Previous page     Contents     Next page

Contents
 
Foreword 
 
1. Advisory Board and Management
  1.1 Advisory Board
  1.2 Management
 
2. Staff, Funding and Facilities
  2.1 Staff
  2.2 Funding
  2.3 Laboratory and office facilities
  2.4 Experimental equipment
 
3. Research Projects 
  3.1 Phase Transformations, Deformation and Properties of Mantle Minerals
 
a.
The nature of intracrystalline olivine - ringwoodite transformation and its implications for subduction (L. Kerschhofer, C. Dupas-Bruzek, D.C. Rubie and J.D.C. McConnell, in collaboration with T.G. Sharp/Tempe)
 
b.
Transformation and deformation of (Mg,Fe)2SiO4 olivine and wadsleyite under deep subduction zone conditions (C. Dupas-Bruzek and D.C. Rubie, in collaboration with T.G. Sharp/Tempe and W.B. Durham/Livermore)
 
c.
Effects of phase transformations on the mechanical evolution of subducting lithosphere (D.C. Rubie, L. Kerschhofer, J.L. Mosenfelder and C. Dupas-Bruzek, in collaboration with M. Liu/Cambridge, USA and T.G. Sharp/Tempe)
 
d.
Deformation of ringwoodite under transition zone conditions (S. Karato/Minneapolis, C. Dupas and D.C. Rubie)
 
e.
Viscoelastic relaxation of transformation stress: a new method for constraining the rheology of high pressure phases (J.L. Mosenfelder, D.C. Rubie and L. Kerschhofer, in collaboration with M. Liu/Cambridge, USA)
 
f.
Grain growth kinetics and microstructures in olivine-enstatite aggregates (T.F. Fliervoet and L.W. Finger, in collaboration with R.D. McDonnell/Utrecht)
 
g.
Fe-Mg interdiffusion in wadsleyite: first determination of diffusion rates in a high-pressure mantle silicate phase (S. Chakraborty/Köln, R. Knoche, H. Schulze, R.J. Angel and D.C. Rubie, in collaboration with D. Dobson and N.L. Ross/London)
 
h.
In-situ electrical conductivity measurements of olivine, wadsleyite and ringwoodite up to 1400°C and 20 GPa (Y. Xu, B.T. Poe D.C. Rubie and T.J. Shankland)
 
  3.2 Geochemistry at High Pressures and Temperatures
 
a.
Element partitioning between magnesiowüstite and silicate melt as a function of melt composition, temperature and pressure (C.K. Geßmann and D.C. Rubie, in collaboration with E. Ohtani/Sendai)
 
b.
Study of trace element partitioning between immiscible carbonate and silicate liquids in the rotating centrifuge autoclave (A.M. Dorfman, I.V. Veksler and D.B. Dingwell, in collaboration with G.A. Jenner and C. Petibon/St. John´s)
 
c.
Dissolution of orthopyroxene in Si-undersaturated alkaline melts from 1 atmosphere to 2.5 GPa: implications for the origin of Si-rich glass inclusions in mantle-derived xenoliths (C.S.J. Shaw, in collaboration with Y. Thibault, A.D. Edgar/London, Canada and F.E. Lloyd/Reading)
 
d.
Experiments in the vein plus wallrock system: implications for the origin of potassic and ultrapotassic magmas (C.S.J. Shaw, in collaboration with A.D. Edgar, C. Stanley/London, Canada and F.E. Lloyd/Reading)
 
  3.3 Crystal Chemistry and Structure
 
a.
New spinelloids in the system magnetite-fayalite (R.J. Angel, in collaboration with A.B. Woodland/Heidelberg)
 
b.
Effects of alumina on Fe3+ content in perovskites under lower mantle conditions (S. Lauterbach, C.A. McCammon and F. Seifert, in collaboration with P.A. van Aken/Darmstadt)
 
c.
High-pressure crystal chemistry of Cr2SiO4: Evidence for the presence of a binuclear [Cr2]4+ species in a silicate (R. Miletich, M. Nowak, F. Seifert and R.J. Angel, in collaboration with R. Stranger/Canberra, G. Brandstätter/Wien)
 
d.
The dynamic effect of Jahn-Teller distortion on symmetry and phase transitions in Mn3+ endmember garnets (R. Miletich, S. Heinemann and R.J. Angel, in collaboration with T. Armbruster and T. Arlt/Bern)
 
e.
Origin of the incommensurate structure in melilites (J.D.C. McConnell, R.J. Angel, C.A. McCammon and F. Seifert)
 
f.
Transformation of five-coordinate silicon to octahedral silicon in calcium silicate, CaSi2O5 (R.J. Angel)
 
g.
Densified GeO2 glass and pressure-amorphized quartz-GeO2 to 15 GPa: density and calorimetry results (B.T. Poe, in collaboration with P. Richet/Paris and G. Hovis, Easton)
 
h.
In-situ ultrasonic and X-ray measurements of a MgO single crystal in a diamond anvil cell (H.J. Reichmann and R.J. Angel, in collaboration with H. Spetzler/Boulder and W.A. Bassett/Ithaca)
 
i.
Effect of isovalent Si,Ti substitution on the bulk moduli of Ca(Ti1-xSix)SiO5 titanites (R.J. Angel, R. Miletich and R. Knoche, in collaboration with M. Kunz/Grenoble and A.B. Woodland and M. Koch/Heidelberg)
 
