Prior to coming to Juniata College in 1997, he worked as an environmental and engineering consultant. Dr. Lehmann developed his passion for working with students as a teaching assistant at Miami University and University of Rochester and as an Adjunct Instructor at S.U.N.Y., Oswego. His geology research interests include integrated geological research that uses stratigraphy, paleontology, and sedimentology to examine controls upon the Paleozoic sedimentary and paleoecological record. Dr. Lehmann's ongoing research, examining the detailed stratigraphy and tectonic history of Upper Ordovician rocks of Pennsylvania, has been funded through the Petroleum Research Fund of the American Chemical Society and the Pennsylvania Geological Survey. He recently completed his term as Chairperson of the northeastern section of the Paleontological Society. Dr. Lehmann has authored or coauthored over 25 professional publications and presentations. For a number of these publications and presentations, undergraduate students have helped complete the research and have been co-authors.

Dr. Lehmann earned his Ph.D. in geology at the Univ. of Rochester. He has master degrees in both geology and technical writing from Miami University and completed undergraduate studies in geology and writing at Juniata College.

When not in the classroom, lab, or field, Dr. Lehmann can often be found fishing for bass, trout, or musky at many of the fine local lakes and streams. His wife, Carolyn, is also a Juniata alum, and he and his family enjoy attending Juniata sporting events.

Dr. Lehmann's office hours are listed on his current schedule (click to see schedule).