Mark E. Zimmerman
Ph.D., 1999, University of Minnesota
B.S., Geology, 1990, University of Minnesota; B.S., Zoology, 1983, George Washington University
|My research combines rock physics, material science and planetary geology. Through field work, experiments and theory, I have studied two-phase flow of materials, the interactions of melt migration and deformation and the influences of melt, water, and chemical environment on the mechanical properties of rocks in the deep Earth, Venus and Mars. Currently, my work is focused on the importance of a deformation regime for olivine in which grain boundary sliding and dislocation motion operate in unison. This deformation regime is potentially a dominant deformation mechanism in Earth's mantle, however, the dependencies of viscosity on stress, temperature, and grain size have not been well characterized.|
|GEO 1001: Introduction to Geology||GEO 5201: Structural Geology|
 "Experimental Deformation of Dry Columbia Diabase: Implications for Tectonics on Venus", S.J. Mackwell, M.E. Zimmerman, D.L. Kohlstedt and D.S. Scherber, in Rock Mechanics: Proceedings of the 35th U.S. Symposium, eds. J.J.K. Daemen and R.A. Schultz, A.A. Balkema, Rotterdam, 207-214 (1995).
 "Rheology of Partially Molten Mantle Rocks" D.L. Kohlstedt and M.E. Zimmerman, Annu. Rev. Earth Planet. Sci., 24, 41-62 (1996).
 "High Temperature Deformation of Dry Diabase with Application to Tectonics on Venus", S.J. Mackwell, M.E. Zimmerman and D.L. Kohlstedt, J. Geophys. Res.103 975-984 (1998).
 "Shear Deformation of Mantle Materials: Towards Structural Geology of the Mantle", S. Karato, S. Zhang, M.E. Zimmerman, M.J. Daines and D.L. Kohlstedt, Pure appl. geophys. 14, 589-603 (1998).
 "Melt Distribution in Mantle Rocks Deformed in Shear", M.E. Zimmerman, S. Zhang, D.L.Kohlstedt, and S. Karato, Geophys. Res. Lett. 26, 1505-1508 (1999).
 "Structure and Chemistry of Grain Boundaries in Deformed Olivine + Basalt and Partially Molten Lherzolite Aggregates: Evidence of Melt-free Grain Boundaries," T. Hiraga, I.M. Anderson, M.E. Zimmerman, S. Mei, and D.L. Kohlstedt, Contrib. Mineral. Petrol., 144, 163-175 (2002).
 "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).
 "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).
 "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).
 "Experimental Deformation of Olivine Single Crystals at Lithospheric Temperatures", S. Demouchy, S.E. Schneider, S.J. Mackwell, M.E. Zimmerman, and D.L. Kohlstedt, Geophys. Res. Lett. 36, L04304, doi:10.1029/2008GL036611 (2009).
 "Effect of Iron Content on the Creep Behavior of Olivine: 1. Anhydrous Conditions", Y.-H. Zhao, M.E. Zimmerman, and D.L. Kohlstedt, Earth Planet. Sci. Lett. 287, 229-240 doi:10.1016/j.epsl.2009.08.006 (2009).
 "Stress-driven Melt Segregation in Partially Molten Feldspathic Rocks," D.L. Kohlstedt, M.E.Zimmerman, and S.J. Mackwell, J. Petrol. 52, 9-19, doi: 10.1093/petrology/egp043 (2010).
 "Stress-driven Melt Segregation in Partially Molten Rocks Deformed in Torsion," D.S. King, D.L. Kohlstedt, and M.E. Zimmerman, J. Petrol. 52, 21-42, doi:10.1093/petrology/egp062 (2010).
|Professional Memberships||American Geophysical Union|