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Division of Seismology, Geology, and Tectonophysics |
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| Geodynamics
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(Top Panel) Thin section from experiment on deformation
of partially molten rocks representative of the Earth's
upper mantle. Experiment shows that melt (dark
regions) may organize into melt-rich networks, substantially
changing the nature of the deformation. (Bottom)
Numerical model of porosity development during shear
deformation, in an approximate simulation of the deformation
experiment from the top panel. Red depicts regions
of high porosity (melt), while blue colors depict melt-free
regions. For full details of this experiment,
see Katz et al., Nature, 676-679, 2006.
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Geodynamics research in SG&T is focused on understanding the forces that drive deformation and tectonism in the solid Earth, and the role that rock rheology, physical state (solid or partially molten), and composition play in controlling such deformation. The techniques include computational and laboratory studies of deformation and melt migration, and the application of observational geodetic and seismic techniques to probe these processes at the field scale. SG&T's geodynamicists collaborate closely with colleagues in Deep Earth Structure and Earthquake Faulting, as well as geodynamics researchers in Lamont's MG&G and Geochemistry divisions.
| Faculty and Scientists |
| James Gaherty, Doherty Research Scientist |
| Ben Holtzman, Doherty Associate Research Scientist |
| Mikhail Kogan, Doherty Research Scientist |
| William Menke, Professor, Earth and Environmental Sciences |
Meredith Nettles, Assistant Professor, Earth and Environmental Sciences
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| Leonardo Seeber, Doherty Senior Research Scientist |
| Marc Spiegelman, Associate Professor, Earth and Environmental Sciences |
| Grigory Steblov, Adjunct Research Scientist |
| Spahr Webb, Palisades Geophysical Institute Senior Research Scientist |
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| Graduate Students |
| Martin Collier |
| Ethan Coon |
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