Jason F. Thomason, Ph. D.

207 Natural Resources Building
615 E. Peabody Drive
Champaign, IL 61820

Phone: 217-244-2508 • Fax: 217-244-2785
E-mail: thomason@isgs.illinois.edu

Research Interests

• Quaternary Geology Staff Page
• Glacial stratigraphy and sedimentology
• Laboratory and field studies of subglacial processes
• Geologic mapping of glaciated terrains

Current Projects

• Surficial mapping in Lake County, IL
• 3D mapping/modeling of glacial deposits in Lake County, IL
• Geology of Big River State Forest, IL

Selected Publications

Abstracts

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.

Hooyer, T.S., D. Cohen, N.R. Iverson, J.F. Thomason, and M. Jackson, 2005, A quarrying experiment beneath a thick valley glacier: role of transient water pressure North Central GSA Minneapolis with Programs, 37(5), 27.

Thomason, J.F. and N.R. Iverson, 2004, Clast plowing as a potential flow instability for soft-bedded glaciers, Eos Trans. AGU Fall meeting, 85(47), no. 327.

McLoughlin, M., N.R. Iverson, J.F. Thomason, and T.S. Hooyer, 2003, Determination of the microfabric of sheared till using high resolution X-Ray texture goniometry, GSA Seattle Abstracts with Programs, 35 (6), 299.

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, 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.

Hooyer, T.S., N.R. Iverson, F. Lagroiz, and J.F. Thomason, in review, Journal of Geophysical Research-Earth Surface, The development of magnetic fabric in sheared till.

Thomason, J.F. and N.R. Iverson, in review, Journal of Glaciology, A laboratory study of particle ploughing and pore-pressure feedback: A velocity weakeing machanism for soft glacier beds.

J.F. Thomason and N.R. Iverson, in preparation for submittal to Quaternary Science Reviews, Genesis of the Batestown till, Lake Michigan Lobe, from magnetic fabric and sand-particle fabric analyses.

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