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The Tertiary limestone aquifer system of the southeastern United States is a thick sequence of carbonate rocks that vary in age and that are hydraulically connected in varying degrees. A map is presented that shows the thickness of the upper permeable zone of the aquifer system. Several types of geologic structures have had an effect on the thickness of the upper permeable zone. The magnitude of this effect varies with the type and size of the structure. (USGS)
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USGS Numbered Series
Thickness of the upper permeable zone of the Tertiary limestone aquifer system, southeastern United States
1 map :col. ;102 x 84 cm. folded in envelope 31 x 24 cm.