b'Mineralogic and Textural Analysis of a Portion of the Talbotton Dike, A Mesozoic Microgabbro Dike, between Woodland and Talbotton, GAZachary A. LoftusAdviser: Dr. Mark S. GroszosThis study characterizes mineralogic and textural features of the Talbotton Dike. This will be achieved through field analysis, lab analysis, and petrographic analysis of eight samples collected from the dike. The dike is exposed along SR-41, near Woodland, Georgia. Samples were collected from road-side exposures on the highway. Additionally, a single sample was collected from the bottom of a small quarry ~100 m west of the SR-41 collection site.The samples were collected at ~10 m intervals across the width of the exposure. The dike shows typical microgabbro outcrop features such as boulder trains along the surface, thick orange weathering rinds, dark orange soils, and well-preserved exposures. The dike is estimated to be as much as 100m wide with a trend of N5W. The dip of the dike is assumed to be near-vertical. The Thomaston Dike is shown on the 1976 Geologic Map of Georgia. Based on that map, the dike is estimated to be ~39 km long. Sample collection, lab analysis, and preliminary thin section analysis has been completed. Remaining tasks include point counting, Michele-Levy analysis of feldspars, and classification of pyroxene mineralogy. Lab-based research and further sample collection is on-going. Hydrograph Analysis of Three Karst Springs in FloridaScott E. WhiteSponsor: Dr. Can DenizmanThe purpose of this project was to analyze hydrographs of three karst springs in Florida: Blue Hole, Manatee, and Blue Springs. The analysis would allow us to obtain their recession coefficient, storage capacity and the baseflow of each. To obtain these goals, we used USGS data of the mean, the minimum, and maximum of the monthly discharges over the course of 18 years. Having analyzed the data in Excel, the recession coefficients of the springs were calculated as 0.0012, 0.0009, and 0.000545 showing large reservoirs within the Eocene and Oligocene limestones of Florida. The storage capacity of the springs, which will show us how much water can be drained by gravity, was calculated to be 290.75x10^6 m^3, 236.05x10^6 m^3, and 729.76x10^6 m^3, respectively.Lastly, the discharge maximum and minimum ratio, which will show us the levels of baseflow, was calculated giving us values of 4.747912, 3.597578, and 1.484917.Based on the results, the three springs: Blue Hole, Manatee, and Blue Springs have large reservoirs to hold water and have high baseflows, since lower ratios represent higher baseflows. 50'