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Mark E. ZimmermanPh.D., 1999, University of Minnesota B.S., Geology, 1990, University of Minnesota; B.S., Zoology, 1983, George Washington University
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| I am currently investigating the effect of ilmenite on the strength of peridotites. There are indications that the evolution of the lunar mantle from a magma ocean produced ilmenite-cumulates that may have subsequently overturned and produced features observed on the surface of the moon. This overturn hypothosis has also been used to explain the brief existance of a lunar dynamo. Current theories rely on parameters either determined from elastic flexural models or from rheolgies determined from experiments on terrestrial mantle minerals and do not include the effects of minor phases such as the Ti-rich assemblages thought to be present in the lunar mantle. |
| GEO 1001: Introduction to Geology | GEO 5201: Structural Geology |
Zimmerman, M.E. and D.L. Kohlstedt, Rheological properties of partially molten lherzolite, J. Petrol. 45:275-298 (2004).
Xu, Y., M.E. Zimmermann, and D.L. Kohlstedt, Deformation behavior of partially molten mantle rocks, in Rheology and Deformation of the Lithosphere at Continental Margins, eds. G.D. Karner, N.W. Driscoll, B. Taylor and D.L. Kohlstedt, Columbia University Press, 284-310 (2004).
Holtzman, B.K., D.L. Kohlstedt, M.E. Zimmerman, F. Heidelbach, T. Hiraga, J. Hustoft, “Melt Segregation and Strain Partitioning: Implications for Seismic Anistropy and Mantle Flow”, Science, 301, 1227-1230 (2003).
Holtzman, B.K., N.J. Groebner, M.E. Zimmerman, S.B. Ginsberg and D.L. Kohlstedt, Deformation-driven melt segregation in partially molten rocks, Geochem., Geophys., Geosyst. 4, NO. 5, 8607, doi:10.1029/2001GC000258 (2003).
Hiraga, T., I.M. Anderson, M.E. Zimmerman, S. Mei, and D.L. Kohlstedt, Structure and Chemistry of Grain Boundaries in Deformed Olivine + Basalt and Partially Molten Lherzolite Aggregates: Evidence of Melt-free Grain Boundaries, Contrib. Mineral. Petrol., 144, 163-175 (2002).
Zimmerman, M.E., S. Zhang, D.L. Kohlstedt, and S. Karato, Melt Distribution in Mantle Rocks Deformed in Shear,, Geophys. Res. Lett. 26, 1505-1508 (1999).
| Professional Memberships | American Geophysical Union |
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