Hydrology - Water Resources Report 43

Hydrostratigraphy of the Aik-2448 and Aik-2449 Core Holes in the Breezy Hill Area of Aiken County, South Carolina

Joseph A. Gellici


Hydrostratigraphic units in the updip region of the South Carolina Coastal Plain are delineated by using lithological, hydrological, and geophysical data from two continuously cored boreholes in Aiken County, S.C. Aquifers are 33 to 146 feet thick and, in ascending order, include the McQueen Branch, Crouch Branch, and Steed Pond. They consist of unconsolidated quartz-sand beds of Upper Cretaceous through Miocene age. Confining units are 13 to 34 feet thick and, in ascending order, include the informally named Gramling and the previously named McQueen Branch. They consist of silty clay beds of Upper Cretaceous age and saprolite of Paleozoic age. Hydrogeologic sections illustrate the thickness, lateral continuity, and geographic limits of the units in Aiken County. Hydrostratigraphic units are correlated with those mapped at the Savannah River Site to the south and with those mapped in Orangeburg County to the east.

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