Jason F. Thomason, Ph. D.
Associate Hydrogeologist
Hydrogeology and Geophysics Section
434 Natural Resources Building
615 E. Peabody Drive
Champaign, IL 61820
Phone: 217-244-2508 • Fax: 217-244-2785
E-mail:
jthomaso@illinois.edu
Research Interests
- Hydrogeologic variability within glacial deposits
- Glacial stratigraphy and sedimentology
- Laboratory and field studies of subglacial processes
- Geologic mapping of glaciated terrains
Current Projects
- 3D mapping/modeling of glacial deposits in Lake County, IL
- 3D mapping/modeling of glacial deposits in McHenry County, IL
- Regional geology of the Fox River Basin
Selected Publications
Abstracts
Thomason, J.F. and S.E. Brown, 2009, Interpreting subsurface glacigenic sequences: an example of using exposed ice-contact sediments as a model for mapping buried ice-margin deposits. North Central GSA Abstracts with Programs, Vol 41, No. 4, p. 71.
Carlock, D.R., Thomason, J.F., and Malone, D.H., 2009, 3-D mapping of the Quaternary glacial deposits in the Hebron Quadrangle, McHenry County, Illinois. North Central GSA Abstracts with Programs, vol. 41, no. 4, p. 14.
Curry, B.B., Brown, S.E., and Thomason, J.F., 2009, Determining sediment transport rates during deglaciation of the Lake Michigan Lobe, Northeastern Illinois. North Central GSA Abstracts with Programs, vol 41, no. 4, p. 58.
Fox, N.D., Thomason, J.F., Grimley, D., and Curry, B.B., 2009, Insights into the paleoenvironment of lacustrine sediments prior to the last glaciation at Wedron, Illinois. North Central GSA Abstracts with Programs, vol 41, no. 4, p. 71.
Thomason, J.F., M.L. Barnhardt, and B.J. Stiff, 2007, 3D Mapping of Glacigenic Deposits in Northeast Illinois: Integrating Modeling and Visualization Software, Databases, and Drilling, Abstract presented at the National GSA meeting in Denver, CO.
Iverson, N.R., J.F. Thomason, J.Shumway, T.S. Hooyer, F. LaGroix, M. Graesch, 2007, Testing the bed-deformation hypothesis using magnetic fabrics of tills sheared subglacially and experimentally, Abstract presented at the American Geophysical Union Conference, San Francisco, CA.
Cohen, D., T.S. Hooyer, N.R. Iverson, J.F. Thomason, M. Jackson, 2006, Effects of water pressure fluctuations on quarrying: subglacial experiments using acoustic emissions, Abstract presented at the European Geosciences Union General Assembly, Vienna, Austria.
Thomason, J.F. and N.R. Iverson, 2005, A laboratory and field study of the microstructural strain signature of a basal till, Lake Michigan Lobe, North Central GSA Minneapolis Abstracts with Programs, North Central GSA Minneapolis Abstracts with Programs, 37(5), 27.
Thomason, J.F., and D.H. Malone, 2000, Geology of the Starved Rock, IL 7.5 Minute Quadrangle: North Central GSA Indianapolis Abstracts with Programs, 32 (5), 19.
Publications
Thomason, J.F. and N.R. Iverson, 2009, Deformation of the Batestown till of the Lake Michigan lobe, Laurentide ice sheet, Journal of Glaciology, vol. 55, p.131-146.
Hooyer, T.S., N.R. Iverson, F. Lagroix, and J.F. Thomason, 2008, Magnetic fabric of sheared till: A strain indicator for evaluating the bed deformation model of glacier flow, Journal of Geophysical Research, vol. 113, FO2002, doi: 10.1029/2007JF000757.
Iverson, N.R, T.S. Hooyer, J.F. Thomason, M. Graesch, and J.R. Shumway, 2008, The experimental basis for interpreting particle and magnetic fabrics of sheared till, Earth Surface Processes and Landforms, vol. 33, p. 627-645.
Thomason, J.F. and N.R. Iverson, 2007, A laboratory study of particle ploughing and pore-pressure feedback: a velocity weakening mechanism for soft glacier beds, Journal of Glaciology, vol. 54, p. 169-181.
Thomason, J.F. and N.R. Iverson, 2006, Microfabric and microshear evolution in deformed till, Quaternary Science Reviews, 25, 1027-1038.
Cohen, D., T.S. Hooyer, N.R. Iverson, J.F. Thomason, and M. Jackson, 2006, Role of transient water pressure in quarrying: A subglacial experiment using acoustic emissions, Journal of Geophysical Research-Earth Surface, 111, F03006, doi: 10.1029/2005JF000439.
Thomason, J.F., and D.H. Malone, 2000, Surficial Geologic Map of the Starved Rock, IL 7.5 Minute Quadrangel, USGS EDMAP.
Ordering information for Illinois State Geological Survey Publications
Updated 10/10/2011 SLD