Ground WAter Divide 80 F 0 5 10 MILES 0 8 16 KILOMETERS SCALE APPROXIMATE 60 100 140 180 I I I I I I TEMPERATURE 0F LEGEND SALT WATER FLOW - -IIFRESH WATER FLOW S CAVERN 3Y" FRACTURES TEMPERATURE PROFILE Figure 35. Hypothetical hydrogeologic cross section through peninsular Florida demonstrating the concept of cyclic flow of seawater induced by geothermal heating (modified from Kohout et al., 1977). 01 0) -Ji I- LU 0 500 1000 1500 2000 2500 3000 3500 4000 45050005500- OJ z 0 0)