Dr. Gregory Dumond
21 Gearhart Hall
|Dr. Dumond joined the faculty of the Geology division of Geosciences in August 2010, following a two-year NSF postdoctoral fellowship in the EAPS Isotope Lab at the Massachusetts Institute of Technology. His main research interests include structural geology, tectonics, metamorphic petrology, and geochronology. He is particularly interested in the tectonic and petrologic evolution of continental lithosphere. One of the principal focuses of his current research involves understanding the roles of strain partitioning, crustal flow, and partial melting in continental lower crust. This research is carried out in a large exhumed exposure of lower crust in the Canadian Shield of northern Saskatchewan and the Northwest Territories, and new work has begun on middle crustal exposures in southwestern Montana.|
|Degrees||Ph.D. University of Massachusetts-Amherst, Geosciences, 2008|
|M.S. Texas Tech University, Geosciences, 2002|
|B.S. University of Texas at El Paso, Geological Sciences with Chemistry Minor, 2000|
|Continental Lower Crust and Orogenic Belts|
|Advanced Topics in Structural Geology and Metamorphic Petrology|
Dr. Dumond’s main research interests revolve around the tectonic evolution of continental crust. These interests include:
1) Elucidating the roles of strain partitioning, crustal flow, and partial melting in continental middle to lower crust (~12 km to Moho-paleodepths);
2) Constraining links between deformation and metamorphism, and;
3) Developing monazite and zircon as tools for directly dating syn-kinematic deformation, garnet growth, melting, and dissolution/re-precipitation events in continental crust.
Projects commonly involve detailed outcrop- to regional-scale field mapping and cross-section construction (in beautiful country!), microstructural analysis, scanning electron microscope and electron probe microanalysis, and geochronology. At the University of Arkansas, we are currently pursuing a laser ablation system through the National Science Foundation to complement our existing Nu Plasma HR MC-ICP-MS and Thermo Scientific iCAP Q ICP-MS systems.
|Professional Biography||Gregory Dumond has been an assistant professor at the University of Arkansas since August 2010. Prior to this appointment, he was a NSF Earth Sciences Postdoctoral Fellow in the Isotope Lab with Samuel A. Bowring at MIT (2008-2010). He received outstanding guidance from a number of mentors during his formal education (1994-2008), including Michael L. Williams, Michael J. Jercinovic, and Sheila J. Seaman (University of Massachusetts), Calvin G. Barnes and Aaron S. Yoshinobu (Texas Tech University), Christopher L. Andronicos (now at Purdue University), Tom Williams (now at the University of Idaho), and Philip C. Goodell (University of Texas at El Paso).|
Calvin E. Johnson, Jr., M.S. anticipated May 2016, University of Arkansas, “Implications for the lower crustal 7.xx km/s layer from an exhumed crustal root, western Canadian Shield.” Winner of a 2015 NSF Graduate Fellowship based on this project.
Dustin D. Ply, M.S. anticipated May 2016, University of Arkansas, “Partial melting and strain localization in a Canadian analog for Tibetan lower continental crust.”
Rachel V. Keng, M.S., 2011, University of Arkansas, “Field-based constraints on the origin of the Benton uplift, Ouachita Mountains.” Now employed with Chesapeake Energy, Oklahoma City, OK.
Justin Palmer, B.S., 2011, University of Arkansas, Undergraduate Field Assistant. Earned M.S. at Colorado School of Mines with Dr. Yvette Kuiper. Now employed with Chevron, Houston, TX.
Karen N. Mason, M.S., 2013, University of Arkansas, “A geomechanical investigation of the Mississippian Boone formation.” Now employed with ConocoPhillips, Houston, TX.
Lane M. Boyer, M.S., 2013, University of Arkansas, “Insights into the timing, origin, and deformation of the Highland mountains gneiss dome in southwestern Montana, USA.” Now employed with Southwestern Energy, Houston, TX.
