Department of Geology
Geology Faculty and Staff
Dr. Samuel Thompson, Professor and Acting Chair
Office: Tillman 312, (309) 298-1648
Ph.D. from University of Akron
Send email to S-Thompson@wiu.edu
Sara Bennett, Instructor
Office: Tillman 106, (309) 298-1905
M.S. in geology from Indiana University with experience in isotopic studies of acid mine drainage.
Send email to SC-Bennett@wiu.edu
Dr. Steve Bennett, Associate Professor
Office: Tillman 109, (309) 298-1256
Ph.D. in geology from Indiana University with emphasis on surficial processes.
Specialization in field-based physical hydrogeologic studies and stream sediment transport.
Send email to SW-Bennett1@wiu.edu
Dr. Thomas A. Hegna, Assistant Professor
Office: Tillman 113, (309) 298-1366
M.S. in Geoscience from the University of Iowa, with emphasis on invertebrate paleontology and paleoecology.
M.Phil. in Geology & Geophysics from Yale University
Ph.D in Geology & Geophysics from Yale University, with emphasis on arthropod paleobiology, phylogeny and taphonomy.
His research focuses on the evolutionary radiation and functional morphology of crustaceans, arthropod taphonomy and preservation, and relevance of fossil organisms for understanding modern diversity.
A more detailed website:
Send email to TA-Hegna@wiu.edu
Robert Johnson, Geology Museum Curator
Office: Tillman 118B (309) 298-1368
B.A. in art from Western Illinois University with concentration in commercial art, print making and Geoscience. Experience in museum work, freelance advertising, design display and construction, graphic design and illustration.
Send email to RE-Johnson2@wiu.edu
Dr. Kyle Mayborn, Professor and Interim Associate Dean, College of Arts and Sciences
Office: Tillman 108, (309) 298-1577 and Morgan Hall 118a, (309) 298-1828
Ph.D. in geology from University of California at Davis with emphasis in igneous and metamorphic petrology.
Specialization in petrologic and structural evolution of Precambrian dike swarms; basaltic magma evolution, and quantitative modeling of magmatic differentiation.
Send email to KR-Mayborn@wiu.edu
Dr. Leslie Melim, Professor
Office: Tillman 112, (309) 298-1377
Ph.D. in geology from Southern Methodist University with emphasis on carbonate diagenesis and sedimentology.
Specialization in carbonate sedimentology and diagenesis, dolomitization, sedimentary petrography, sedimentary geochemistry, low-temperature isotope geochemistry, geomicrobiology of cave formations
Send email to LA-Melim@wiu.edu
Dr. Jack Bowman Bailey, Professor Emeritus
Senior Fellow Geological Society of America
Office: Tillman 118A, (309) 298-1481
Ph.D. (1975) in geology with emphasis in paleontology from University of Illinois at Urbana-Champaign
Specializations in invertebrate and vertebrate paleobiology. Primary interest in the systematics, functional morphology, paleoecology and paleobiogeography of Paleozoic Bivalvia (Mollusca). Secondary interest in dinosaur paleobiology.
Send email to JB-Bailey@wiu.edu
Dr. Peter Calengas, Professor Emeritus
Office: Tillman 115, (309) 298-1151
Ph.D. in geology from Indiana University; serves as consultant to various groups in coal, industrial minerals and environmental geology.
Specialization in industrial minerals, coal, environmental geology.
Send email to PL-Calengas@wiu.edu