Text OnlyLogin to PAWS Baton Rouge, Louisiana |

    Department of Geology and Geophysics



Full-Time Faculty

Jeffrey Nunn, Ernest and Alice Neal Professor

Earnest and Alice Neal Professor(Ph.D. Northwestern University, 1981)
Geodynamics, tectonics and fluid flow. Fluid flow and solute transport in the Gulf of Mexico, tectonic evolution of rift basins and tomography of fine-grained sediments

Contact Information:

Office: E339/ E235 Howe-Russell
Telephone:(225) 578-3353
Fax:(225) 578-2302

Courses Taught
  • Geology 4062 - Exploration and Environmental Geophysics
  • Geology 4182 - Physical Hydrogeology
Current Research Interests
  • Fluid Flow and Solute Transport in the Gulf of Mexico.
  • Fluid Flow and Deformation on Faults.
  • Heat Flow and Evolution of Sedimentary Basins.
  • Gravity, Flexure, and Rheology of the Lithosphere.
  • Fluid Flow and Deformation on Faults.
  • Deep Migration of Hydrocarbons by Propagating Fractures.
  • Tectonic Evolution of Rift Basins.
  • Ph.D., 1981, Northwestern University
Selected Recent Publications

Nunn, J., and Harris, N. B., Subsurface Seepage of Seawater across a Barrier: A Source of Water and Salt to Peripheral Salt Basins, Bulletin Geological Society America, 2007.

Revil, A., L. M. Cathles, S. Losh, and J. A. Nunn, Electrical Conductivity in Shaly Sands, Jour. Geophys. Res., 103, 23,925-23,936, 1998.

Nunn, J. A., Roberts, S. J., Cathles, L. M., and Anderson, R., Fluid migration in the Eugene Island Block area of offshore Louisiana, in Proceedings of Fifth Annual ARCHIE conference, the Woodlands, TX, 1995.

Sarkar, A., Nunn, J. A., and Hanor, J. S., Free thermohaline convection beneath allochthonous salt sheets: An agent for salt dissolution and fluid flow in Gulf Coast Sediments, Jour. Geophys. Res., 100, 18085-18092, 1995.

Sarkar, A., Nunn, J. A., and Hanor, J. S., Free thermohaline convection beneath allochthonous salt sheets: An agent for salt tectonics and fluid flow in Gulf Coast sediments, in Salt, Sediment and Hydrocarbons, Proceedings of sixteenth annual research conference Gulf Coast Section-SEPM, 245-252, 1995.

Evans, D. G., Nunn, J. A., and Hanor, J. S., Mechanisms driving groundwater flow near salt domes, Geophys. Res. Lett., 18, 927-930, 1991.

Evans, D. G., and Nunn, J. A., Free thermohaline convection in sediments surrounding a salt column, Jour. Geophys. Res., 94, 12,413-12,422, 1989.

Nunn, J.A., and Sassen, R., Framework of hydrocarbon generation and migration, Gulf of Mexico Continental Slope: Gulf Coast Association of Geological Societies, Transactions, 36, 257-262, 1986.

Lin, G., and J. A. Nunn, Evidence for recent migration of geopressured fluids along faults in Eugene Island, Block 330 from estimates of pore water salinity, Gulf Coast Assoc. Geol. Soc. Trans., 47, 419-424, 1997.

Nunn, J. A., Development of geopressure by ductile shear: An example from offshore Louisiana, Gulf Coast Assoc. Geol. Soc. Trans., 47, 425-434, 1997.

Roberts, S. J., Nunn, J. A., Cathles, L. M., and Cipriani, F.-D., Expulsion of abnormally pressured fluids along faults, Jour. Geophys. Res., 101, 28, 28,231-28,252, 1996.

Roberts, S., and Nunn, J. A., Episodic fluid expulsion from geopressured sediments, Marine and Petroleum Geology, 12, 195-204, 1995.

Nunn, J. A., and G. Lin, Thermal insulation by Late Paleozoic carbonaceous sediments: Implications for formation of Mississippi Valley-type ore deposits, Geofluids II, Contributions to the Second International Conference on Fluid Evolution, Migration and Interaction in Sedimentary Basins and Orogenic Belts, 201-204, 1997.

Nunn, J. A., Free convection beneath intracratonic basin: thermal and subsidence effects, Basin Research, 6, 115-130, 1994.

Deming, D. and Nunn, J. A., Numerical models of brine migration, Jour. Geophys. Res., 96, 2485-2499, 1991.

Nunn, J. A., and Deming, D., Thermal constraints on basin-scale flow systems, Geophys. Res. Lett., 18, 967-970, 1991.

Deming, D., Nunn, J. A., Jones, S., and Chapman, D. S., Some problems in thermal history studies, in Applications of Thermal Maturity Studies to Energy Exploration, RMS-SEPM, 61-80, 1990.

Deming, D., Nunn, J. A., and Evans, D. G., Thermal effects of compaction-driven groundwater flow from overthrust belts, Jour. Geophys. Res., 95, 6669-6684, 1990.

Deming, D., Hanor, J. S., and Nunn, J. A., Method of variable bias and its application to estimating subsurface temperature, Geophys. Res. Lett., 17, 1949-1952, 1990.

Nunn, J. A., Relaxation of continental lithosphere: An explanation for Late Cretaceous reactivation of the Sabine Uplift of Louisiana-Texas, Tectonics, 9, 341-359, 1990.

Nunn, J.A., and Aires, J.R., Gravity anomalies and flexure of the lithosphere at the Middle Amazon Basin: Jour. Geophys. Res., 93, 415-428, 1988.

Nunn, J. A., Czerniak, M. and Pilger, R. H., Jr., Constraints on structure of Brooks Range/Colville Basin, northern Alaska from flexure and gravity analysis: Tectonics, 6, 603-617, 1987.

Nunn, J. A., State of stress in the northern Gulf Coast: Geology, 13, 429-432, 1985.

Nunn, J. A., Buoyancy-driven propagation of isolated fluid-filled fractures: Implications for fluid transport in Gulf of Mexico geopressured sediments, Jour. Geophys. Res., 101, 2963-2970, 1996.

Travis, C. J., and Nunn, J. A., Stratigraphic architecture of extensional basins: insights from a numerical model of sedimentation in evolving half graben, Jour. Geophys. Res., 99, 15,653-15,666, 1994.


Graduate Students

Kim Syrowski
X-Ray Tomography of Fine Grained Rocks. Kim is using X-Ray tomography at beamline X27A at Brookhaven National Laboratory in conjuction with SEM and microprobe work at LSU to look at microfractures and diagenesis in fine grained rocks from the North Sea and Gulf of Mexico.

Russ Spears
Pore water salinity distribution in South Marsh Island, Gulf of Mexico. Russ is using multiple well log response (density, gamma ray, and resistivity) to estimate the salinity of pore waters. He will use this information to determine the distribution of fluid compartments and fluid pathways in the South Marsh Island region. Digital well data and seismic data donated by Texaco.

Post-Doctoral Student

Martin Appold
Primary Migration of Hydrocarbons by Solitary Waves. Martin is conducting a numerical study of fluid migration in geopressured sediments of the Gulf of Mexico. Solitary waves are regions of enhanced porosity that move upwards through the sediment column.