Born in New Brunswick, Canada, and raised in the west Texas town of El Paso, Dumond received his education and formal training at the University of Texas at El Paso, Texas Tech University, and the University of Massachusetts-Amherst. He has explored various aspects of structural geology, metamorphic/igneous petrology, Precambrian geology, and geochronology in the American Southwest (west Texas, New Mexico, and Arizona), the Canadian Shield (Saskatchewan and Northwest Territories), and the Scandinavian Caledonides (Norway).
15. Dumond, G., Goncalves, P., Williams, M.L., and Jercinovic, M.J., 2015. Monazite as a monitor of melting, garnet growth, and feldspar recrystallization in continental lower crust. Journal of Metamorphic Geology, vol. 33, no. 7, 735-762. http://onlinelibrary.wiley.com/doi/10.1111/jmg.12150/abstract
14. Williams, M.L., Dumond, G., Mahan, K.H., Regan, S.P., and Holland, M., 2014. Garnet-Forming Reactions in Felsic Orthogneiss: Implications for Densification and Strengthening of the Lower Continental Crust. Earth & Planetary Science Letters, vol. 405, 207-219.
13. Leslie, S.R., Mahan, K.H., Regan, S., Williams, M.L., and Dumond, G., 2014. Contrasts in sillimanite deformation in felsic tectonites from anhydrous granulite- and hydrous amphibolite-facies shear zones, western Canadian Shield. Journal of Structural Geology, vol. 71, 112-124.
12. Dumond, G., Mahan, K.H., Williams, M.L., and Jercinovic, M.J., 2013. Transpressive uplift and exhumation of continental lower crust revealed by syn-kinematic monazite reactions. Lithosphere, vol. 5, 507-512. http://lithosphere.geoscienceworld.org/content/5/5/507.short
11. Hetherington, C.J., and Dumond, G., 2013. Versatile monazite: a mineral for resolving complex geological records and challenges in materials science. American Mineralogist, vol. 98, no. 5-6, 817-818. http://ammin.geoscienceworld.org/content/98/5-6/817.short
10. Karlstrom, K.E., Ilg, B.R., Hawkins, D., Williams, M.L., Dumond, G., Mahan, K.H., and Bowring, S.A., 2012. Vishnu basement rocks of the Upper Granite Gorge: Continent formation 1.8 to 1.6 billion years ago. in Timmons, J.M., and Karlstrom, K.E., eds., Grand Canyon Geology: Two Billion Years of Earth’s History.Geological Society of America Special Paper, vol. 489, 7-24. http://specialpapers.gsapubs.org/content/489
9. Mahan, K.H., Smit, A., Williams, M.L., Dumond, G., and Van Reenen, D.D., 2011. Heterogeneous strain and polymetamorphism in high-grade terranes: Insight into crustal processes from the Athabasca Granulite Terrane, western Canada and Limpopo Complex, southern Africa. in McCourt, S., Kramers, J., and Van Reenen, D.D., eds., Origin and evolution of Precambrian high-grade gneiss terranes, with special emphasis on the Limpopo Complex of southern Africa.Geological Society of America Memoir, vol. 207, 269-287. http://memoirs.gsapubs.org/content/207/269.short
8. Koteas, G.C., Williams, M.L., Seaman, S.J., and Dumond, G., 2010. Granite genesis and mafic-felsic magma interaction in the lower crust. Geology, vol. 38, no. 12, 1067-1070. http://geology.gsapubs.org/content/38/12/1067.short
7. Dumond, G., Goncalves, P., Williams, M.L., and Jercinovic, M.J., 2010. Sub-horizontal fabric in exhumed continental lower crust and implications for lower crustal flow: Athabasca granulite terrane, western Canadian Shield. Tectonics, vol. 29, doi: 10.1029/2009TC002514. http://onlinelibrary.wiley.com/doi/10.1029/2009TC002514/full
6. Williams, M.L., Karlstrom, K.E., Dumond, G., and Mahan, K.H., 2009. Perspectives on the architecture of continental crust from integrated studies of exposed isobaric sections.in Miller, R.B., and Snoke, A.W., eds., Crustal Cross Sections from the Western North American Cordillera and Elsewhere: Implications for Tectonic and Petrologic Processes. Geological Society of America Special Paper, vol. 456, 219-241. http://specialpapers.gsapubs.org/content/456/219.short
5. Dumond, G., McLean, N., Williams, M.L., Jercinovic, M.J., and Bowring, S.A., 2008. High-resolutiondating of granite petrogenesis and deformation in a lower crustal shear zone: Athabasca granulite terrane, western Canadian Shield. Chemical Geology, vol. 254, 175-196.