  3.4 Metamorphism at Different Time Scales
 
a.
Impact diamonds from the Popigai (Siberia) and Sudbury (Ontario) craters (F. Langenhorst, in collaboration with V.L. Masaitis and G.I. Shafranovsky/ St. Petersburg and R.A.F. Grieve/Ottawa)
 
b.
Shock metamorphism of impact breccias from the Chicxulub crater, Mexico (F. Langenhorst, in collaboration with P. Claeys, D. Stöffler/Berlin and A. Deutsch/Münster)
 
c.
Quantitative measurements of short compositional profiles in olivine using analytical transmission electron microscopy and low temperature (<900&deg;C) interdiffusion experiments (E. Meissner and F. Seifert, in collaboration with S. Chakraborty/Köln and T.G. Sharp/Tempe)
 
d.
Problems of diffusion modelling in natural garnets and implications (P.J. O´Brien)
 
e.
Fluid infiltration and the preservation of coesite (J.L. Mosenfelder, in collaboration with H.-P. Schertl/Bochum, J.R. Smyth/Boulder, J.G. Liou/Stanford and A. Wain /Oxford)
 
  3.5 Fluids and their Interaction with Silicate Melts and Minerals
 
a.
Partitioning of water between lower mantle phases (N. Bolfan-Casanova, H. Keppler and D.C. Rubie)
 
b.
The effect of chemical defects on water solubility in pyroxenes (M. Rauch and H. Keppler)
 
c.
Complete miscibility between magmas and hydrous fluids: evidence from diamond anvil cell experiments (H. Bureau and H. Keppler)
 
d.
Water speciation in rhyolite glass and melt (J. Sowerby and H. Keppler)
 
e.
Speciation of CO2 in silicate melts and glasses (M. Nowak and H. Keppler)
 
f.
The behaviour of sulfur during volcanic eruptions (H. Keppler)
 
  3.6 Melts Physics and Chemistry
 
a.
Neutron diffraction and reverse Monte Carlo studies of sodium tetrasilicate glass (N. Zotov and H. Keppler)
 
b.
The structural role of aluminium in highly polymerised calcium aluminosilicate melts: insights from shear viscosity measurements (D. B. Dingwell, in collaboration with M.J. Toplis/Vandoeuvre-lès-Nancy)
 
c.
The influence of nickel and cobalt on the density of silicate melts (P. Courtial and D.B. Dingwell, in collaboration with A. Holzheid/Cambridge, USA)
 
d.
Dilatometric and calorimetric studies on transition elements-bearing glasses (J. Gottsmann and D. B. Dingwell)
 
e.
Contrasting effects of F and Cl on alkaline melt viscosities (D.B. Dingwell and K.-U. Hess)
 
f.
The influence of melt structure on controlling the Zr/Hf ratio in zircon-hafnon and granitic rocks (R. Linnen and H. Keppler)
 
g.
The effect of Li on the solubility of Nb-Ta-Zr-Hf-W minerals in granitic melts (R. Linnen)
 
  3.7 Physics of Magmatic Systems
 
a.
Experimental studies on cooling rates of high-silica lava flows (J. Gottsmann and D.B. Dingwell)
 
b.
Fragmentation dynamics of the 1980 Mt. St. Helens cryptodome dacite rock (M. Alidibirov, D.B. Dingwell and O. Spieler)
 
c.
Systematic experimental investigation of vesiculated silicic magma fragmentation under rapid decompression (C. Martel, M. Alidibirov and D.B. Dingwell, in collaboration with M. Pichavant/Orléans)
 
d.
Merapi - microprobe-analysis and fragmentation results (O. Spieler, M. Alidibirov and D.B. Dingwell)
 
e.
Grain-size characteristics of experimental pyroclasts of 1980 Mt. St. Helens cryptodome dacite: effects of pressure drop and temperature (M. Alidibirov, O. Spieler and D.B. Dingwell)
 
  3.8 Methodological Developments
 
a.
Development of ultrasonic interferometry in the multi-anvil press (J. Kung, B.T. Poe, Y. Xu and D.C. Rubie)
 
b.
Dynamic (shock) deformation of olivine by ultra-short laser pulse experiments (F. Langenhorst, in collaboration with M. Boustie, A. Migault and J.P. Romain/Poitiers)
 
c.
Rare earth element analysis with the electron microprobe (V.v. Seckendorff)
 
d.
A new development for dilatometric measurements in an internally heated pressure vessel (C. Gennaro and D.B. Dingwell, in collaboration with M. Pichavant/Orléans)
 
e.
Advantages and limitations of image analysis: 2 dimensional approaches to 3 dimensional problems (O. Spieler and D.B. Dingwell)
 
f.
Analysis of fluid inclusions in doped haplogranitic glass by Laser Ablation ICP-MS (B. Schäfer and D.B. Dingwell, in collaboration with D. Günther and R. Frischknecht/Zürich)
 
g.
New Solid-State NMR Results (S. Dusold, X. Helluy, J. Kümmerlen, C. Marichal and A. Sebald)
 
4. Publications, Conference Presentations, Seminars, Visiting Scientists
  4.1 Publications (published)
  4.2 Publications (submitted, in press)
  4.3 Presentations at scientific institutions and at congresses
  4.4 Lectures and seminars at Bayerisches Geoinstitut
  4.5 Scientific conferences organized by/with assistance of Bayerisches Geoinstitut
  4.6 Visiting scientists
 
a.
Visiting scientists funded by the Bayerisches Geoinstitut
 
b.
Visiting scientists funded by EU Project "Access to Large Scientific Facilities"
 
c.
Visitors (externally funded)
  4.7 Theses
  4.8 Honours and awards
  4.9 Editorship of scientific journals
  4.10 Membership of scientific advisory bodies
  4.11 Public relations and press reports
 
5. Scientific and Technical Personnel
   

Bayerisches Geoinstitut, Universität Bayreuth, 95440 Bayreuth, Deutschland
Tel: +49-(0) 921 55 3700 / 3766, Fax: +49-(0) 921 55 3769, E-mail: bayerisches.geoinstitut(at)uni-bayreuth.de