Faculty and Staff

Mitchell Clay
Laboratory Manager
Ph.D. University of Kentucky (in-progress)

Area of expertise: Geology

clayj@apsu.edu
(931) 221-1004

Adriana Ortega
Academic Assistant to the Chair
BA, University of Tennessee

Area of expertise: Political Science

ortegaac@apsu.edu
(931) 221-7454

Matt McKelvey
M.S. University of Nevada, Las Vegas

Area of expertise: Geology

McKelveym@apsu.edu

Mike Wilson
Director, APSU GIS Center

Ph.D. University of Tennessee Space Institute

Area of expertise: Spatial Analysis

wheelerr@apsu.edu

Kathrine Killebrew
M.S. Lipscomb University

Area of expertise: Geography and Sustainable Practices 

killebrewk@apsu.edu

Philip R. Kemmerly
Professor of Geology
Ed.D., P.G., Oklahoma State University

Areas of expertise: Hydrogeology, Environmental Geology, Geomorphology

kemmerlyp@apsu.edu 

Byron J. Webb
Professor of Geography
M.S. University of Memphis Associate 

Area of expertise: Geography

Dr. D.M.S. Bhatia [1939-2023]
Professor of Geology
Ph.D. University of Missouri-Rolla 

Area of expertise: Economic Geology

Dr. Robert A. Sirk [1956-2019]
Professor of Geography

Dr. Robert Sirk was Professor Geography in the Department of Geosciences (now Earth and Environmental Sciences) for 24 years from 1995 until his passing in 2019.  During his tenure at APSU he served as Chair of the Department of Geosciences from 2009 - 2013 and taught classes related to environmental management, natural hazards, climatology, and meteorology, as well as introductory geography courses. 

Dr. Kenton Wibking [1926-2018]
Professor of Geography, Emeritus

Dr. Wibking taught geography for 30 years at Austin Peay State University, much of that time as head of the department. He was a great believer in public education and in particular his own geography

Dr. James Xavier Corgan [1930-2012]
Professor of Geology, Emeritus

Dr. Corgan was a professor at APSU from 1968 to his retirement in 1991.  During his career at APSU he founded the Department of Geology and served as the Chair of the department for many years.  As a scholar he published over 300 papers and in 1982 received the Richard M. Hawkins Award for his noteworthy contributions to scholarship during his tenure at APSU.