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Todd Thompson

Director and State Geologist



(812) 855-7428


As the Director of the Indiana Geological Survey and State Geologist of Indiana, Todd Thompson serves as chief executive of the institution, providing overall leadership in fulfilling the mission in directed research, service, and education. Todd has worked at the Indiana Geological and Water Survey for more than 30 years in a number of different capacities. His areas of research have been on the architecture of ancient carbonate shoals and its relevance on recoverable dimension stone, the impact of seismicity on Wabash River drainage behavior, and the stratigraphy of middle Mississippian sediments in south-central Indiana. Most of his work, however, has been on past lake-level change in the upper Great Lakes and concomitant shoreline behavior.

Todd received his undergraduate degree from Allegheny College and his master’s and doctoral degrees from Indiana University.


clastic and carbonate sedimentology, Great Lakes lake level and shoreline behavior, Indiana Dunes, ground penetrating radar, Indiana (Salem) Limestone, Mississippian depositional systems and stratigraphy, geological education

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