Description: This map from the U. S. Geological Survey Professional Paper 1403-1 shows the concentrations of dissolved silica in water samples from selected wells in the Upper Floridan aquifer, current to 1989. The A-A' is the line of wells along the flow path. The dots are wells and the number represents dissolved silica concentration in millimoles per kilogram of water. Source: Craig L. Sprinkle, USGS Professional Paper 1403-1 (Washington, : U. S. Government Printing Office, 1989) 164 Map Credit: Courtesy the University of South Florida Library |
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