Dr. Caleb Holyoke
Title: Assistant Professor
Office: CRH 218
Assistant Professor, University of Akron, August 2014 to date
Assistant/Associate Research Scientist, Texas A&M University, August 2007 to July 2014
Visiting Scholar, University of Tennessee, Knoxville, August 2006 to July 2007
Post-doctoroal Scholar, University of Wisconsin, Madison, August 2005 to July 2006
Lecturer, University of Rhode Island, July to August 2005/2006
Geologist/Project Manager, MARCOR Environmental Services, Inc., November 1994 to August 1998
My research and teaching interests are in the general area of structural geology applied to solving problems related to the physical and chemical evolution of the Earth’s crust and upper mantle. In my research, I use a combination of active testing of how changing variables such as temperature and strain rate affects the microstructures that develop due to specific deformation mechanisms and observational analysis of naturally deformed rocks to constrain the conditions that produce these same microstructures in nature. Understanding these grain-scale processes contributes to our understanding of larger scale processes and controls on plate tectonics.
I am currently working on an NSF-funded experimental study on the water fugacity dependence of single crystals and polycrystalline aggregates of quartz in collaboration with Drs. Andreas Kronenberg and Junichi Fukuda of Texas A&M University. My students, Paul Krasner and Edward Poston, and I are deforming single crystals of quartz to determine how water fugacity, strain rate and temperature affect the strength of each of the common slip systems in quartz. These data will allow us to develop predictive models of the conditions that will determine the behavior of quartz-rich rocks in nature, which affects the strength of the Earth’s crust and loading during the seismic cycle.
Holyoke, C. W., Kronenberg, A., Newman, J. and Ulrich, C., In press, Rheology of magnesite, Journal of Geophysical Research, DOI: 10.1002/2013JB010541.
Holyoke, C. W., Kronenberg, A., Newman, J., In Press, Microstructural evolution during strain localization in dolomite aggregates, Journal of Structural Geology, DOI: 10.1016/j.jsg.2014.04.008.
Holyoke, C. W. and Kronenberg, A., 2013, Reversible water weakening of quartz, Earth and Planetary Science Letters, v. 347, p. 185-190, DOI: 10.1016/j.epsl.2013.05.039.
Ratteron, P., Merkel, S., Holyoke, C. W., 2013, Axial temperature gradient and stress measurements in the deformation-DIA cell using alumina pistons, Review of Scientific Instruments, v. 84, 043906; DOI: 10.1063/1.4801956.
Holyoke, C. W., Kronenberg, A., Newman J., 2013, Dislocation creep of polycrystalline dolomite, Tectonophysics, v. 590, p. 72-82, DOI: 10.1016/j.tecto.2013.01.011
Stewart, E., Holyoke, C. W., Kronenberg, A., 2013, High pressure deformation experiments using solid confining media and Griggs piston-cylinder methods: appraisal of stress and deformation in talc assemblies, Tectonophysics, v. 588, p. 171-178, DOI: 10.1016/j.tecto.2012.12.004
Girard, J., Chen, J., Ratteron, P., Holyoke, C. W., 2013, The effect of hydroxyls on olivine deforming by dislocation creep: rheology of single crystals oriented for (010) slip, Physics of the Earth and Planetary Interiors, v. 216, p. 12-20, DOI: 10.1016/j.pepi.2012.10.009
Holyoke, C. W. and Kronenberg, A., 2010, Accurate differential stress measurement using the molten salt cell and solid salt assemblies in the Griggs apparatus with applications to strength, piezometers and rheology, Tectonophysics, v. 494, no. 1-2, p. 17-31, DOI: 10.1016/j.tecto.2010.08.001.
Girard, J., Chen, J., Raterron, P., Holyoke, C. W., 2010, Deformation of single crystal sample using D-DIA apparatus coupled with synchrotron X-rays: In situ stress and strain measurements at high pressure and temperature, Journal of Physics and Chemistry of Solids, v. 71, no 8, p. 1053-1058, DOI: 10.1016/j.jpcs.2010.03.005.
Webber, C., Holyoke, C. W., Newman, J. Little, T., Tikoff, B., 2010, Fabric development in cm-scale shear zones, Red Hills, New Zealand, Tectonophysics, v. 489, no. 1-4, p. 55-75, DOI: 10.1016/j.tecto.2010.04.001.
Holyoke, C. W. and Tullis J., 2006, The interaction between reaction and deformation: an experimental study using a biotite + plagioclase + quartz gneiss, Journal of Metamorphic Geology, v. 24, no. 8, p. 743 – 762, DOI: 10.1111/j.1525-1314.2006.00666.x.
Holyoke, C. W. and Tullis J., 2006, Mechanisms of weak phase interconnection and the effects of phase strength contrast, Journal of Structural Geology, v. 28, no. 4, p. 621-640, DOI: 10.1016/j.jsg.2006.01.008.
Holyoke, C. W. and Tullis J., 2006, Formation and maintenance of shear zones, Geology, v. 34, no. 2, p 105-108, DOI: 10.1130/G22116.1.
Holyoke, C. W. and Rushmer, T., 2002, An experimental study of grain scale melt segregation mechanisms in two common crustal rock types, Journal of Metamorphic Geology, v. 20, no. 5, p. 493-512, DOI: 10.1046/j.1525-1314.2002.00381.x.
- Ph.D., Geology, Brown University, 2005
- M.S., Geology, University of Vermont, 2000
- B.S., Geology, James Madison University, 1994