSION 

  Persson K.S.; Sokoutis D. (2002)

  Indentation in the upper brittle crust where one plate is stiffer than the other produces vertical extrusion of a doubly vergent orogenic wedge. Sandbox models of this process show that erosion with or without deposition ...
• THE EFFECT OF H2O ON CRYSTAL-MELT PARTITIONING OF TRACE ELEMENTS 

  Wood B.J.; Blundy J.D. (2002)

  Many experimental data demonstrate distinct differences between crystal-liquid partition coefficients Di measured under high temperature, anhydrous conditions and those determined at lower temperatures in the presence of ...
• PRESERVATION OF ORGANIC MATTER AND ALTERATION OF ITS CARBON AND NITROGEN ISOTOPE COMPOSITION DURING SIMULATED AND IN SITU EARLY SEDIMENTARY DIAGENESIS 

  Lehmann M.F.; Bernasconi S.M.; Barbieri A.; McKenzie J.A. (2002)

  The carbon and nitrogen isotope composition of organic matter has been widely used to trace biogeochemical processes in marine and lacustrine environments. In order to reconstruct past environmental changes from sedimentary ...
• STOCHASTIC THERMAL HISTORY MODELLING. 1. CONSTRAINING HEAT FLOW HISTORIES AND THEIR UNCERTAINTY 

  Ferrero C.; Gallagher K. (2002)

  We introduce a novel application of the Markov Chain Monte Carlo (MCMC) method to address the problem of characterising uncertainties in modelled thermal histories. As real data are never perfect, uncertainties in measurement ...
• A SPECTROPHOTOMETRIC STUDY OF AQUEOUS COPPER(I)-CHLORIDE COMPLEXES IN LICL SOLUTIONS BETWEEN 100 °C AND 250 °C 

  Liu W.; Brugger J.; McPhail D.C.; Spiccia L. (2002)

  Copper transport and deposition in highly saline hydrothermal fluids are controlled by the stability of copper(I) complexes with ligands such as chloride and hydrosulphide. However, our understanding of the behavior of ...
• ICHTHYOLITH STRONTIUM ISOTOPE STRATIGRAPHY OF A NEOGENE RED CLAY SEQUENCE: CALIBRATING EOLIAN DUST ACCUMULATION RATES IN THE CENTRAL NORTH PACIFIC 

  Gleason J.D.; Moore T.C.; Rea D.K.; Johnson T.M.; Owen R.M.; Blum J.D.; Hovan S.A.; Jones C.E. (2002)

  Cenozoic pelagic ('red') clays of predominantly eolian and hydrogenous origin blanket much of the central North Pacific ocean basin. The eolian component is a key indicator of past paleoclimatic conditions; thus, Cenozoic ...
• FLUCTUATION OF BIOGENIC AND ABIOGENIC SEDIMENTATION ON THE SHATSKY RISE IN THE WESTERN NORTH PACIFIC DURING THE LATE QUATERNARY 

  Maeda L.; Kawahata H.; Nohara M. (2002)

  Sedimentation of biogenic and abiogenic components was studied in cores NGC108 (36°36.85'N, 158°20.90'E; water depth 3390 m) and S2612 (32°19.84'N, 157°51.00'E; water depth of 2612 m) from the Shatsky Rise to understand ...
• A CONTINUUM MECHANICS MODEL FOR NORMAL FAULTING USING A STRAIN-RATE SOFTENING RHEOLOGY: IMPLICATIONS FOR THERMAL AND RHEOLOGICAL CONTROLS ON CONTINENTAL AND OCEANIC RIFTING 

  Behn M.D.; Lin J.; Zuber M.T. (2002)

  We use a strain-rate-dependent visco-plastic rheology in a finite element model to investigate the effects of crustal rheology and thermal structure on the development of normal faults in 2-D extending lithosphere. Strain-rate ...
• INTERACTION OF FAULTS AND PERTURBATION OF SLIP: INFLUENCE OF ANISOTROPIC STRESS STATES IN THE PRESENCE OF FAULT FRICTION AND COMPARISON BETWEEN WALLACE-BOTT AND 3D DISTINCT ELEMENT MODELS 

  Pascal C. (2002)

  Two decades after their birth, the validity of fault slip inversion methods is still strongly debated. These methods are based upon a very simplified mechanical background, the Wallace-Bott hypothesis. Following previous ...
• CAN UNBIASED SOURCE BE RETRIEVED FROM ANISOTROPIC WAVEFORMS BY USING AN ISOTROPIC MODEL OF THE MEDIUM? 

