Louisiana Geological Survey Staff


The administrative personnel of the LGS consist of Acting Director Dr. Charles G. Groat, Associate Director Chacko John, Acting Assistant Director Dr. Marty Horn, and their support staff.

Name Title Email Telephone
Dr. Charles G. Groat Acting Director & Professor cgroat@lsu.edu 225-578-5320
Dr. Chacko J. John Professor Emeritus cjohn@lsu.edu 225-578-8681
Dr. Marty Horn Assistant Director mhorn@lsu.edu 225-578-2681
Melissa Esnault Administrative Coordinator mesnau1@lsu.edu 225-578-5320
Jeanne Johnson Accounting Technician jeannej@lsu.edu 225-578-8407
Patrick O’Neill Publication Sales and Research Center, Research Associate poneil2@lsu.edu  225-578-8590

Basin Research/Energy

The Basin Research Energy Section is the oil, gas, and coal research section of the LGS, and it performs research into the nature and occurrence of oil, gas, and coal both in Louisiana and around the world. The BRES disseminates its research and technical information widely, especially to the independent oil and gas producers of Louisiana, thereby enabling more economically efficient exploration and production operations. The Basin Research Energy Section was formerly the LSU Basin Research Institute, which was established in 1984 and which was merged into the Louisiana Geological Survey in 2000.

Name Title Email Telephone

Dr. Chacko J. John

Professor Emeritus cjohn@lsu.edu 225-578-8681
Reed Bourgeois Computer Analyst 3 rbourg9@lsu.edu 225-578-8879


The Cartographic Section of the LGS prepares maps and geographic information systems (GIS) data for LGS and other LSU research departments. It also produces map products under direct contract from other government agencies, traditional printed maps and GIS products, and technical illustrations for scientific publications/presentations utilizing graphic design and image processing software. The cartographic staff works closely with technical editors in the preparation of scientific publications ranging from simple reports to complex books and atlases utilizing the latest electronic publishing and pre-press software.

Name Title Email Telephone
Lisa Pond Research Associate 4 lgpond@lsu.edu 225-578-0401
Robert Paulsell Research Associate 4 rpaulsell@lsu.edu 225-578-8655
R. Hampton Peele Research Associate 4 hampton@lsu.edu 225-578-3455


Geologic Mapping & Mineral Resources

The Geologic Mapping and Mineral Resources Section of the LGS conducts investigations of the surface geology of Louisiana and renders the results in map format at intermediate and large scales (1:100,000 and 1:24,000, respectively). These investigations are done in cooperation with the U.S. Geological Survey under the STATEMAP component of the National Cooperative Geologic Mapping Program (NCGMP). Although these investigations do not focus specifically on mineral resources, the geologic maps generated can have value for minerals exploration and resource assessment via derivative uses (the identification of economically significant properties associated with the units depicted on geologic maps).

The Louisiana Geological Survey is the only research organization doing geologic mapping in the state of Louisiana.  The continuing mapping effort is supported by cooperative agreements with the U.S. Geological Survey (USGS) under the STATEMAP component of the National Cooperative Geologic Mapping Program approved by the U.S. Congress.

Name Title Email Telephone
Richard McCulloh Research Associate 5 mccullo@lsu.edu 225-578-5327
Paul Heinrich Research Associate 4 heinric@lsu.edu 225-578-4398


Geologic Review

Geologic Review is an ongoing program created by the Louisiana Geological Survey in 1982 which provides regulatory technical assistance to the Coastal Management Division (CMD) of the Louisiana Department of Natural Resources and to three districts of the U.S. Army Corps of Engineers (USACE).

John E. Johnston, III Geologic Review, (retired-part time) hammer@lsu.edu 225-578-8657


The Geophysical Section of LGS focuses on the physical processes and properties of the earth. Using quantitative methods, these processes and properties can be analyzed to measure gravity, magnetism, locate potential petroleum reservoirs and other mineral deposits, as well as archaeological sites among other interdisciplinary phenomena.

Name Title Email Telephone
Dr. Marty Horn Acting Assistant Director, Instructor mhorn@lsu.edu 225-578-2681

Water & Environment

The mission of the water and environmental section is to gain a better understanding of the hydrologic systems of Louisiana, particularly through increased knowledge of the properties of the state’s aquifers. Besides research into Louisiana aquifers – especially how they interact with each other and with the state’s rivers, lakes, and wetlands – research is also performed into water quality and how natural and man made pollutants are distributed and move within the aquifers, as well as interactions with surface water bodies. The results of this research into the state’s hydrologic systems allows the LGS to provide effective technical assistance/support to various stakeholders of Louisiana water resources, thus aiding in Louisiana’s management of this valuable resource.

Name Title Email Telephone
Dr. Douglas Carlson Assistant Professor- Research dcarlson@lsu.edu 225-578-3671
Riley Milner Research Associate 3 lmilne1@lsu.edu 225-578-3410