Researchers

Earth sciences / KOHLSTEDT, DAVID L.

dlkohl

Position

I.T. Distinguished Professor
Department of Geology and Geophysics
University of Minnesota
Minneapolis, USA.

Research interests

- Role of water in diffusion, deformation and solid state reactions
- Rheology of lower crust/upper mantle materials
- Transport properties of partially molten rocks
- Rheology of partially molten rocks
- Melt migration and planetary core formation
- Rheological properties and planetary evolution
- Structure and properties of grain boundaries
- Rheology of Ice

His research explores the mechanical properties of rocks on Earth and other planets. Physical and chemical properties of rocks and minerals govern the geodynamic behavior and geochemical evolution of planetary bodies. Currently, with his students, he is uncovering spectacular effects of water and melt on viscosity of lower crustal and upper mantle rocks and finding enormous influences of water on diffusion in silicate minerals.

Prizes and awards

2000-present, Fellow, American Academy of Arts and Science
2003, Harry H. Hess Medal, American Geophysical Union
2004, Alumni Achievement Award, Valparaiso University
2005, Moore Distinguished Scholar, Geological and Planetary Sciences, Caltech
2005 Louis Néel Medalist of the European Geosciences Union

Publications

“Equilibrium Interface Segregation in the Diopside-Forsterite System I: Analytical Techniques, Thermodynamics, and Segregation Characteristics”, T. Hiraga and D.L. Kohlstedt, Geochimica et Cosmochimica Acta 71, 266-1280 (2007).

“Equilibrium Interface Segregation in the Diopside-Forsterite System II: Applications of interface enrichment to mantle geochemistry”, T. Hiraga, M.M. Hirschmann, and D.L. Kohlstedt, Geochim. Cosmochim. Acta 71, 1281-1289 (2007).

“Constitutive Equations, Rheological Behavior, and Viscosity of Rocks”, D.L. Kohlstedt, in Treatise on Geophysics, ed. G. Schubert, vol. 2, Mineral Physics, G. D. Price, Elsevier (2007).

“Strength and Deformation of Planetary Lithospheres”, D.L. Kohlstedt and S.J. Mackwell, in Planetary Tectonics, eds. R. Schultz and T. Waters, Cambridge University (2007).

“Influence of Hydrogen on Fe-Mg Interdiffusion in (Mg,Fe)O and Implications for Earth’s Lower Mantle”, S. Demouchy, S.J. Mackwell, and D.L. Kohlstedt, Contrib. Mineral. Petrol (2007).

“Stress-driven Melt Segregation and Strain Partitioning in Partially Molten Rocks: The Evolution of Melt Distribution–, B.K. Holtzmann and D.L. Kohlstedt, J. Petrol.(2007).

“An Experimental and Numerical Study of Surface Tension-Driven Melt Flow” R.A. Parsons, F.Nimmo, J.W. Hustoft, B.K. Holtzman, and D.L.Kohlstedt, Earth Planet. Sci. Lett. (2007).

“Effect of Metallic Melt on the Viscosity of Peridotite”, J.W. Hustoft, T. Scott, and D.L. Kohlstedt, Earth Planet. Sci. Lett. (2007).

“Dependence of Dunite Viscosity on Oxygen Fugacity”, J.W. Keefner, S.J. Mackwell , and D.L.Kohlstedt Earth Planet. Sci. Lett.(2007).

“Metal-Silicate Segregation in Deforming Dunitic Rocks”, J.W. Hustoft and D.L. Kohlstedt, Geochem., Geophys., Geosyst. 7, Q02001, doi:10.1029/2005GC001048 (2006).

“Deformation-induced Metal Melt Networks in Silicates: Implications for Core-mantle Interactions in Planetary Bodies”, N. Groebner and D.L. Kohlstedt, Earth Planet. Sci. Lett. 245, 571-580 (2006).

“Role of Dynamic Grain Boundary Wetting in Fluid Circulation Beneath Volcanic Arcs”, S. Hier-Majumder and D.L. Kohlstedt, Geophys. Res. Lett. 33, L08305, doi:10.1029/2006GL025716 (2006).

“The Effect of Large Melt Fraction on the Deformation Behavior of Peridotite”, T. Scott and D.L. Kohlstedt, Earth Planet. Sci Lett. 246, 177-187 (2006).

“Water Weakening of Clinopyroxene in the Dislocation Creep Regime”, S. Chen, T. Hiraga, and D. L. Kohlstedt, J. Geophys. Res., 111, B08203, doi:10.1029/2005JB003885 (2006).

