TABLE 2. SUMMARY OF TIlE PROPERTIES OF THE GEOLOGIC FORMATIONS PENETRATED BY WATER WELLS IN ORANGE COUNTY, FLORIDA
Thickness,
Formation in Description of Water-bearing
Series name feet material properties Aquifer Water level
UndifferRecent and entiated,
may in- Mostly quartz sand Varies widely in 0 to 20 feet below Pleistocene elude 0-200 with varying quantity and qual- Non-artesian the land surface Caloosa- amounts of clay and ity of water pro- but generally less o hatchee shell. duced. than 10 feet. Pliocene(?) Marl
Piezometric surGray-green, clayey, Shallow arte- face not defined, quartz sand and silt; Generally imper- sian, lower water level gen- o phosphatic sand n ; meable except for limestone beds erally is lower Miocene Hawthorn 0-200 and bu.T, impure, limestone, shell, may be part of than nonartesian phosphatic limestone, or gravel beds. Floridan aqui- aquifer and higher mostly in lower part. fer. than Floridan aquifer. o
Cream to tan, fine, Moderately high soft to medium hard, transmissibility, Ocala 0-125 granular, porous, most wells also Group sometimes dolomitic penetrate underlimestone. lying formations.