4. Budzyń, B., Hetherington, C.J., Williams, M.L., Jercinovic, M.J., Dumond, G., and Michalik, M., 2008. Application of electron probe micro-analysis U-Th-total Pb geochronology to provenance studies in sedimentary rocks: An example from the Carpathian Flysch. Chemical Geology, vol. 254,148-163.
3. Dumond, G., Mahan, K.H., Williams, M.L., and Karlstrom, K.E., 2007. Crustal segmentation, composite looping pressure-temperature paths, and magma-enhanced metamorphic field gradients: Upper Granite Gorge, Grand Canyon, USA. Geological Society of America Bulletin, vol. 119, no. 1/2, 202-220. http://gsabulletin.gsapubs.org/content/119/1-2/202.short
2. Dumond, G., Yoshinobu, A.S., and Barnes, C.G., 2005. Mid-crustal emplacement of the Sausfjellet pluton, central Norway: Ductile flow, stoping, and in situ assimilation. Geological Society of America Bulletin, vol. 117, no. 3/4, 383-395.
http://gsabulletin.gsapubs.org/content/117/3-4/383.short 1. Barnes, C.G., Dumond, G., Yoshinobu, A.S., Prestvik, T., 2004. Asymmetric zoning of a middle crustal pluton in the Norwegian Caledonides: Selective assimilation of host rocks. Lithos, vol. 75, no. 3-4, 389-412.
In Review for 2016-2019 National Science Foundation EAR-IF #1561166 - $579,222. Lead-PI. “Early Career: Acquisition of a laser ablation system to enable new constraints on continental crust, dinosaurs, and ore deposits.” University of Arkansas. Submitted 4 September 2015.
2013-2018 National Science Foundation CAREER EAR #1255277 - $453,456. Sole PI. “CAREER: Understanding Major Intracontinental Strike-Slip Faults from the Lower Crust’s Perspective: Tibetan insights from the Canadian Shield.” University of Arkansas. http://www.nsf.gov/awardsearch/showAward?AWD_ID=1255277
2011-2012 U.S. Geological Survey EDMAP Program - $13,000. Co-PI.
“Mapping the margins of a paleo-alluvial fan to determine the extent, origin, and timing of the fan and adjacent basins: Rocky Mountains, Montana, USA.” University of Arkansas.
2008-2010 National Science Foundation Postdoctoral Fellowship EAR-PF #0816394 - $160,000. Sole PI. “Nanochronology and Moho topography: Towards precise and accurate constraints on the evolution of North American continental lithosphere.”MIT. http://www.nsf.gov/awardsearch/showAward?AWD_ID=0816394
2006-2008 National Science Foundation EAR #0609935 - $203,463.
“Collaborative Research: Lower crustal flow, shallow fabric development, and craton assembly - East Athabasca Granulite Terrane, Canada.” Co-wrote and illustrated proposal under PIs Michael L. Williams (UMass) and Samuel A. Bowring (MIT).
2006 Mineralogical Society of America Grant for Student Research in Mineralogy and Petrology - $5,000. Sole PI. “What are we dating?: Linking zircon growth to metamorphic reactions in HP-mafic granulite.” UMass. http://www.minsocam.org/msa/Awards/Min_Pet_Award.html
2005 Geological Society of America Graduate Student Research Grant - $1,200. Sole PI. “Shallow Fabric Development in an Exposure of Lower Continental Crust: Implications for Lower Crustal Flow, Snowbird Tectonic Zone, Canada.” UMass.