“Water and Rock Deformation: The Case For and Against a Climb-controlled Creep Rate”, D.L. Kohlstedt, in Water in Nominally Anhydrous Minerals, eds. H. Keppler and J.R. Smyth, Reviews in Mineralogy and Geochemistry, vol. 62, Mineralogical Society of America, pp. 377-396 (2006).

“Influence of Protons on Fe-Mg Interdiffusion in Olivine”, S. Hier-Majumder, I. M. Anderson, and D. L. Kohlstedt, J. Geophys. Res., 110, B02202, doi:10.1029/2004JB003292 (2005).

“The Effect of Grain Size and Melt Distributions on the Rheology of Partially Molten Olivine Aggregates”, D. Bruhn, D.L. Kohlstedt, and K.-H. Lee in High Strain Zones: Structure and Physical Properties, eds. D. Bruhn and L. Burlini, Geological Society, London, Special Publications, 245, 291-302, (2005).

“Water Weakening of Clinopyroxene in the Diffusion Creep Regime”, S. Hier-Majumder, S. Mei, and D.L. Kohlstedt, J. Geophys. Res. 110, 1-12, B07406, doi:10.1029/2004JB003414 (2005).

“Viscous Energy Dissipation and Strain Partitioning in Partially Molten Rocks”, B.K. Holtzman, D.L. Kohlstedt, and J. Phipps Morgan, J. Petrol., 1-24 doi:10.1093/petrology/egi065 (2005).

“Textures in Experimentally Deformed Olivine Aggregates: The Effects of Added Water and Melt”, F. Heidelbaach, B. Holtzman, S. Hier-Majumder, and D. Kohlstedt, Materials Science Forum, 63-68 (2005).

“Partitioning in mantle rocks: grain boundaries as reservoirs of incompatible elements”, T. Hiraga, I.M. Anderson, and D.L. Kohlstedt, Nature, 427, 699-703 (2004).

“Deformation Behavior of Partially Molten Mantle Rocks”, Y. Xu, M.E. Zimmerman and D.L. Kohlstedt, Rheology and Deformation of the Lithosphere at Continental Margins: MARGINS Theoretical and Experimental Earth Science Series. Volume I eds. G.D. Karner, N.W. Driscoll, B. Taylor and D.L. Kohlstedt, Columbia University Press, 284-310, (2004).

“Rheological Properties of Partially Molten Lherzolite”, M.E. Zimmerman and D.L. Kohlstedt, J. Petrol., 45, 275-298 (2004).

“Solubility of Hydrogen in Olivine: Effects of Temperature and Fe Content”, Y.H. Zhao, S.G. Ginsberg, and D.L. Kohlstedt, Contrib. Mineral. Petrol., 147,155-161, DOI:10.1007/s00410-003-0524-4 (2004).

“Effect of H+ on Fe-Mg Interdiffusion in Olivine, (Mg,Fe)2SiO4”, Z. Wang, T. Hiraga, and D.L. Kohlstedt, Appl. Phys. Lett., 85, 209-211 (2004).

“On Grain Boundary Wetting During Deformation”, S. Hier-Majumder, P.H. Leo, D.L. Kohlstedt, Acta Mater. 52. 3425-3433 (2004).

“Deformation-driven Melt Segregation in Partially Molten Rocks,” B.K. Holtzman, N.J. Groebner, M.E. Zimmerman, S.B. Ginsberg, and D.L. Kohlstedt, Geochem., Geophys., Geosyst., 4, NO. 5, 8607, doi:10.1029/2001GC000258 (2003).

“Chemistry of Grain Boundaries in Mantle Rocks”, T. Hiraga, I.M. Anderson, and D.L. Kohlstedt, Amer. Min., 88, 1015-1019 (2003).

“Melt Segregation and Strain Partitioning: Implications for Seismic Anisotropy and Mantle Flow”, B.K. Holtzman, D.L. Kohlstedt, M.E. Zimmerman, F. Heidelbach, T. Hiraga, and J. Hustoft, Science, 301, 1227-1230 (2003).

“Rheology of the Upper Mantle and the Mantle Wedge: A View From the Experimentalists”, in Inside the Subduction Factory, Hirth, G., and D. Kohlstedt, edited by J. Eiler, Geophysical Monograph 138, 83-105, American Geophysical Union, Washington, D.C., (2003).