Cedar Keys/Lawson, Central Florida Region (10)

Comments on Geologic Parameters

10 Fluid Residence Time:

There are essentially no data on ground-water flow rates and directions in the lower Cedar Keys and upper Lawson Dolomites. However, Meyers (1989, his fig. 13) showed that ground water in the lower Floridan aquifer are 10,000 yr old. In all probability the ground waters in the underlying lower Cedar Keys and upper Lawson Dolomites are significantly older. Therefore, we assign a date of more than 20,000 yr for fluid residence time in the lower Cedar Keys and upper Lawson Dolomites of southern Florida.

10 Reference:

Meyer, F. W., 1989, Hydrogeology, ground-water movement, and subsurface storage in the Floridan Aquifer system in southern Florida: U.S. Geological Survey, Professional Paper 1403-G, 59 p.


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