Fax: 206-543-0489 (shared)
Interests: Physical Petrology
Research Groups: Petrology/Mineralogy/Geochemistry, Structural Geology, Tectonics and Geodynamics, Volcanology
Ph.D., Earth and Planetary Sciences, The Johns Hopkins University, 1988
M.S., Geophysics, Georgia Institute of Technology, 1985
- Zack McIntire, Crystal rich dynamics and melt-crystal extraction from deep arc crust
Physical Petrology Group Website
Bergantz's interests are in the quantitative treatment of geologic transport processes at a variety of scales and in a variety of settings. The physical petrology group has as its main emphasis the physics of magmas, hydrothermal systems, metamorphism and eruption processes. The students develop and use a diverse suite of tools to address these systems: numerical and laboratory experiments, geological and geophysical measurements, and the theoretical foundations of physical chemistry and continuum mechanics. All students are encouraged to do fieldwork and to develop transport models in a sensible geological context.
The projects currently underway address the geological expression of magmatism at different crustal levels. These studies provide complementary elements for the view that the generation of petrologic diversity and magmatism is a crustal-scale process. To this end, the group is working on tying together the process of melt generation and transport in the deep crust and mantle, the ascent and hybridization of magmas in the mid-crust and the assembly and life-cycles of volcanic systems. One of the most challenging aspects of this program is identifying elements from the geological record that are diagnostic of the time and length scales of magmatism.
Bergantz, G.W., Schleicher, J.M. and Burgisser, A., 2017, On the kinematics and dynamics of crystal-rich systems, J. Geophysical Research Solid Earth, v. 122, doi: 10.1002/2017JB014218
Bergantz, G. W., Schleicher, J. M., Burgisser, A., 2015, Open-system dynamics and mixing in magma mushes, Nature Geoscience, vol. 8, no. 10, p. 793-796.
Walker, Barry A., Bergantz, George W., Otamendi, Juan E., Ducea, Mihai N., Cristofolini, Eber A., 2015, A MASH Zone Revealed: the Mafic Complex of the Sierra Valle Fértil, Journal of Petrology, vol. 56, no. 9, p. 1863-1896.
Ducea, M. N., Saleeby, J. B., Bergantz, G. W., 2015, The Architecture, Chemistry, and Evolution of Continental Magmatic Arcs, Annual Review of Earth and Planetary Sciences, vol. 43, p. 299-331.