  Sleny J.; Vavrycuk V. (2002)

  Anisotropy is frequently present in geological structures, but usually neglected when source parameters are determined through waveform inversion. Due to the coupling of propagation and source effects in the seismic ...
• MICROBIAL RESPIRATION AND DIFFUSIVE TRANSPORT OF O2, 16O2, AND 18O16O IN UNSATURATED SOILS: A MESOCOSM EXPERIMENT 

  Hendry M.J.; Wassenaar L.I.; Birkham T.K. (2002)

  Although the flux of molecular O2 between the atmosphere and the subsurface is intrinsically linked to the net soil production of greenhouse gasses, few studies have focused on the controls affecting the isotopic composition ...
• THE USE OF UNIAXIAL RECORDINGS IN MOMENT TENSOR INVERSIONS FOR INDUCED SEISMIC SOURCES 

  Trifu C.I.; Shumila V. (2002)

  This study shows that the use of uniaxial recordings maintains the linear dependence of the low frequency displacements, with first polarities included, on the moment tensor components, and thus can be easily incorporated ...
• MOMENT TENSORS AND MICROMECHANICAL MODELS 

  Hazzard J.F.; Young R.P. (2002)

  A numerical modelling approach that simulates cracking and failure in rock and the associated seismicity is presented and a technique is described for quantifying the seismic source mechanisms of the modelled events. The ...
• PHASE EQUILIBRIA OF THE SYSTEM METHANE-ETHANE FROM TEMPERATURE SCALING GIBBS ENSEMBLE MONTE CARLO SIMULATION 

  Zhang Z.; Duan Z. (2002)

  A new technique of temperature scaling method combined with the conventional Gibbs Ensemble Monte Carlo simulation was used to study liquid-vapor phase equilibria of the methane-ethane (CH4-C2H6) system. With this efficient ...
• THREE-DIMENSIONAL IMAGING OF PORE WATER DIFFUSION AND MOTION IN POROUS MEDIA BY NUCLEAR MAGNETIC RESONANCE IMAGING 

  Herrmann K.H.; Pohlmeier A.; Gembris D.; Vereecken H. (2002)

  We report on the use of a pulsed gradient spin-echo imaging sequence for the three-dimensional (3D) imaging of water transport properties in two porous media: 2mm glass-beads and 0.15mm quartz-sand mixed with 2mm glass-beads. ...
• USING X-RAY COMPUTED TOMOGRAPHY IN HYDROLOGY: SYSTEMS, RESOLUTIONS, AND LIMITATIONS 

  Wildenschild D.; Vaz C.M.P.; Rivers M.L.; Rikard D.; Christensen B.S.B. (2002)

  A combination of advances in experimental techniques and mathematical analysis has made it possible to characterize phase distribution and pore geometry in porous media using non-destructive X-ray computed tomography (CT). ...
• LITHOSPHERIC GROWTH AT MARGINS OF CRATONS 

  Snyder D.B. (2002)

  Deep seismic reflection profiles collected across Proterozoic-Archean margins are now sufficiently numerous to formulate a consistent hypothesis of how continental nuclei grow laterally to form cratonic shields. This picture ...
• ANALYSES OF SOIL WATER CONTENT VARIATIONS AND GPR ATTRIBUTE DISTRIBUTIONS 

  Schmalz B.; Lennartz B. (2002)

  Water flux was investigated in the frame of the project 'preferential flow paths-3D water and solute dynamic in heterogeneous media'. The objective of the study was the non-destructive three-dimensional monitoring and ...
• FORMATION OF GAS AND ICE GIANT PLANETS 

  Boss A.P. (2002)

  Agreement about planetary formation processes deteriorates sharply with distance from the Sun. While the terrestrial planets are widely believed to have formed from the collisional accumulation of solid bodies, there are ...

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