LGS Administrative Staff
Chip Groat, PhD
Groat is a nationally renowned educator and government scientist. Most recently, he retired as president and CEO from the Water Institute of the Gulf. He was professor and director of the Center for International Energy and Environmental Policy and associate director of the Energy Institute at the University of Texas at Austin. He was also director of the U.S. Geological Survey under Presidents Bill Clinton and George W. Bush.
Groat returns to LSU after many years in academia, government, independent research, and administrative positions. Groat’s prior tenure at LSU includes serving as the LGS director and state geologist (1978-1990) and as the executive director for Coastal, Energy, and Environmental Resources (1992-1995).
Marty Horn, PhD
Acting Assistant Director
Marty Horn joined the Louisiana Geological Survey as an assistant professor of research in January 2007. He had previously been employed at LSU since 2002 as an instructor in the LSU Department of Geology and Geophysics, where he also served as the field camp director.Horn earned a B.S. in Geophysics at the University of Oklahoma in 1982, an M.S. in Geology at the Arizona State University in 1986, and a Ph.D. in Mathematical Sciences & Geology at the University of Texas at Arlington in 1996. After graduation he taught courses in Mineralogy, Petrology, Volcanology, and Field Geology at UTA as an adjunct professor.While at UTA Horn also worked as a geologist for Snyder Oil Company, where he primarily focused on the Hosston and Cotton Valley trends of north Louisiana. At the LGS he has returned to full-time research on north Louisiana oil and gas reserves.
Melissa Esnault is the Office Coordinator of the LGS. She graduated from Louisiana Tech University in Ruston, Louisiana, in 2000 with a B.S. degree in Family Studies with a concentration in Early Childhood Development. Melissa joined LSU in 2007 as a Coordinator in LSU’s Office of Human Resources, where she was the assistant to the associate vice chancellor of Human Resource Management. She was previously employed as an inside sales representative by the Tembec Paper Corporation in St. Francisville, Louisiana and as an executive administrative assistant by the eFederal Credit Union in Baton Rouge. Melissa joined the LGS in 2010.
Jeanne Johnson is the Accounting Technician for the Louisiana Geological Survey and handles all LGS grants, contracts and budgets. Johnson came to work at LSU in 1991 and has worked for the Department of Oceanography and Coastal Sciences, the Coastal Studies Institute and the School of Veterinary Medicine. Jeanne assists LGS researchers in the preparation of their proposal budgets and provides the staff with their respective monthly budget summaries.
Research Associate 3
Patrick O’Neill received a B.S. degree from the LSU School of Forestry in 1985 and worked in photogrammetry before joining the LGS. Pat is in charge of LGS Publications Office as well as the LGS core and well log libraries and facilities. He has experience with GPS data collection and related field work techniques.