Brandywine Formation (SCTb;1)

Brandywine Formation: Upland gravel similar to Columbia group mapped in the uplands of southern Maryland southeast of DC. 10-40 ft thick. Extensive sand and gravel resources.

State	South Carolina
Name	Brandywine Formation
Geologic age	Miocene
Original map label	Tb
Primary rock type	gravel
Secondary rock type	sand
Other rock types
Lithologic constituents	Major Unconsolidated > Coarse-detrital > Sand Unconsolidated > Coarse-detrital > Gravel
Map references	Newell, Wayne L., Prowell, David (retired), Krantz, David, Powars, David, Mixon, Robert (retired), Stone, Byron, and Willard, Debra, in review, Surficial Geology and Geomorphology of the Atlantic Coastal Plain: U.S.G.S. Open File Report,
Unit references	Newell, Wayne L., Prowell, David (retired), Krantz, David, Powars, David, Mixon, Robert (retired), Stone, Byron, and Willard, Debra, in review, Surficial Geology and Geomorphology of the Atlantic Coastal Plain: U.S.G.S. Open File Report,
Geographic coverage	Chesterfield