The state of South Carolina is covered mostly by Coastal Plain sediments washed from the Appalachian mountain range over the past few hundred million years.  The Blue Ridge to the west is the highest part of South Carolina, followed by the Piedmont, and then the Coastal Plain.  In the image above, the surficial deposits of the Coastal Plain are in color.  Separated by the Fall Zone, the other older rocks of South Carolina are in plain white.  This dataset comes from the South Carolina Department of Natural Resources Division of Geology.  The map was created by Dr. Harris.  Please This email address is being protected from spambots. You need JavaScript enabled to view to obtain a map without the watermark.